Seiichi Okuyama

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Yatusiro, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for manufacturing high strength isotropic graphite piston co...
- Patent number 5,525,276
- Issue date Jun 11, 1996
- Tokai Carbon Company Ltd.
- Seiichi Okuyama
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES

Patents Applicationslast 30 patents

Information Patent Application
POLYCRYSTALLINE SIC ARTICLE AND METHOD FOR MANUFACTURING SAME
- Publication number 20220344452
- Publication date Oct 27, 2022
- TOKAI CARBON CO., LTD.
- Yuji Ushijima
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
POLYCRYSTALLINE SIC ARTICLE
- Publication number 20220341054
- Publication date Oct 27, 2022
- TOKAI CARBON CO., LTD.
- Yuji Ushijima
- C30 - CRYSTAL GROWTH