UNGER MARKETING INTERNATIONAL, LLC

Organization

  • BRIDGEPORT, CT, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Tool handles having stationary and rotational portions

    • Patent number 11,926,032
    • Issue date Mar 12, 2024
    • Unger Marketing International, L.L.C.
    • William Harrington
    • B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
  • Information Patent Grant

    Fluid purification device

    • Patent number 11,911,720
    • Issue date Feb 27, 2024
    • Unger Marketing International, L.L.C.
    • Paul H. Adams
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Floor cleaning system

    • Patent number D1015668
    • Issue date Feb 20, 2024
    • Unger Marketing International, L.L.C.
    • William Harrington
    • D32 - Washing, cleaning, or drying machine
  • Information Patent Grant

    Floor cleaning system

    • Patent number 11,896,180
    • Issue date Feb 13, 2024
    • Unger Marketing International, L.L.C.
    • Robert F. Smith
    • A46 - BRUSHWARE
  • Information Patent Grant

    Pole connection for a window cleaning tool

    • Patent number D1008582
    • Issue date Dec 19, 2023
    • Unger Marketing International, L.L.C.
    • William Harrington
    • D32 - Washing, cleaning, or drying machine
  • Information Patent Grant

    Pole connection for a window cleaning tool

    • Patent number D1007793
    • Issue date Dec 12, 2023
    • Unger Marketing International, L.L.C.
    • William Harrington
    • D32 - Washing, cleaning, or drying machine
  • Information Patent Grant

    Fluid purification device

    • Patent number 11,806,647
    • Issue date Nov 7, 2023
    • Unger Marketing International, L.L.C.
    • Stephen P. Huda
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • Information Patent Grant

    Dual ended handle for an implement

    • Patent number 11,772,256
    • Issue date Oct 3, 2023
    • Unger Marketing International, L.L.C.
    • James M. Buckley
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Floor cleaning system

    • Patent number 11,759,085
    • Issue date Sep 19, 2023
    • Unger Marketing International, L.L.C.
    • William Harrington
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Grant

    Hard surface cleaning and conditioning assemblies

    • Patent number 11,759,084
    • Issue date Sep 19, 2023
    • Unger Marketing International, L.L.C.
    • William Harrington
    • B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
  • Information Patent Grant

    Telescopic pole for a cleaning implement

    • Patent number 11,698,092
    • Issue date Jul 11, 2023
    • Unger Marketing International
    • James M. Buckley
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Grabber tool

    • Patent number D986017
    • Issue date May 16, 2023
    • Unger Marketing International
    • Robert F. Smith
    • D08 - Tools and hardware
  • Information Patent Grant

    Foldible reaching and grasping tool

    • Patent number 11,618,154
    • Issue date Apr 4, 2023
    • Unger Marketing International, L.L.C.
    • Robert F. Smith
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Clamp for an extendable pole

    • Patent number D981222
    • Issue date Mar 21, 2023
    • Unger Marketing International, L.L.C.
    • William Harrington
    • D08 - Tools and hardware
  • Information Patent Grant

    Multi-orientation cleaning device

    • Patent number 11,589,725
    • Issue date Feb 28, 2023
    • Unger Marketing International, L.L.C.
    • Joseph K. Patterson
    • B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
  • Information Patent Grant

    Flat headed mop

    • Patent number 11,576,550
    • Issue date Feb 14, 2023
    • Unger Marketing International, L.L.C.
    • Stephen P. Huda
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Pole connection for a window cleaning tool

    • Patent number D976506
    • Issue date Jan 24, 2023
    • Unger Marketing International, L.L.C.
    • William Harrington
    • D32 - Washing, cleaning, or drying machine
  • Information Patent Grant

    Media purification devices having intergral flow controllers

    • Patent number 11,535,530
    • Issue date Dec 27, 2022
    • Unger Marketing International, L.L.C.
    • Robert Camp
    • B08 - CLEANING
  • Information Patent Grant

    Extendable window cleaning tool

    • Patent number D973989
    • Issue date Dec 27, 2022
    • Unger Marketing International, L.L.C.
    • William Harrington
    • D32 - Washing, cleaning, or drying machine
  • Information Patent Grant

