Maki Narita

Follow

Person

Shiga, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Fabrication method of cathode member and electronic tube equipped t...
- Patent number 5,881,355
- Issue date Mar 9, 1999
- NEC Corporation
- Toshikazu Sugimura
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Cathode member and electron tube having the cathode member mounted...
- Patent number 5,757,115
- Issue date May 26, 1998
- NEC Corporation
- Maki Narita
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Cathode impregnated by an electron emissive substance comprising (P...
- Patent number 5,306,189
- Issue date Apr 26, 1994
- NEC Corporation
- Toshikazu Sugimura
- H01 - BASIC ELECTRIC ELEMENTS