Sakuji Yoshihara

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Mizuho-machi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Sheet glass flattening method, method of manufacturing an informati...
- Patent number 5,916,656
- Issue date Jun 29, 1999
- Hoya Corporation
- Teruki Kitayama
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Method of manufacturing a magnetic recording disk using glass subst...
- Patent number 5,725,625
- Issue date Mar 10, 1998
- Hoya Corporation
- Teruki Kitayama
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Method of manufacturing a magnetic recording disk
- Patent number 5,681,609
- Issue date Oct 28, 1997
- Hoya Corporation
- Teruki Kitayama
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Sheet glass flattening method, method of manufacturing glass substr...
- Patent number 5,654,057
- Issue date Aug 5, 1997
- Hoya Corporation
- Teruki Kitayama
- C03 - GLASS MINERAL OR SLAG WOOL