    Cleaning devices for cleaning of difficult to reach locations

    • Patent number 11,458,515
    • Issue date Oct 4, 2022
    • Unger Marketing International, L.L.C.
    • William Harrington
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Bucket for floor cleaning

    • Patent number D962575
    • Issue date Aug 30, 2022
    • Unger Marketing International, L.L.C.
    • William Harrington
    • D32 - Washing, cleaning, or drying machine
  • Information Patent Grant

    Water purification media device

    • Patent number D958928
    • Issue date Jul 26, 2022
    • Unger Marketing International, L.L.C.
    • Joseph K. Patterson
    • D23 - Environmental heating and cooling
  • Information Patent Grant

    Water conditioning systems

    • Patent number 11,369,923
    • Issue date Jun 28, 2022
    • Unger Marketing International, L.L.C.
    • Paul H. Adams
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • Information Patent Grant

    Bucket for floor cleaning

    • Patent number D955075
    • Issue date Jun 14, 2022
    • Unger Marketing International, L.L.C.
    • William Harrington
    • D32 - Washing, cleaning, or drying machine
  • Information Patent Grant

    Ice scraper

    • Patent number D950179
    • Issue date Apr 26, 2022
    • Unger Marketing International, L.L.C.
    • James M. Buckley
    • D32 - Washing, cleaning, or drying machine
  • Information Patent Grant

    Tool connector

    • Patent number D943407
    • Issue date Feb 15, 2022
    • Unger Marketing International, L.L.C.
    • James M. Buckley
    • D08 - Tools and hardware
  • Information Patent Grant

    Cartridge brush

    • Patent number D942154
    • Issue date Feb 1, 2022
    • Unger Marketing International, L.L.C.
    • William Harrington
    • D04 - Brushware
  • Information Patent Grant

    Plunger

    • Patent number D942717
    • Issue date Feb 1, 2022
    • Unger Marketing International, L.L.C.
    • James M. Buckley
    • D32 - Washing, cleaning, or drying machine
  • Information Patent Grant

    Dual ended handle for an implement

    • Patent number 11,213,940
    • Issue date Jan 4, 2022
    • Unger Marketing International, L.L.C.
    • James M. Buckley
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Brush handle

    • Patent number D939801
    • Issue date Dec 28, 2021
    • Unger Marketing International, L.L.C.
    • William Harrington
    • D32 - Washing, cleaning, or drying machine

Patents Applicationslast 30 patents

  • Information Patent Application

    FLOOR CLEANING SYSTEM

    • Publication number 20240148217
    • Publication date May 9, 2024
    • Unger Marketing International, LLC
    • Robert F. Smith
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Application

    FLUID PURIFICATION DEVICE

    • Publication number 20240123379
    • Publication date Apr 18, 2024
    • Unger Marketing International, LLC
    • Paul H. Adams
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • Information Patent Application

    CLEANING TOOL ACCESSORY ATTACHMENT FOR CLEANING TOOLS

    • Publication number 20240032742
    • Publication date Feb 1, 2024
    • Unger Marketing International, LLC
    • William Harrington
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Application

    HARD SURFACE CLEANING AND CONDITIONING ASSEMBLIES

    • Publication number 20240032767
    • Publication date Feb 1, 2024
    • Unger Marketing International, LLC
    • William Harrington
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Application

    FLOOR CLEANING SYSTEM

    • Publication number 20230404353
    • Publication date Dec 21, 2023
    • Unger Marketing International, LLC
    • William Harrington
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Application

    FOLDIBLE REACHING AND GRASPING TOOL

    • Publication number 20230234213
    • Publication date Jul 27, 2023
    • Unger Marketing International
    • Robert F. Smith
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    FOLDIBLE REACHING AND GRASPING TOOL

    • Publication number 20230114133
    • Publication date Apr 13, 2023
    • Unger Marketing International, LLC
    • Robert F. Smith
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    FLAT HEADED MOP AND METHOD OF OPERATION

