Inventor

OKA HIROMI

JP4 patents

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

TOKYO ELECTRON LTD

2 patents

US7432172B2Oct 7, 2008

Plasma etching method

TOKYO ELECTRON LTD2 citations60

US7179752B2Feb 20, 2007

Dry etching method

TOKYO ELECTRON LTD1 citations49

SUMITOMO CHEMICAL CO

1 patent

US5585218ADec 17, 1996

Photoresist composition containing alkyletherified polyvinylphenol

SUMITOMO CHEMICAL CO24 citations90

TOSHIBA KK

1 patent

US7304452B2Dec 4, 2007

Motor control device

TOSHIBA KK52 citations89