TREA

Lontra Inc

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  • Centennial, CO, US
Organizations

Patents Grantslast 30 patents

  • Information Patent Grant

    Check valve
    • Patent number 11,859,724
    • Issue date Jan 2, 2024
    • Lontra Limited
    • Stephen Francis Lindsey
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Rotary piston and cylinder device with single stator side
    • Patent number 11,859,495
    • Issue date Jan 2, 2024
    • Lontra Limited
    • Stephen Francis Lindsey
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Rotary piston and cylinder with the rotor including a formation and...
    • Patent number 11,536,139
    • Issue date Dec 27, 2022
    • Lontra Limited
    • Stephen Francis Lindsey
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Rotary piston and cylinder device with flared curved rotor surface
    • Patent number 11,519,268
    • Issue date Dec 6, 2022
    • Lontra Limited
    • Stephen Francis Lindsey
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Rotary piston and cylinder device having a dish ringed rotor
    • Patent number 11,319,812
    • Issue date May 3, 2022
    • LONTRA LIMITED
    • Stephen Francis Lindsey
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Rotary piston and cylinder device
    • Patent number 11,131,193
    • Issue date Sep 28, 2021
    • LONTRA LIMITED
    • Stephen Francis Lindsey
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Rotary piston and cylinder devices
    • Patent number 11,008,865
    • Issue date May 18, 2021
    • LONTRA LIMITED
    • Stephen Francis Lindsey
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Rotary piston and cylinder device
    • Patent number 10,961,849
    • Issue date Mar 30, 2021
    • LONTRA LIMITED
    • Stephen Francis Lindsey
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Rotary piston and cylinder devices
    • Patent number 10,794,186
    • Issue date Oct 6, 2020
    • Lontra Limited
    • Stephen F. Lindsey
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Rotary piston and cylinder devices
    • Patent number 10,662,775
    • Issue date May 26, 2020
    • LONTRA LIMITED
    • Stephen Francis Lindsey
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Rotary piston and cylinder device
    • Patent number 10,400,601
    • Issue date Sep 3, 2019
    • LONTRA LIMITED
    • Stephen Francis Lindsey
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Rotary piston and cylinder devices
    • Patent number 9,879,534
    • Issue date Jan 30, 2018
    • Lontra Limited
    • Stephen F. Lindsey
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Rotary piston and cylinder devices
    • Patent number 9,057,268
    • Issue date Jun 16, 2015
    • Lontra Limited
    • Stephen Francis Lindsey
    • F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...

Patents Applicationslast 30 patents

  • Information Patent Application

    SYSTEMS AND METHODS FOR CONTROLLED BATTERY HEATING
    • Publication number 20240178696
    • Publication date May 30, 2024
    • Lontra Inc
    • Daniel A. Konopka
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    CHECK VALVE
    • Publication number 20220186851
    • Publication date Jun 16, 2022
    • LONTRA LIMITED
    • Stephen Francis LINDSEY
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    ROTARY PISTON AND CYLINDER DEVICE
    • Publication number 20190242258
    • Publication date Aug 8, 2019
    • LONTRA LIMITED
    • Stephen Francis LINDSEY
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    ROTARY PISTON AND CYLINDER DEVICE
    • Publication number 20190234215
    • Publication date Aug 1, 2019
    • LONTRA LIMITED
    • Stephen Francis LINDSEY
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    ROTARY PISTON AND CYLINDER DEVICE
    • Publication number 20190218911
    • Publication date Jul 18, 2019
    • LONTRA LIMITED
    • Stephen Francis LINDSEY
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    ROTARY PISTON AND CYLINDER DEVICE
    • Publication number 20190195071
    • Publication date Jun 27, 2019
    • LONTRA LIMITED
    • Stephen Francis Lindsey
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    ROTARY PISTON AND CYLINDER DEVICES
    • Publication number 20180128105
    • Publication date May 10, 2018
    • LONTRA LIMITED
    • Stephen F. Lindsey
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    ROTARY PISTON AND CYLINDER DEVICES
    • Publication number 20170211389
    • Publication date Jul 27, 2017
    • LONTRA LIMITED
    • Stephen Francis Lindsey
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    ROTARY PISTON AND CYLINDER DEVICE
    • Publication number 20170211387
    • Publication date Jul 27, 2017
    • LONTRA LIMITED
    • Stephen Francis Lindsey
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Application

    ROTARY PISTON AND CYLINDER DEVICE
    • Publication number 20170211388
    • Publication date Jul 27, 2017
    • LONTRA LIMITED
    • Stephen Francis Lindsey
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Application

    ROTARY PISTON AND CYLINDER DEVICES
    • Publication number 20170204727
    • Publication date Jul 20, 2017
    • LONTRA LIMITED
    • Stephen Francis Lindsey
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

Trademarklast 30 trademarks

  • Information Trademark

    79171856 - LONTRA
    • Serial number 79171856
    • Registration number 5010101
    • Filing date Feb 12, 2015
    • Lontra Limited
    • 7 - Machines and machine tools
  • Information Trademark

    79171657 - LONTRA
    • Serial number 79171657
    • Registration number 5000620
    • Filing date Nov 7, 2014
    • Lontra Limited
    • 7 - Machines and machine tools
  • Information Trademark

    77126764 - L LONTRA
    • Serial number 77126764
    • Filing date Mar 9, 2007
    • Lontra, Inc.
    • 42 - Scientific and technological services and research and design relating thereto
  • Information Trademark

    77126263 - L LONTRA
    • Serial number 77126263
    • Filing date Mar 8, 2007
    • Lontra, Inc.
    • 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
  • Information Trademark

    77102776 - LONTRA
    • Serial number 77102776
    • Filing date Feb 8, 2007
    • Lontra, Inc.
    • 42 - Scientific and technological services and research and design relating thereto
  • Information Trademark

    77102732 - LONTRA
    • Serial number 77102732
    • Filing date Feb 8, 2007
    • Lontra, Inc.
    • 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments