P

Inventor

AOYAMA TETSUO

JP36 patents
⚠️ This page may combine multiple inventors who share the name “AOYAMA TETSUO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

MITSUBISHI GAS CHEMICAL CO

24 patents
US5242879ASep 7, 1993

Active carbon materials, process for the preparation thereof and the use thereof

MITSUBISHI GAS CHEMICAL CO189 citations98
US6372410B1Apr 16, 2002

Resist stripping composition

MITSUBISHI GAS CHEMICAL CO107 citations97
US5972862AOct 26, 1999

Cleaning liquid for semiconductor devices

MITSUBISHI GAS CHEMICAL CO234 citations96
US5962385AOct 5, 1999

Cleaning liquid for semiconductor devices

MITSUBISHI GAS CHEMICAL CO74 citations96
US5174816ADec 29, 1992

Surface treating agent for aluminum line pattern substrate

MITSUBISHI GAS CHEMICAL CO67 citations96
US6440326B1Aug 27, 2002

Photoresist removing composition

MITSUBISHI GAS CHEMICAL CO57 citations95
US5630904AMay 20, 1997

Stripping and cleaning agent for removing dry-etching and photoresist residues from a semiconductor substrate, and a method for forming a line pattern using the stripping and cleaning agent

MITSUBISHI GAS CHEMICAL CO86 citations94
US6638694B2Oct 28, 2003

Resist stripping agent and process of producing semiconductor devices using the same

MITSUBISHI GAS CHEMICAL CO56 citations92
US5338462AAug 16, 1994

Active carbon materials, process for the preparation thereof and the use thereof

MITSUBISHI GAS CHEMICAL CO41 citations92
US5175078ADec 29, 1992

Positive type photoresist developer

MITSUBISHI GAS CHEMICAL CO31 citations92
US5911836AJun 15, 1999

Method of producing semiconductor device and rinse for cleaning semiconductor device

MITSUBISHI GAS CHEMICAL CO37 citations91
US5846695ADec 8, 1998

Removing agent composition for a photoresist and process for producing a semiconductor integrated circuit

MITSUBISHI GAS CHEMICAL CO19 citations91
US4776929AOct 11, 1988

Process for production of quaternary ammonium hydroxides

MITSUBISHI GAS CHEMICAL CO40 citations91
US4521638AJun 4, 1985

Process for preparation of tertiary olefins

MITSUBISHI GAS CHEMICAL CO24 citations81
US5393386AFeb 28, 1995

Method for preparing aqueous quaternary ammonium hydroxide solution

MITSUBISHI GAS CHEMICAL CO9 citations74
US4613684ASep 23, 1986

Process for the preparation of carboxylic acid esters

MITSUBISHI GAS CHEMICAL CO10 citations73
US4094905AJun 13, 1978

Process for producing dimethyl formamide

MITSUBISHI GAS CHEMICAL CO7 citations71
US4013725AMar 22, 1977

Process for preparing hydroperoxide

MITSUBISHI GAS CHEMICAL CO9 citations71
US5538832AJul 23, 1996

Developing solution for producing printed circuit boards and a process for producing printed circuit boards wherein the developing solution comprises a quaternary ammonium hydroxide and a quaternary ammonium carbonate

MITSUBISHI GAS CHEMICAL CO4 citations61
US5693599ADec 2, 1997

Flux washing agent

MITSUBISHI GAS CHEMICAL CO4 citations60
US4218398AAug 19, 1980

Process for producing dimethylformamide

MITSUBISHI GAS CHEMICAL CO2 citations60
US4163863AAug 7, 1979

Process for preparing a methylphenol

MITSUBISHI GAS CHEMICAL CO5 citations60
US4224243ASep 23, 1980

Process for producing dimethyl formamide

MITSUBISHI GAS CHEMICAL CO4 citations59
US4230636AOct 28, 1980

Process for producing dimethyl formamide

MITSUBISHI GAS CHEMICAL CO1 citations52

SHARP KK

3 patents

TOKYO ELECTRON LTD

2 patents

EKC TECHNOLOGY K K

1 patent

EKC TECHNOLOGY INC

1 patent

MITSUBISHI GAS CHEMICALS CO IN

1 patent

TEXAS INSTRUMENTS INC

1 patent

MITSUBISHI ELECTRIC CORP

1 patent

SONY CORP

1 patent

TAGO TSUGUHIRO

1 patent