Seiji Isoyama

Follow

Person

Okayama, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Permanent magnet alloy having improved resistance
- Patent number 5,269,855
- Issue date Dec 14, 1993
- Dowa Mining Co., Ltd.
- Toshio Ueda
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Process for production of permanent magnet alloy having improved re...
- Patent number 5,183,630
- Issue date Feb 2, 1993
- Dowa Mining Co., Ltd.
- Toshio Ueda
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Permanent magnet alloy having improved resistance to oxidation and...
- Patent number 5,147,473
- Issue date Sep 15, 1992
- Dowa Mining Co., Ltd.
- Toshio Ueda
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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