Inventor

VOLK JAMES JOSEPH

US4 patents

⚠️ This page may combine multiple inventors who share the name “VOLK JAMES JOSEPH”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

PRAXAIR TECHNOLOGY INC

3 patents

US6938426B1Sep 6, 2005

Cryocooler system with frequency modulating mechanical resonator

PRAXAIR TECHNOLOGY INC17 citations80

US7316859B2Jan 8, 2008

Storage system and method for supplying hydrogen to a polymer membrane fuel cell

PRAXAIR TECHNOLOGY INC7 citations66

US6648946B2Nov 18, 2003

Process for recovering helium using an eductor

PRAXAIR TECHNOLOGY INC1 citations46

GHD INC

1 patent

US12377745B2Aug 5, 2025

Combined hydrogen fuel cell for vehicle fueling, electric vehicle fast charging and fuel cell back-up power forecourt

GHD INC0 citations39