    • Publication number 20230077150
    • Publication date Mar 9, 2023
    • Unger Marketing International, LLC
    • Stephen P. Huda
    • A46 - BRUSHWARE
  • Information Patent Application

    MULTI-ORIENTATION CLEANING DEVICE

    • Publication number 20230020360
    • Publication date Jan 19, 2023
    • Unger Marketing International, LLC
    • Joseph K. Patterson
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    MULTI-ORIENTATION CLEANING DEVICE

    • Publication number 20230015333
    • Publication date Jan 19, 2023
    • Unger Marketing International, LLC
    • Joseph K. Patterson
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    CLEANING DEVICES FOR CLEANING OF DIFFICULT TO REACH LOCATIONS

    • Publication number 20220410224
    • Publication date Dec 29, 2022
    • Unger Marketing International, LLC
    • William Harrington
    • B08 - CLEANING
  • Information Patent Application

    PLUNGERS, TOILET BRUSHES, AND CADDY ASSEMBILES

    • Publication number 20220307250
    • Publication date Sep 29, 2022
    • Unger Marketing International, LLC
    • James Buckley
    • E03 - WATER SUPPLY SEWERAGE
  • Information Patent Application

    WATER CONDITIONING SYSTEMS

    • Publication number 20220280898
    • Publication date Sep 8, 2022
    • Unger Marketing International, LLC
    • Paul H. Adams
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Application

    EXTENDABLE CLEANING TOOL

    • Publication number 20220184795
    • Publication date Jun 16, 2022
    • Unger Marketing International, LLC
    • William Harrington
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    FLUID PURIFICATION DEVICE

    • Publication number 20220062805
    • Publication date Mar 3, 2022
    • Unger Marketing International, LLC
    • Stephen P. Huda
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • Information Patent Application

    DUAL ENDED HANDLE FOR AN IMPLEMENT

    • Publication number 20220055201
    • Publication date Feb 24, 2022
    • Unger Marketing International, LLC
    • James M. Buckley
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    WATER CONDITIONING SYSTEMS HAVING DIVERSION DEVICES

    • Publication number 20220040640
    • Publication date Feb 10, 2022
    • Unger Marketing International, LLC
    • Kai Hirsch
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • Information Patent Application

    TOOL HANDLES HAVING STATIONARY AND ROTATIONAL PORTIONS

    • Publication number 20220001528
    • Publication date Jan 6, 2022
    • Unger Marketing International, LLC
    • William Harrington
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Application

    TOOL HANDLES HAVING STATIONARY AND ROTATIONAL PORTIONS

    • Publication number 20220001529
    • Publication date Jan 6, 2022
    • Unger Marketing International, LLC
    • William Harrington
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Application

    TELESCOPIC POLE FOR A CLEANING IMPLEMENT

    • Publication number 20210396257
    • Publication date Dec 23, 2021
    • Unger Marketing International, LLC
    • James M. Buckley
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    FOLDIBLE REACHING AND GRASPING TOOL

    • Publication number 20210245361
    • Publication date Aug 12, 2021
    • Unger Marketing International, LLC
    • Robert F. Smith
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    HARD SURFACE CLEANING AND CONDITIONING ASSEMBLIES

    • Publication number 20210228052
    • Publication date Jul 29, 2021
    • Unger Marketing International, LLC
    • William Harrington
    • B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
  • Information Patent Application

    CLEANING DEVICES HAVING SELECTIVELY FLEXIBLE OR RIGID HANDLES

    • Publication number 20210227961
    • Publication date Jul 29, 2021
    • Unger Marketing International, LLC
    • William Harrington
    • Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Information Patent Application

    FLOOR CLEANING SYSTEM, FLAT HEADED MOP AND MOP PAD

    • Publication number 20210177229
    • Publication date Jun 17, 2021
    • Unger Marketing International, LLC
    • Robert F. Smith
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Application

    MULTI-ORIENTATION CLEANING DEVICE

    • Publication number 20210153711
    • Publication date May 27, 2021
    • Unger Marketing International, LLC
    • Joseph K. Patterson
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Application

