Haruhiko Yoshida

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Kawasaki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for hydrogenation of coal tar pitch
- Patent number 4,909,923
- Issue date Mar 20, 1990
- Nippon Steel Chemical Co., Ltd.
- Hiroshi Okazaki
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL