Kenji Koyama

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Shin-nanyo, JA

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Patents Grantslast 30 patents

Information Patent Grant
Porous synthetic resin film
- Patent number 4,096,099
- Issue date Jun 20, 1978
- Toyo Soda Manufacturing Co., Ltd.
- Kenji Koyama
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL