Hardness

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CPC
C02F2209/055

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CCHEMISTRY METALLURGY C02Water treatment C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE C02F2209/00Controlling or monitoring parameters in water treatment

Current Industry

C02F2209/055Hardness

Industries

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Patents Grantslast 30 patents

Information Patent Grant
Systems and methods for online control of a chemical treatment solu...
- Patent number 12,358,820
- Issue date Jul 15, 2025
- ChemTreat, Inc.
- Kevin Boudreaux
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Method for operating a pasteurization apparatus
- Patent number 12,185,745
- Issue date Jan 7, 2025
- Red Bull GmbH
- Roland Concin
- A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
Information Patent Grant
System and method of deionization of water
- Patent number 12,145,868
- Issue date Nov 19, 2024
- Evoqua Water Technologies LLC
- Erich G. Hoefferle
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Method and apparatus for treating natural gas and oil well waste wa...
- Patent number 12,110,245
- Issue date Oct 8, 2024
- Eau Midstream, Inc.
- Francis C. Miller
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Systems and techniques for cleaning pressure membrane systems using...
- Patent number 12,097,467
- Issue date Sep 24, 2024
- Ecolab USA Inc.
- Seong-Hoon Yoon
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Systems and methods for the removal of minerals from conductive pro...
- Patent number 12,098,084
- Issue date Sep 24, 2024
- Dynamic Water Technologies Global, LLC
- Melvin Mathew
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Intelligent solar powered pool skimming robot
- Patent number 12,032,376
- Issue date Jul 9, 2024
- Skimdevil Pure, LLC
- Milan Simik
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Apparatus and method for treating an aqueous liquid
- Patent number 12,024,453
- Issue date Jul 2, 2024
- Brita SE
- Simon Floren
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Cooling pond water treatment system
- Patent number 12,012,347
- Issue date Jun 18, 2024
- Evoqua Water Technologies LLC
- Carol Jones
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Longitudinal in-situ impedance and resin monitoring sensor, and met...
- Patent number 11,981,583
- Issue date May 14, 2024
- Ecowater Systems LLC
- George Dimotsis
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Apparatus for measuring water hardness using ion selective electrode
- Patent number 11,953,487
- Issue date Apr 9, 2024
- Ecowater Systems LLC
- Malcolm Kahn
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Water heater with hardness detection system
- Patent number 11,953,210
- Issue date Apr 9, 2024
- Rheem Manufacturing Company
- Troy Trant
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Process of making alkaline and acidic water
- Patent number 11,926,541
- Issue date Mar 12, 2024
- G WATER LLC
- Dean D. Weston
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Methods for predicting and monitoring scale formation in industrial...
- Patent number 11,919,784
- Issue date Mar 5, 2024
- ChemTreat, Inc.
- Rajendra Prasad Kalakodimi
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Water filtration system with waste water treatment
- Patent number 11,866,350
- Issue date Jan 9, 2024
- APHINITY, INC.
- Christopher J. Bellizi
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Process for treating frac flowback and produced water including nat...
- Patent number 11,834,358
- Issue date Dec 5, 2023
- Veolia Water Solutions & Technologies Support
- Kashi Banerjee
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Methods for online control of a chemical treatment solution using s...
- Patent number 11,780,742
- Issue date Oct 10, 2023
- ChemTreat, Inc.
- Kevin Boudreaux
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Spa/pool water treatment system and method
- Patent number 11,772,986
- Issue date Oct 3, 2023
- Digital Concepts of Missouri, Inc.
- Paul Decker
- E04 - BUILDING
Information Patent Grant
Longitudinal in-situ impedance and resin monitoring sensor, and met...
- Patent number 11,667,542
- Issue date Jun 6, 2023
- Ecowater Systems LLC
- George Dimotsis
- G01 - MEASURING TESTING
Information Patent Grant
Cooling pond water treatment system
- Patent number 11,565,959
- Issue date Jan 31, 2023
- Evoqua Water Technologies LLC
- Carol Jones
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
System and method of deionization of water
- Patent number 11,447,404
- Issue date Sep 20, 2022
- Evoqua Water Technologies LLC
- Erich G. Hoefferle
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Apparatus for inhibiting formation of calcium based crystal and app...
- Patent number 11,440,824
- Issue date Sep 13, 2022
- Korea Institute of Science and Technology
- Hye-won Kim
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Method for increasing the magnesium ion concentration in feed water
- Patent number 11,390,542
- Issue date Jul 19, 2022
- Omya International AG
- Nicholas Charles Nelson
- A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
Information Patent Grant
Apparatus for measuring water hardness using ion selective electrode
- Patent number 11,391,713
- Issue date Jul 19, 2022
- Ecowater Systems LLC
- Malcolm Kahn
- G01 - MEASURING TESTING
Information Patent Grant
Water softening device and method of operating a water softening de...
- Patent number 11,278,880
- Issue date Mar 22, 2022
- BWT Aktiengesellschaft
- Pierre Balidas
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Water heater with hardness detection system
- Patent number 11,231,182
- Issue date Jan 25, 2022
- Rheem Manufacturing Company
- Troy Trant
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Method of initiating a liquid treatment process in a liquid treatme...
- Patent number 11,215,599
- Issue date Jan 4, 2022
- Harvey Water Softeners Limited
- Harvey Bowden
- G01 - MEASURING TESTING
Information Patent Grant
Method for determining hardness concentration using a monovalent io...
- Patent number 11,209,413
- Issue date Dec 28, 2021
- Ecowater Systems LLC
- Malcolm Kahn
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Dishmachine
- Patent number 11,191,419
- Issue date Dec 7, 2021
- Ecolab USA Inc.
- Jeffrey P. Ellingson
- F28 - HEAT EXCHANGE IN GENERAL
Information Patent Grant
Laundry washing machine with water softening system and method for...
- Patent number 11,180,887
- Issue date Nov 23, 2021
- Electrolux Appliances Aktiebolag
- Elisa Stabon
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...

