Inventor
CHALK DAVID JONATHAN
US12 patents
⚠️ This page may combine multiple inventors who share the name “CHALK DAVID JONATHAN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
AIR PROD & CHEM
10 patentsUS7488159B2Feb 10, 2009
Zero-clearance ultra-high-pressure gas compressor
AIR PROD & CHEM70 citations95
US8807571B2Aug 19, 2014
Wear-compensating sealing ring assembly
AIR PROD & CHEM20 citations85
US10883483B2Jan 5, 2021
Seal assembly for reciprocating compressor
AIR PROD & CHEM8 citations83
US7410348B2Aug 12, 2008
Multi-speed compressor/pump apparatus
AIR PROD & CHEM20 citations83
US6530761B1Mar 11, 2003
Double-acting, two-stage pump
AIR PROD & CHEM17 citations82
US6474078B2Nov 5, 2002
Pumping system and method for pumping fluids
AIR PROD & CHEM18 citations79
US7168446B2Jan 30, 2007
High impact discharge valve
AIR PROD & CHEM6 citations57
US12031684B2Jul 9, 2024
System and method for gaseous hydrogen recovery in a hydrogen fueling station
AIR PROD & CHEM0 citations56
US12092093B2Sep 17, 2024
Apparatus and method for cryogenic pump cooldown
AIR PROD & CHEM0 citations48
US10876634B2Dec 29, 2020
Annular sealing assembly
AIR PROD & CHEM0 citations33