Yasuo Watanabe

Follow

Person

Okayama, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Dry process for the production of hexagonal-system ferrite
- Patent number 4,411,807
- Issue date Oct 25, 1983
- Dowa Mining Co., Ltd.
- Yasuo Watanabe
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Apparatus for production of spherical grain ferrite powder
- Patent number 4,352,717
- Issue date Oct 5, 1982
- Dowa Mining Co., Ltd.
- Yasuo Watanabe
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Process and apparatus for production of spherical grain ferrite powder
- Patent number 4,226,843
- Issue date Oct 7, 1980
- Dowa Mining Co., Ltd.
- Yasuo Watanabe
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for producing hexagonal-system ferrite powder
- Patent number 4,120,807
- Issue date Oct 17, 1978
- Dowa Mining Co., Ltd.
- Yasuo Watanabe
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Hexagonal-system ferrite powder, composite plastic-ferrite magnet c...
- Patent number 4,120,806
- Issue date Oct 17, 1978
- Dowa Mining Co., Ltd.
- Yasuo Watanabe
- C01 - INORGANIC CHEMISTRY