Joji Oka

Follow

Person

Tokyo, JA

People

Patents Grantslast 30 patents

Information Patent Grant
Weldable coated steel sheet
- Patent number 4,079,163
- Issue date Mar 14, 1978
- Nippon Steel Corporation
- Tadashi Tanaka
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Horizontal rectilinear type metal-electroplating method
- Patent number 3,975,242
- Issue date Aug 17, 1976
- Nippon Steel Corporation
- Shozo Matsuda
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Grant
Aqueous solution and method for surface treatment of metals
- Patent number 3,935,035
- Issue date Jan 27, 1976
- Nippon Steel Corporation
- Tadashi Tanaka
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...