Inventor

KOOPMAN JOHN

CA3 patents

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

PROTON ENERGY SYS INC

2 patents

US7159444B2Jan 9, 2007

Combustible gas detection systems and method thereof

PROTON ENERGY SYS INC5 citations55

US7111493B2Sep 26, 2006

Combustible gas detection system

PROTON ENERGY SYS INC2 citations52

COLJA RENATO

1 patent

US8162398B2Apr 24, 2012

Zone lumbar massage system

COLJA RENATO41 citations90