Hisashi Watanabe

Person

Ibaraki, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Alumina sintered body and process for producing the same
- Patent number 6,814,917
- Issue date Nov 9, 2004
- Sumitomo Chemical Company, Limited
- Hisashi Watanabe
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Method for producing α-alumina powder
- Patent number 6,524,549
- Issue date Feb 25, 2003
- Sumitomo Chemical Co., Ltd.
- Masahide Mohri
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for producing α-alumina
- Patent number 6,521,203
- Issue date Feb 18, 2003
- Sumitomo Chemical Co., Ltd.
- Masahide Mohri
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Translucent alumina sintered body and a process for producing the same
- Patent number 6,482,761
- Issue date Nov 19, 2002
- Sumitomo Chemical Company, Limited
- Hisashi Watanabe
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Translucent alumina sintered body and production thereof
- Patent number 6,306,788
- Issue date Oct 23, 2001
- Sumitomo Chemical Company, Limited
- Hisashi Watanabe
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Metal oxide powder and method for the production of the same
- Patent number 6,303,091
- Issue date Oct 16, 2001
- Sumitomo Chemical Company, Limited
- Masahide Mohri
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
.alpha.-alumina
- Patent number 6,165,437
- Issue date Dec 26, 2000
- Sumitomo Chemical Co., Ltd.
- Masahide Mohri
- C30 - CRYSTAL GROWTH
Information Patent Grant
.alpha.-alumina powder and process for producing the same
- Patent number 6,159,441
- Issue date Dec 12, 2000
- Sumitomo Chemical Company, Limited
- Masahide Mohri
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Method for producing alpha-alumina powder
- Patent number 6,106,800
- Issue date Aug 22, 2000
- Sumitomo Chemical Co., Ltd.
- Masahide Mohri
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
.alpha.-alumina powder and process for producing the same
- Patent number 5,935,550
- Issue date Aug 10, 1999
- Sumitomo Chemical Company, Limited
- Masahide Mohri
- C01 - INORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
Metal oxide powder and method for the production of the same
- Publication number 20040219087
- Publication date Nov 4, 2004
- Masahide Mohri
- C01 - INORGANIC CHEMISTRY

Hisashi Watanabe

Person

Patents Grantslast 30 patents

Alumina sintered body and process for producing the same

Method for producing &#x03B1;-alumina powder

Process for producing &#x03B1;-alumina

Translucent alumina sintered body and a process for producing the same

Translucent alumina sintered body and production thereof

Metal oxide powder and method for the production of the same

.alpha.-alumina

.alpha.-alumina powder and process for producing the same

Method for producing alpha-alumina powder

.alpha.-alumina powder and process for producing the same

Patents Applicationslast 30 patents

Metal oxide powder and method for the production of the same

Method for producing α-alumina powder

Process for producing α-alumina