Hiroshi Takahashi

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Niihama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for producing spherical alumina powder
- Patent number 8,815,205
- Issue date Aug 26, 2014
- Nippon Steel & Sumikin Materials Co., Ltd.
- Kiyoshi Sawano
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
α-alumina powder and heat-conductive sheet containing the same
- Patent number 6,569,519
- Issue date May 27, 2003
- Sumitomo Chemical Company, Limited
- Toshifumi Katsuda
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Translucent polycrystalline alumina and process for producing the same
- Patent number 5,382,556
- Issue date Jan 17, 1995
- Sumitomo Chemical Company, Limited
- Hiroshi Takahashi
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES

Patents Applicationslast 30 patents

Information Patent Application
METHOD FOR PRODUCING SPHERICAL ALUMINA POWDER
- Publication number 20110256051
- Publication date Oct 20, 2011
- Sumitomo Chemical Company, Limited
- Kiyoshi Sawano
- C01 - INORGANIC CHEMISTRY
Information Patent Application
Alpha-alumina powder and heat-conductive sheet containing the same
- Publication number 20020022127
- Publication date Feb 21, 2002
- Sumitomo Chemical Company, Limited
- Toshifumi Katsuda
- C01 - INORGANIC CHEMISTRY