Kazumi Ohkawa

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Kunitachi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Phosphazene article and process for producing the same
- Patent number 4,959,442
- Issue date Sep 25, 1990
- Teijin Limited
- Kazumi Ohkawa
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process of making photosensitive resin printing plates
- Patent number 4,197,125
- Issue date Apr 8, 1980
- Teijin Limited
- Kazumi Ohkawa
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...