Inventor

KOTANI TAMOTSU

JP5 patents

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

AIR LIQUIDE

2 patents

US4107508AAug 15, 1978

Method and apparatus for welding using fillet-wire

AIR LIQUIDE24 citations73

US4039802AAug 2, 1977

Method of automatic or semi-automatic welding with gases

AIR LIQUIDE1 citations47

UTAKI TAKAHISA

2 patents

US8974575B2Mar 10, 2015

Method of enriching combustible gas

UTAKI TAKAHISA2 citations54

US8940081B2Jan 27, 2015

Combustible gas enrichment apparatus

UTAKI TAKAHISA2 citations51

OSAKA GAS CO LTD

1 patent

US10124287B2Nov 13, 2018

Gas concentration method

OSAKA GAS CO LTD0 citations40