Patents Applicationslast 30 patents

Information Patent Application
WATER-SOFTENING DEVICE
- Publication number 20250230068
- Publication date Jul 17, 2025
- Panasonic Intellectual Property Management Co., Ltd.
- Yujun LU
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
INTELLIGENT DOSING CONTROL METHOD, DEVICE AND SYSTEM FOR SOFTENING...
- Publication number 20250223203
- Publication date Jul 10, 2025
- BEIJING XINYUAN SMART WATER GROUP CO., LTD
- Hong WANG
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
SYSTEMS AND METHODS FOR RESIN BREAKTHROUGH IDENTIFICATION USING ION...
- Publication number 20250214870
- Publication date Jul 3, 2025
- PENTAIR, INC.
- Prerna Bansal
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
METHOD FOR OPERATING DEIONIZED WATER PRODUCTION SYSTEM AND DEIONIZE...
- Publication number 20250187952
- Publication date Jun 12, 2025
- ORGANO CORPORATION
- Keisuke SASAKI
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
SYSTEM AND METHOD FOR REDUCING WASTEWATER HARDNESS AND CARBON CAPTU...
- Publication number 20250178940
- Publication date Jun 5, 2025
- MEGA UNION TECHNOLOGY INCORPORATED
- KUO-CHING LIN
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
METHOD AND APPARATUS FOR ADJUSTING HARDNESS OF OUTFLOW WATER FROM W...
- Publication number 20250103070
- Publication date Mar 27, 2025
- FOSHAN MIDEA CHUNGHO WATER PURIFICATION EQUIPMENT CO., LTD.
- Zhipeng HAO
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
METHOD AND APPARATUS FOR DETERMINING HARDNESS OF RAW WATER OF WATER...
- Publication number 20250085267
- Publication date Mar 13, 2025
- FOSHAN MIDEA CHUNGHO WATER PURIFICATION EQUIPMENT CO., LTD.
- Zhipeng HAO
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
REMINERALIZATION OF DESALINATED AND OF FRESH WATER BY DOSING OF A C...
- Publication number 20250066229
- Publication date Feb 27, 2025
- Martine Poffet
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
COMPUTER-IMPLEMENTED METHOD AND APPARATUS TO DESIGN AND CONSTRUCT O...
- Publication number 20240330526
- Publication date Oct 3, 2024
- LEAF HOME WATER SOLUTIONS, LLC
- Thomas Victor CZERNY
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
METHOD AND SYSTEM FOR RECYCLING HEAVY OIL PRODUCED WATER FOR USE IN...
- Publication number 20240228328
- Publication date Jul 11, 2024
- CHINA NATIONAL PETROLEUM CORPORATION
- Jiacai XIE
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
METHOD AND SYSTEM FOR RECYCLING HEAVY OIL PRODUCED WATER FOR USE IN...
- Publication number 20240132378
- Publication date Apr 25, 2024
- CHINA NATIONAL PETROLEUM CORPORATION
- Jiacai XIE
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
PROCESS, SYSTEM, AND COMPUTER READABLE STORAGE MEDIUM FOR DETERMINI...
- Publication number 20230257283
- Publication date Aug 17, 2023
- Hach Company
- Matthew GRAY
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
LONGITUDINAL IN-SITU IMPEDANCE AND RESIN MONITORING SENSOR, AND MET...
- Publication number 20230249989
- Publication date Aug 10, 2023
- ECOWATER SYSTEMS LLC
- George Dimotsis
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
Filter head and extension kit for a filter head
- Publication number 20230202882
- Publication date Jun 29, 2023
- BWT Holding GmbH
- Pierre BALIDAS
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
WATER SOFTENING DEVICE
- Publication number 20230183105
- Publication date Jun 15, 2023
- Panasonic Intellectula Property Management Co., Ltd.
- Noriyoshi UEYA
