Hisashi Watabu

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Ibaraki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for producing high purity cyanate
- Patent number 6,603,035
- Issue date Aug 5, 2003
- Sumitomo Chemical Company, Limited
- Satoshi Okamoto
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Purification method of cyanate
- Patent number 6,225,492
- Issue date May 1, 2001
- Sumitomo Chemical Co., Ltd.
- Satoshi Okamoto
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Cyanite composition and copper-clad laminate using the composition
- Patent number 6,037,438
- Issue date Mar 14, 2000
- Sumitomo Chemical Company, Limited
- Yasuhiro Endo
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Cyanate resin composition and copper-clad laminate
- Patent number 5,563,237
- Issue date Oct 8, 1996
- Sumitomo Chemical Company, Limited
- Yasuhiro Endo
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...