Inventor · disambiguated record
David Jonathan Chalk
Also filed as: CHALK DAVID J · CHALK DAVID JONATHAN
13 granted patents·4 pending applications·208 citations·filing 1997–2023
92Inventor score
Top patents by PatentIndex Score
17 records- 0194US8807571B2Wear-compensating sealing ring assemblyAIR PROD & CHEM·Filed 2012·Granted Aug 19, 2014·20 cites·17 claims
- 0293US10883483B2Seal assembly for reciprocating compressorAIR PROD & CHEM·Filed 2018·Granted Jan 5, 2021·8 cites·20 claims
- 0392US7488159B2Zero-clearance ultra-high-pressure gas compressorAIR PROD & CHEM·Filed 2004·Granted Feb 10, 2009·70 cites·8 claims
- 0491US7410348B2Multi-speed compressor/pump apparatusAIR PROD & CHEM·Filed 2005·Granted Aug 12, 2008·20 cites·12 claims
- 0580US9494281B2Compressor assemblies and methods to minimize venting of a process gas during startup operationsCHALK DAVID JONATHAN·Filed 2012·Granted Nov 15, 2016·7 cites·22 claims
- 0675US6530761B1Double-acting, two-stage pumpAIR PROD & CHEM·Filed 2001·Granted Mar 11, 2003·17 cites·15 claims
- 0775US2023279996A1Method and System for Forming and Dispensing a Compressed GasAIR PROD & CHEM·Filed 2023·Application pending·0 cites
- 0869US12031684B2System and method for gaseous hydrogen recovery in a hydrogen fueling stationAIR PROD & CHEM·Filed 2021·Granted Jul 9, 2024·0 cites·17 claims
- 0964US6474078B2Pumping system and method for pumping fluidsAIR PROD & CHEM·Filed 2001·Granted Nov 5, 2002·18 cites·25 claims
- 1064US2022128195A1Method and System for Forming and Dispensing a Compressed GasAIR PROD & CHEM·Filed 2020·Application pending·0 cites
- 1159US2024353066A1Apparatus and Method for Dispensing a Cryogenic FluidAIR PROD & CHEM·Filed 2023·Application pending·0 cites
- 1255US7168446B2High impact discharge valveAIR PROD & CHEM·Filed 2005·Granted Jan 30, 2007·6 cites·17 claims
- 1355US5960636AMethod and apparatus for precooling a mass prior to immersion in a cryogenic liquidAIR PROD & CHEM·Filed 1997·Granted Oct 5, 1999·21 cites·10 claims
- 1454US6011456ASuperconducting magnet split cryostat cryogen ride-through reserveFiled 1998·Granted Jan 4, 2000·21 cites·18 claims
- 1549US12092093B2Apparatus and method for cryogenic pump cooldownAIR PROD & CHEM·Filed 2022·Granted Sep 17, 2024·0 cites·9 claims
- 1640US10876634B2Annular sealing assemblyAIR PROD & CHEM·Filed 2019·Granted Dec 29, 2020·0 cites·14 claims
- 1738US2002145259A1Directional, low-leakage seal assemblyFiled 2001·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →