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Makoto Takagawa
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Ibaraki-ken, JP
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Patents Grants
last 30 patents
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Patent Grant
Process for producing dimethyltetralin
Patent number
6,504,069
Issue date
Jan 7, 2003
Mitsubishi Gas Chemical Company, Inc.
Youichi Kyuuko
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for producing highly pure aromatic polycarboxylic acid
Patent number
6,452,047
Issue date
Sep 17, 2002
Mitsubishi Gas Chemical Company, Inc.
Ryusuke Shigematsu
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for producing highly pure 2,6-dimethylnaphthalene
Patent number
6,072,098
Issue date
Jun 6, 2000
Mitsubishi Gas Chemical Company, Inc.
Makoto Takagawa
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for producing 2,6-dimethylnaphthalene
Patent number
5,948,949
Issue date
Sep 7, 1999
Mitsubishi Gas Chemical Company, Inc.
Makoto Takagawa
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for producing benzoyl chlorides
Patent number
5,872,291
Issue date
Feb 16, 1999
Mitsubishi Gas Chemical Company, Inc.
Takeshi Koshikawa
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the production of high-purity naphthalenedicarboxylic acid
Patent number
5,859,294
Issue date
Jan 12, 1999
Mitsubishi Gas Chemical Corporation, Inc.
Akio Hashimoto
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the production of pyridinecarboxylic acids
Patent number
5,700,944
Issue date
Dec 23, 1997
Mitsubishi Gas Chemical Company
Toshihiro Hashimoto
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for producing a monoalkenyl aromatic hydrocarbon compound
Patent number
5,659,097
Issue date
Aug 19, 1997
Mitsubishi Gas Chemical Company, Inc.
Norio Fushimi
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for producing alkylbenzoyl chloride
Patent number
5,599,981
Issue date
Feb 4, 1997
Mitsubishi Gas Chemical Company, Inc.
Norio Fushimi
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for producing monoalkenyl aromatic hydrocarbon compound
Patent number
5,527,977
Issue date
Jun 18, 1996
Mitsubishi Gas Chemical Company, Inc.
Makoto Takagawa
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Method for isomerizing dimethylnaphthalene
Patent number
5,495,060
Issue date
Feb 27, 1996
Mitsubishi Gas Chemical Company, Inc.
Makoto Takagawa
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Method for isomerizing dimethylnaphthalene
Patent number
5,481,055
Issue date
Jan 2, 1996
Mitsubishi Gas Chemical Company, Inc.
Makoto Takagawa
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for producing dimethylnaphthalene
Patent number
5,446,226
Issue date
Aug 29, 1995
Mitsubishi Gas Chemical Company, Inc.
Shinji Ozawa
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for producing a monoalkenyl aromatic hydrocarbon compound
Patent number
5,444,172
Issue date
Aug 22, 1995
Mitsubishi Gas Chemical Company, Inc.
Makoto Takagawa
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for producing a monoalkenyl aromatic hydrocarbon compound
Patent number
5,436,381
Issue date
Jul 25, 1995
Mitsubishi Gas Chemical Company, Inc.
Makoto Takagawa
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for production of dimethylnaphthalene
Patent number
5,396,007
Issue date
Mar 7, 1995
Mitsubishi Gas Chemical Company, Inc.
Yoichi Kyuko
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for production of dimethyltetralin
Patent number
5,396,008
Issue date
Mar 7, 1995
Mitsubishi Gas Chemical Co., Inc.
Shinji Ozawa
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for producing bisaminomethylcyclohexane
Patent number
5,371,293
Issue date
Dec 6, 1994
Mitsubishi Gas Chemical Company, Inc.
Makoto Takagawa
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for producing monoalkenyl armomatic hydrocarbon compound
Patent number
5,367,098
Issue date
Nov 22, 1994
Mitsubishi Gas Chemical Company, Inc.
Norio Fushimi
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for producing monoalkenyl aromatic hydrocarbon compound
Patent number
5,344,806
Issue date
Sep 6, 1994
Mitsubishi Gas Chemical Company, Inc.
Norio Fushimi
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for producing monoalkenyl aromatic hydrocarbon compound
Patent number
5,334,794
Issue date
Aug 2, 1994
Mitsubishi Gas Chemical Company, Inc.
Norio Fushimi
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for producing 2,6-dimethylnaphthalene
Patent number
5,321,178
Issue date
Jun 14, 1994
Mitsubishi Gas Chemical Company, Inc.
Kenji Inamasa
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for production of 2,6-dimethylnaphthalene
Patent number
5,276,230
Issue date
Jan 4, 1994
Mitsubishi Gas Chemical Company, Inc.
Kenji Inamasa
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Method of isomerization of dimethylnaphthalenes
Patent number
5,254,769
Issue date
Oct 19, 1993
Mitsubishi Gas Chemical Company, Inc.
Makoto Takagawa
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for producing 2,6-dimethylnaphthalene
Patent number
5,068,480
Issue date
Nov 26, 1991
Mitsubishi Gas Chemical Company, Inc.
Makoto Takagawa
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Catalyst composition for decomposition of methanol
Patent number
4,916,104
Issue date
Apr 10, 1990
Mitsubishi Gas Chemical Company, Inc.
Nobuo Isogai
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Process for producing fatty acids and their ester derivatives
Patent number
4,894,188
Issue date
Jan 16, 1990
Mitsubishi Gas Chemical Company, Inc.
Takehiko Takahashi
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Catalyst composition suitable for synthesis of methanol
Patent number
4,666,945
Issue date
May 19, 1987
Mitsubishi Gas Chemical Company, Inc.
Minoru Osugi
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for converting hydrocarbon
Patent number
4,311,868
Issue date
Jan 19, 1982
Mitsubishi Gas Chemical Company, Inc.
Tamotsu Ueno
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for isomerizing hydrocarbons
Patent number
4,311,867
Issue date
Jan 19, 1982
Mitsubishi Gas Chemical Company, Inc.
Makoto Takagawa
C07 - ORGANIC CHEMISTRY