Katsumi Koyanagi

Follow

Person

Nagaokakyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Switching current and a relay device employed therein
- Patent number 4,855,612
- Issue date Aug 8, 1989
- Omron Tateisi Electronics Co.
- Hirofumi Koga
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Switching circuit and a relay device employed to prevent arcing
- Patent number 4,772,809
- Issue date Sep 20, 1988
- Omron Tateisi Electronics Co.
- Hirofumi Koga
- H01 - BASIC ELECTRIC ELEMENTS