Akio Ohta

Follow

Person

Kudamatsu, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Composite metal sintered article and method of making same
- Patent number 4,430,386
- Issue date Feb 7, 1984
- Toyo Kohan Co., Ltd.
- Tadao Watanabe
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Method for preparing a composite metal sintered article
- Patent number 4,261,745
- Issue date Apr 14, 1981
- Toyo Kohan Co., Ltd.
- Tadao Watanabe
- B22 - CASTING POWDER METALLURGY