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 patentsUS5242879ASep 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 patentsUS6686322B1Feb 3, 2004
Cleaning agent and cleaning process using the same
SHARP KK39 citations91
US6458517B2Oct 1, 2002
Photoresist stripping composition and process for stripping photoresist
SHARP KK26 citations91
US6500270B2Dec 31, 2002
Resist film removing composition and method for manufacturing thin film circuit element using the composition
SHARP KK9 citations72