    ERGONOMIC POLE AND MODULAR HEAD CLEANING IMPLEMENT

    • Publication number 20210100344
    • Publication date Apr 8, 2021
    • Unger Marketing International, LLC
    • James M. Buckley
    • A46 - BRUSHWARE
  • Information Patent Application

    WATER CONDITIONING SYSTEMS

    • Publication number 20210047222
    • Publication date Feb 18, 2021
    • Unger Marketing International, LLC
    • William Harrington
    • B08 - CLEANING
  • Information Patent Application

    MEDIA PURIFICATION DEVICES HAVING INTERGRAL FLOW CONTROLLERS

    • Publication number 20210024380
    • Publication date Jan 28, 2021
    • Unger Marketing International, LLC
    • Robert Camp
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • Information Patent Application

    CLEANING DEVICES HAVING FEEDBACK BETWEEN DIFFERENT CLEANING STATES

    • Publication number 20210015246
    • Publication date Jan 21, 2021
    • Unger Marketing International, LLC
    • William Harrington
    • A46 - BRUSHWARE
  • Information Patent Application

    WATER CONDITIONING SYSTEMS

    • Publication number 20200384413
    • Publication date Dec 10, 2020
    • Unger Marketing International, LLC
    • Paul H. Adams
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

Trademarklast 30 trademarks

  • Information Trademark

    98271899 - EZ CHANGE

    • Serial number 98271899
    • Filing date Nov 15, 2023
    • Unger Marketing International, LLC
    • 8 - Hand tools and implements (hand-operated)
  • Information Trademark

    98034466 - EZ CHANGE

    • Serial number 98034466
    • Filing date Jun 8, 2023
    • Unger Marketing International, LLC
    • 8 - Hand tools and implements (hand-operated)
  • Information Trademark

    97842936 - NLITE POWERPAD

    • Serial number 97842936
    • Filing date Mar 16, 2023
    • Unger Marketing International, LLC
    • 21 - Household or kitchen utensils and containers
  • Information Trademark

    97798061 - UNGER PROFLEX

    • Serial number 97798061
    • Registration number 7331608
    • Filing date Feb 16, 2023
    • Unger Marketing International, LLC
    • 21 - Household or kitchen utensils and containers
  • Information Trademark

    97771167 - RUGGED REACHER

    • Serial number 97771167
    • Filing date Jan 27, 2023
    • Unger Marketing International, LLC
    • 8 - Hand tools and implements (hand-operated)
  • Information Trademark

    88669414 - CONNECT & CLEAN

    • Serial number 88669414
    • Registration number 6068207
    • Filing date Oct 25, 2019
    • Unger Marketing International, LLC
    • 8 - Hand tools and implements (hand-operated)
  • Information Trademark

    88418371 - LOCK-ON

    • Serial number 88418371
    • Registration number 6148620
    • Filing date May 7, 2019
    • Unger Marketing International, LLC
    • 21 - Household or kitchen utensils and containers
  • Information Trademark

    88418383 - LOCK-ON

    • Serial number 88418383
    • Registration number 6719283
    • Filing date May 7, 2019
    • Unger Marketing International, LLC
    • 21 - Household or kitchen utensils and containers
  • Information Trademark

    87722112

    • Serial number 87722112
    • Filing date Dec 15, 2017
    • Unger Marketing International, LLC
    • 21 - Household or kitchen utensils and containers
  • Information Trademark

    87710649 - UNGER PROFESSIONAL

    • Serial number 87710649
    • Registration number 5573695
    • Filing date Dec 6, 2017
    • Unger Marketing International, LLC
    • 3 - Bleaching preparations and other substances for laundry use
  • Information Trademark

    87710620 - UNGER PROFESSIONAL

    • Serial number 87710620
    • Registration number 5549348
    • Filing date Dec 6, 2017
    • Unger Marketing International, LLC
    • 3 - Bleaching preparations and other substances for laundry use
  • Information Trademark

    87676853 - UNGER EXCELLA

    • Serial number 87676853
    • Registration number 5657322
    • Filing date Nov 8, 2017
    • Unger Marketing International, LLC
    • 21 - Household or kitchen utensils and containers
  • Information Trademark

