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Masaharu Doya
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Niigata, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Process for production of iodine compounds and process for producti...
Patent number
7,750,182
Issue date
Jul 6, 2010
Mitsubishi Gas Chemical Company, Inc.
Toshio Hidaka
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Method for producing L-allysine acetal
Patent number
6,174,711
Issue date
Jan 16, 2001
Mitsubishi Gas Chemical Company
Akinori Tanaka
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for producing trans 1,4-bis(aminomethyl)cyclohexane
Patent number
5,969,187
Issue date
Oct 19, 1999
Mitsubishi Gas Chemical Company, Inc.
Takashi Okawa
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the production of dialkyl carbonate
Patent number
5,489,702
Issue date
Feb 6, 1996
Mitsubishi Gas Chemical Company, Inc.
Masaharu Doya
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Method and apparatus for the production of alkylene carbonate
Patent number
5,440,004
Issue date
Aug 8, 1995
Mitsubishi Gas Chemical Company, Inc.
Masaharu Doya
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for producing alkylene carbonates
Patent number
5,349,077
Issue date
Sep 20, 1994
Mitsubishi Gas Chemical Company, Inc.
Masaharu Doya
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for recimization of an optically active alpha-amino acid am...
Patent number
4,918,196
Issue date
Apr 17, 1990
Mitsubishi Gas Chemical Company, Inc.
Masaharu Doya
C12 - BIOCHEMISTRY BEER SPIRITS WINE VINEGAR MICROBIOLOGY ENZYMOLOGY MUTATION...
Information
Patent Grant
Electrodialytic recovery of .alpha.-amino acid from its amide
Patent number
4,605,477
Issue date
Aug 12, 1986
Mitsubishi Gas Chemical Company, Inc.
Masaharu Doya
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Process for producing .alpha.-amino acids
Patent number
4,459,423
Issue date
Jul 10, 1984
Mitsubishi Gas Chemical Company, Inc.
Masaharu Doya
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the production of aromatic dialdehydes
Patent number
4,328,374
Issue date
May 4, 1982
Mitsubishi Gas Chemical Co., Inc.
Shigeo Yoshinaka
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for producing phthaloyl dichlorides of high purity
Patent number
4,165,337
Issue date
Aug 21, 1979
Mitsubishi Gas Chemical Company, Inc.
Shigeo Yoshinaka
C07 - ORGANIC CHEMISTRY
Patents Applications
last 30 patents
Information
Patent Application
METHOD FOR CO-PRODUCING IODINE AND SALT
Publication number
20230069167
Publication date
Mar 2, 2023
TOHO EARTHTECH, INC.
Masaharu DOYA
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
METHOD FOR PRODUCING 3-METHYL-CYCLOPENTADECENONES, METHOD FOR PRODU...
Publication number
20110172465
Publication date
Jul 14, 2011
Masaharu Doya
C07 - ORGANIC CHEMISTRY
Information
Patent Application
Process for production of iodine compounds and process for producti...
Publication number
20060161028
Publication date
Jul 20, 2006
Toshio Hidaka
C07 - ORGANIC CHEMISTRY