Keiichi Maruta

Follow

Person

Chiba, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Composite alloy steel powder and sintered alloy steel
- Patent number 4,954,171
- Issue date Sep 4, 1990
- Kawasaki Steel Corp.
- Shigeaki Takajo
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...