    87643738

    • Serial number 87643738
    • Filing date Oct 12, 2017
    • Unger Marketing International, LLC
    • 8 - Hand tools and implements (hand-operated)
  • Information Trademark

    87643752

    • Serial number 87643752
    • Filing date Oct 12, 2017
    • Unger Marketing International, LLC
    • 8 - Hand tools and implements (hand-operated)
  • Information Trademark

    87640283 - RINSE 'N' GO

    • Serial number 87640283
    • Registration number 5776376
    • Filing date Oct 10, 2017
    • Unger Marketing International, LLC
    • 11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
  • Information Trademark

    87610960 - UNGER CLEANXPRESS

    • Serial number 87610960
    • Registration number 5687036
    • Filing date Sep 16, 2017
    • Unger Marketing International, LLC
    • 21 - Household or kitchen utensils and containers
  • Information Trademark

    87475297 - SANIGO

    • Serial number 87475297
    • Filing date Jun 5, 2017
    • Unger Marketing International, LLC
    • 3 - Bleaching preparations and other substances for laundry use
  • Information Trademark

    87442298 - RESTROOMRX

    • Serial number 87442298
    • Registration number 5410960
    • Filing date May 9, 2017
    • Unger Marketing International, LLC
    • 12 - Vehicles
  • Information Trademark

    87305984 - UNGER WINDOWIZARD

    • Serial number 87305984
    • Filing date Jan 18, 2017
    • Unger Marketing International, LLC
    • 21 - Household or kitchen utensils and containers
  • Information Trademark

    87002954 - HYDROPOWER

    • Serial number 87002954
    • Registration number 5086526
    • Filing date Apr 15, 2016
    • Unger Marketing International, LLC
    • 11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
  • Information Trademark

    86832016 - STINGRAY

    • Serial number 86832016
    • Registration number 5172497
    • Filing date Nov 25, 2015
    • Unger Marketing International, LLC
    • 21 - Household or kitchen utensils and containers
  • Information Trademark

    86832023 - STINGRAY

    • Serial number 86832023
    • Registration number 5172498
    • Filing date Nov 25, 2015
    • Unger Marketing International, LLC
    • 21 - Household or kitchen utensils and containers
  • Information Trademark

    86652987 - THE AUTHORITY IN CLEAN

    • Serial number 86652987
    • Filing date Jun 5, 2015
    • Unger Marketing International, LLC
    • 8 - Hand tools and implements (hand-operated)
  • Information Trademark

    86468922 - UNGER ULTIMATE ...THE AUTHORITY IN CLEAN.

    • Serial number 86468922
    • Filing date Dec 2, 2014
    • Unger Marketing International, LLC
    • 8 - Hand tools and implements (hand-operated)
  • Information Trademark

    86468909 - UNGER ULTIMATE

    • Serial number 86468909
    • Filing date Dec 2, 2014
    • Unger Marketing International, LLC
    • 8 - Hand tools and implements (hand-operated)
  • Information Trademark

    86328353 - RESTROOMRX

    • Serial number 86328353
    • Registration number 5100786
    • Filing date Jul 3, 2014
    • Unger Marketing International, LLC
    • 12 - Vehicles
  • Information Trademark

    86327088 - SCRUB-ZONE

    • Serial number 86327088
    • Filing date Jul 2, 2014
    • Unger Marketing International, LLC
    • 21 - Household or kitchen utensils and containers
  • Information Trademark

    86327096 - NLITE

    • Serial number 86327096
    • Registration number 4819207
    • Filing date Jul 2, 2014
    • Unger Marketing International, LLC
    • 11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
  • Information Trademark

    86274572 - HYDRO POWER

    • Serial number 86274572
    • Registration number 4875161
    • Filing date May 7, 2014
    • Unger Marketing International, LLC
    • 11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
  • Information Trademark

    86125136 - NLITE

    • Serial number 86125136
    • Registration number 4662089
    • Filing date Nov 21, 2013
    • Unger Marketing International, LLC
    • 21 - Household or kitchen utensils and containers