Toshio Sakiyama

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method of manufacturing a magnetic disk substrate of titanium
- Patent number 5,221,459
- Issue date Jun 22, 1993
- NKK Corporation
- Yoko Okano
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Grant
Method for mirror polishing of ti-made magnetic disk substrate
- Patent number 5,136,819
- Issue date Aug 11, 1992
- Masakuni Takagi
- B24 - GRINDING POLISHING
Information Patent Grant
Method of manufacturing titanium magnetic disk substrate
- Patent number 5,131,995
- Issue date Jul 21, 1992
- NKK Corporation
- Hiroyoshi Suenaga
- G11 - INFORMATION STORAGE