Inventor
IWATA KEIICHI
JP11 patents
⚠️ This page may combine multiple inventors who share the name “IWATA KEIICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
JAPAN PIONICS
6 patentsUS5597540AJan 28, 1997
Process for cleaning harmful gas
JAPAN PIONICS53 citations95
US5378444AJan 3, 1995
Process for cleaning harmful gas
JAPAN PIONICS33 citations92
US5019364AMay 28, 1991
Method for purifying gaseous hydrides
JAPAN PIONICS7 citations73
US4976942ADec 11, 1990
Method for purifying gaseous hydrides
JAPAN PIONICS13 citations73
US5417948AMay 23, 1995
Process for cleaning harmful gas
JAPAN PIONICS17 citations72
US5470555ANov 28, 1995
Process for purification of gaseous organometallic compound
JAPAN PIONICS16 citations69
MITSUBISHI GAS CHEMICAL CO
4 patentsUS5567574AOct 22, 1996
Removing agent composition for photoresist and method of removing
MITSUBISHI GAS CHEMICAL CO60 citations94
US5846695ADec 8, 1998
Removing agent composition for a photoresist and process for producing a semiconductor integrated circuit
MITSUBISHI GAS CHEMICAL CO19 citations91
US7140103B2Nov 28, 2006
Process for the production of high-density printed wiring board
MITSUBISHI GAS CHEMICAL CO13 citations81
US6602654B2Aug 5, 2003
Developing solution for a photoresist and a method for developing the photoresist
MITSUBISHI GAS CHEMICAL CO4 citations59