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
SYSTEMS AND METHODS FOR TREATMENT OF HARD WATER
- Publication number 20230108978
- Publication date Apr 6, 2023
- Cargill, Incorporated
- Robert Scott Koefod
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
System and Method of Deionization of Water
- Publication number 20230025170
- Publication date Jan 26, 2023
- Evoqua Water Technologies LLC
- Erich G. Hoefferle
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
WATER SOFTENER SYSTEM AND METHOD OF OPERATING THE SAME
- Publication number 20220410139
- Publication date Dec 29, 2022
- A.O. Smith Corporation
- David Jeffrey Averbeck
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
SYSTEM FOR SIGNALING AND/OR DISPLAYING A DEPLETION CONDITION OF A F...
- Publication number 20220379244
- Publication date Dec 1, 2022
- LAICA S.P.A.
- Maurizio Moretto
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
APPARATUS FOR MEASURING WATER HARDNESS USING ION SELECTIVE ELECTRODE
- Publication number 20220317105
- Publication date Oct 6, 2022
- ECOWATER SYSTEMS LLC
- Malcolm Kahn
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
SYSTEMS AND TECHNIQUES FOR CLEANING PRESSURE MEMBRANE SYSTEMS USING...
- Publication number 20220226782
- Publication date Jul 21, 2022
- ECOLAB USA INC.
- Seong-Hoon Yoon
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Water Heater With Hardness Detection System
- Publication number 20220221163
- Publication date Jul 14, 2022
- RHEEM MANUFACTURING COMPANY
- Troy Trant
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
IN-LINE WATER HARDNESS SENSOR AND WATER SOFTENER CONTROL SYSTEM
- Publication number 20220194819
- Publication date Jun 23, 2022
- A.O. Smith Corporation
- Di Zhao
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
METHODS FOR PREDICTING AND MONITORING SCALE FORMATION IN INDUSTRIAL...
- Publication number 20220073371
- Publication date Mar 10, 2022
- ChemTreat, Inc.
- Rajendra Prasad KALAKODIMI
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
METHODS FOR ONLINE CONTROL OF A CHEMICAL TREATMENT SOLUTION USING S...
- Publication number 20210331942
- Publication date Oct 28, 2021
- ChemTreat, Inc.
- Kevin BOUDREAUX
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
APPARATUS FOR INHIBITING FORMATION OF CALCIUM BASED CRYSTAL AND APP...
- Publication number 20210300805
- Publication date Sep 30, 2021
- Korea Institute of Science and Technology
- Hye-won Kim
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
LONGITUDINAL IN-SITU IMPEDANCE AND RESIN MONITORING SENSOR, AND MET...
- Publication number 20210300785
- Publication date Sep 30, 2021
- ECOWATER SYSTEMS LLC
- George Dimotsis
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
APPARATUS FOR MEASURING WATER HARDNESS USING ION SELECTIVE ELECTRODE
- Publication number 20210239673
- Publication date Aug 5, 2021
- ECOWATER SYSTEMS LLC
- Malcolm Kahn
- G01 - MEASURING TESTING
Information Patent Application
SELF CONTAINED, AUTOMATIC WATER QUALITY MONITORING AND TREATMENT SY...
- Publication number 20210147256
- Publication date May 20, 2021
- Fluid Handling LLC
- Kyle D. SCHOENHEIT
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
METHOD FOR INCREASING THE MAGNESIUM ION CONCENTRATION IN FEED WATER
- Publication number 20210147266
- Publication date May 20, 2021
- Omya International AG
- Nicholas Charles NELSON
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Systems and methods for online control of a chemical treatment solu...

