Osamu Hirai

Person

Hitachi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Hollow carbon fiber and production method
- Patent number 7,273,652
- Issue date Sep 25, 2007
- Hitachi Chemical Company, Ltd.
- Shinji Takeda
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Hollow carbon fiber and production method
- Patent number 6,743,500
- Issue date Jun 1, 2004
- Hitachi Chemical Company, Ltd.
- Shinji Takeda
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Hollow carbon fiber and production method
- Patent number 6,641,792
- Issue date Nov 4, 2003
- Hitachi Chemical Company, Ltd.
- Shinji Takeda
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Purification of liquid crystals and liquid crystal composition
- Patent number 5,540,857
- Issue date Jul 30, 1996
- Hitachi Chemical Co., Ltd.
- Osamu Hirai
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Purification of liquid crystals and liquid crystal composition
- Patent number 5,422,034
- Issue date Jun 6, 1995
- Hitachi Chemical Company, Ltd.
- Osamu Hirai
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Liquid chromatographic column packing material
- Patent number 4,505,818
- Issue date Mar 19, 1985
- Hitachi Chemical Co., Ltd.
- Yoshiyuki Mukoyama
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Column packing material and production thereof
- Patent number 4,486,308
- Issue date Dec 4, 1984
- Hitachi Chemical Company, Ltd.
- Osamu Hirai
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Process for producing particulate polymer having imide groups
- Patent number 4,427,822
- Issue date Jan 24, 1984
- Hitachi Chemical Co., Ltd.
- Hiroshi Nishizawa
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Patents Applicationslast 30 patents

Information Patent Application
Hollow carbon fiber and production method
- Publication number 20030039830
- Publication date Feb 27, 2003
- Shinji Takeda
- B82 - NANO-TECHNOLOGY
Information Patent Application
Hollow carbon fiber and production method
- Publication number 20030039829
- Publication date Feb 27, 2003
- Shinji Takeda
- B82 - NANO-TECHNOLOGY
Information Patent Application
Hollow carbon fiber and production method
- Publication number 20030026980
- Publication date Feb 6, 2003
- Shinji Takeda
- B82 - NANO-TECHNOLOGY

Osamu Hirai

Person

Patents Grantslast 30 patents

Hollow carbon fiber and production method

Hollow carbon fiber and production method

Hollow carbon fiber and production method

Purification of liquid crystals and liquid crystal composition

Purification of liquid crystals and liquid crystal composition

Liquid chromatographic column packing material

Column packing material and production thereof

Process for producing particulate polymer having imide groups

Patents Applicationslast 30 patents

Hollow carbon fiber and production method

Hollow carbon fiber and production method

Hollow carbon fiber and production method