Hirohiko Ohtsubo

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Patents Grantslast 30 patents

Information Patent Grant
Method for producing cubic boron nitride abrasive grains
- Patent number 7,404,832
- Issue date Jul 29, 2008
- Showa Denko K.K.
- Hirohiko Ohtsubo
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Method for producing cubic boron nitride
- Patent number 7,244,406
- Issue date Jul 17, 2007
- Showa Denko K.K.
- Hirohiko Ohtsubo
- B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES O...
Information Patent Grant
Cubic boron nitride, catalyst for synthesizing cubic boron nitride,...
- Patent number 7,214,359
- Issue date May 8, 2007
- Showa Denko K.K.
- Hirohiko Ohtsubo
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Metal-coated cubic boron nitride abrasive grain, production method...
- Patent number 7,097,678
- Issue date Aug 29, 2006
- Showa Denko K.K.
- Hirohiko Ohtsubo
- B24 - GRINDING POLISHING
Information Patent Grant
Method for growing diamond and cubic boron nitride crystals
- Patent number 6,627,168
- Issue date Sep 30, 2003
- Showa Denko Kabushiki Kaisha
- Hirohiko Ohtsubo
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
CBN abrasive-grains, method for producing the same, and grinding wheel
- Patent number 5,000,760
- Issue date Mar 19, 1991
- Showa Denka K.K.
- Hirohiko Ohtsubo
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES

Patents Applicationslast 30 patents

Information Patent Application
Method for producing cubic boron nitride
- Publication number 20050220690
- Publication date Oct 6, 2005
- Hirohiko Ohtsubo
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Application
Metal-coated cubic boron nitride abrasive grain, production method...
- Publication number 20050081454
- Publication date Apr 21, 2005
- Showa Denko K.K.
- Hirohiko Ohtsubo
- B24 - GRINDING POLISHING
Information Patent Application
Cubic boron nitride abrasive grain, production method therefor, and...
- Publication number 20050081456
- Publication date Apr 21, 2005
- Showa Denko K.K.
- Eiji Ihara
- B24 - GRINDING POLISHING
Information Patent Application
Cubic boron nitride, catalyst for synthesizing cubic boron nitride,...
- Publication number 20040265203
- Publication date Dec 30, 2004
- Showa Denko K.K.
- Hirohiko Ohtsubo
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Method for producing cubic boron nitride abrasive grains
- Publication number 20040182011
- Publication date Sep 23, 2004
- Hirohiko Ohtsubo
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES