Takeshi Koyama

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Handa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for producing carbonic acid diester
- Patent number 6,120,738
- Issue date Sep 19, 2000
- JGC Corporation
- Hiroshi Umino
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Solid particle containing active carbon, support and catalyst
- Patent number 5,972,525
- Issue date Oct 26, 1999
- JGC Corporation
- Kenji Mori
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for producing a carbonic acid diester
- Patent number 5,831,113
- Issue date Nov 3, 1998
- JGC Corporation
- Hiroshi Umino
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for producing carbonic acid diester
- Patent number 5,780,663
- Issue date Jul 14, 1998
- JGC Corporation
- Kenji Mori
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Catalysts used for producing carbonic acid esters and methods of pr...
- Patent number 5,650,369
- Issue date Jul 22, 1997
- JGC Corporation
- Takeshi Koyama
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Catalysts used for producing carbonic acid esters and methods of pr...
- Patent number 5,512,528
- Issue date Apr 30, 1996
- JGC Corporation
- Takeshi Koyama
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Catalysts used for producing carbonic acid esters and methods of pr...
- Patent number 5,347,031
- Issue date Sep 13, 1994
- JGC Corporation
- Takeshi Koyama
- C07 - ORGANIC CHEMISTRY