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David Jonathan Chalk

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  • Slatington, PA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Seal assembly for reciprocating compressor
    • Patent number 10,883,483
    • Issue date Jan 5, 2021
    • Air Products and Chemicals, Inc.
    • David Jonathan Chalk
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Annular sealing assembly
    • Patent number 10,876,634
    • Issue date Dec 29, 2020
    • Air Products and Chemicals, Inc.
    • David Jonathan Chalk
    • F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
  • Information Patent Grant

    Compressor assemblies and methods to minimize venting of a process...
    • Patent number 9,494,281
    • Issue date Nov 15, 2016
    • Air Products and Chemicals, Inc.
    • David Jonathan Chalk
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Grant

    Wear-compensating sealing ring assembly
    • Patent number 8,807,571
    • Issue date Aug 19, 2014
    • Air Products and Chemicals, Inc.
    • David Jonathan Chalk
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Zero-clearance ultra-high-pressure gas compressor
    • Patent number 7,488,159
    • Issue date Feb 10, 2009
    • Air Products and Chemicals, Inc.
    • Bharat Lajjaram Bhatt
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Multi-speed compressor/pump apparatus
    • Patent number 7,410,348
    • Issue date Aug 12, 2008
    • Air Products and Chemicals, Inc.
    • David Jonathan Chalk
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    High impact discharge valve
    • Patent number 7,168,446
    • Issue date Jan 30, 2007
    • Air Products and Chemicals, Inc.
    • David Jonathan Chalk
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Double-acting, two-stage pump
    • Patent number 6,530,761
    • Issue date Mar 11, 2003
    • Air Products and Chemicals, Inc.
    • David Jonathan Chalk
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Pumping system and method for pumping fluids
    • Patent number 6,474,078
    • Issue date Nov 5, 2002
    • Air Products and Chemicals, Inc.
    • David Jonathan Chalk
    • F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
  • Information Patent Grant

    Superconducting magnet split cryostat cryogen ride-through reserve
    • Patent number 6,011,456
    • Issue date Jan 4, 2000
    • Phillip W. Eckels
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Method and apparatus for precooling a mass prior to immersion in a...
    • Patent number 5,960,636
    • Issue date Oct 5, 1999
    • Air Products and Chemicals, Inc.
    • Thomas W. Schuck
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...

Patents Applicationslast 30 patents

  • Information Patent Application

    APPARATUS AND METHOD FOR CRYOGENIC PUMP COOLDOWN
    • Publication number 20230287875
    • Publication date Sep 14, 2023
    • Air Products and Chemicals, Inc.
    • Steven W. Hoffman
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Method and System for Forming and Dispensing a Compressed Gas
    • Publication number 20230279996
    • Publication date Sep 7, 2023
    • Air Products and Chemicals, Inc.
    • Michael Cacciapalle
    • F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
  • Information Patent Application

    SYSTEM AND METHOD FOR GASEOUS HYDROGEN RECOVERY IN A HYDROGEN FUELI...
    • Publication number 20230107342
    • Publication date Apr 6, 2023
    • Air Products and Chemicals, Inc.
    • David Jonathan Chalk
    • F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
  • Information Patent Application

    Method and System for Forming and Dispensing a Compressed Gas
    • Publication number 20220128195
    • Publication date Apr 28, 2022
    • Air Products and Chemicals, Inc.
    • Michael Cacciapalle
    • F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
  • Information Patent Application

    Annular Sealing Assembly
    • Publication number 20200332900
    • Publication date Oct 22, 2020
    • Air Products and Chemicals, Inc.
    • David Jonathan Chalk
    • F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
  • Information Patent Application

    Seal Assembly for Reciprocating Compressor
    • Publication number 20200102946
    • Publication date Apr 2, 2020
    • Air Products and Chemicals, Inc.
    • David Jonathan Chalk
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Wear-Compensating Sealing Ring Assembly
    • Publication number 20140090554
    • Publication date Apr 3, 2014
    • Air Products and Chemicals, Inc.
    • David Jonathan Chalk
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Compressor Assemblies and Methods to Minimize Venting of a Process...
    • Publication number 20130125568
    • Publication date May 23, 2013
    • Air Products and Chemicals, Inc.
    • David Jonathan Chalk
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Multi-speed compressor/pump apparatus
    • Publication number 20070028628
    • Publication date Feb 8, 2007
    • David Jonathan Chalk
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    High impact discharge valve
    • Publication number 20060260693
    • Publication date Nov 23, 2006
    • David Jonathan Chalk
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Zero-clearance ultra-high-pressure gas compressor
    • Publication number 20050284155
    • Publication date Dec 29, 2005
    • Bharat Lajjaram Bhatt
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Directional, low-leakage seal assembly
    • Publication number 20020145259
    • Publication date Oct 10, 2002
    • David Jonathan Chalk
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    PUMPING SYSTEM AND METHOD FOR PUMPING FLUIDS
    • Publication number 20020144509
    • Publication date Oct 10, 2002
    • David Jonathan Chalk
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...