Method for operating a pasteurization apparatus

System and method of deionization of water

Method and apparatus for treating natural gas and oil well waste wa...

Systems and techniques for cleaning pressure membrane systems using...

Systems and methods for the removal of minerals from conductive pro...

Intelligent solar powered pool skimming robot

Apparatus and method for treating an aqueous liquid

Cooling pond water treatment system

Longitudinal in-situ impedance and resin monitoring sensor, and met...

Apparatus for measuring water hardness using ion selective electrode

Water heater with hardness detection system

Process of making alkaline and acidic water

Methods for predicting and monitoring scale formation in industrial...

Water filtration system with waste water treatment

Process for treating frac flowback and produced water including nat...

Methods for online control of a chemical treatment solution using s...

Spa/pool water treatment system and method

Longitudinal in-situ impedance and resin monitoring sensor, and met...

Cooling pond water treatment system

System and method of deionization of water

Apparatus for inhibiting formation of calcium based crystal and app...

Method for increasing the magnesium ion concentration in feed water

Apparatus for measuring water hardness using ion selective electrode

Water softening device and method of operating a water softening de...

Water heater with hardness detection system

Method of initiating a liquid treatment process in a liquid treatme...

Method for determining hardness concentration using a monovalent io...

Dishmachine

Laundry washing machine with water softening system and method for...

Patents Applicationslast 30 patents

WATER-SOFTENING DEVICE

INTELLIGENT DOSING CONTROL METHOD, DEVICE AND SYSTEM FOR SOFTENING...

SYSTEMS AND METHODS FOR RESIN BREAKTHROUGH IDENTIFICATION USING ION...

METHOD FOR OPERATING DEIONIZED WATER PRODUCTION SYSTEM AND DEIONIZE...

SYSTEM AND METHOD FOR REDUCING WASTEWATER HARDNESS AND CARBON CAPTU...

METHOD AND APPARATUS FOR ADJUSTING HARDNESS OF OUTFLOW WATER FROM W...

METHOD AND APPARATUS FOR DETERMINING HARDNESS OF RAW WATER OF WATER...

REMINERALIZATION OF DESALINATED AND OF FRESH WATER BY DOSING OF A C...

COMPUTER-IMPLEMENTED METHOD AND APPARATUS TO DESIGN AND CONSTRUCT O...

METHOD AND SYSTEM FOR RECYCLING HEAVY OIL PRODUCED WATER FOR USE IN...

METHOD AND SYSTEM FOR RECYCLING HEAVY OIL PRODUCED WATER FOR USE IN...

PROCESS, SYSTEM, AND COMPUTER READABLE STORAGE MEDIUM FOR DETERMINI...

LONGITUDINAL IN-SITU IMPEDANCE AND RESIN MONITORING SENSOR, AND MET...

Filter head and extension kit for a filter head

WATER SOFTENING DEVICE

SYSTEMS AND METHODS FOR TREATMENT OF HARD WATER

System and Method of Deionization of Water

WATER SOFTENER SYSTEM AND METHOD OF OPERATING THE SAME

SYSTEM FOR SIGNALING AND/OR DISPLAYING A DEPLETION CONDITION OF A F...

APPARATUS FOR MEASURING WATER HARDNESS USING ION SELECTIVE ELECTRODE

SYSTEMS AND TECHNIQUES FOR CLEANING PRESSURE MEMBRANE SYSTEMS USING...

Water Heater With Hardness Detection System

IN-LINE WATER HARDNESS SENSOR AND WATER SOFTENER CONTROL SYSTEM

METHODS FOR PREDICTING AND MONITORING SCALE FORMATION IN INDUSTRIAL...

METHODS FOR ONLINE CONTROL OF A CHEMICAL TREATMENT SOLUTION USING S...

APPARATUS FOR INHIBITING FORMATION OF CALCIUM BASED CRYSTAL AND APP...

LONGITUDINAL IN-SITU IMPEDANCE AND RESIN MONITORING SENSOR, AND MET...

APPARATUS FOR MEASURING WATER HARDNESS USING ION SELECTIVE ELECTRODE

SELF CONTAINED, AUTOMATIC WATER QUALITY MONITORING AND TREATMENT SY...

METHOD FOR INCREASING THE MAGNESIUM ION CONCENTRATION IN FEED WATER