Toyohiko Kumakura

Follow

Person

Ibaraki, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Wiring board, semiconductor device, electronic device, and circuit...
- Patent number 6,855,893
- Issue date Feb 15, 2005
- Hitachi Cable Ltd.
- Toyohiko Kumakura
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Semiconductor device and electronic device
- Patent number 6,114,751
- Issue date Sep 5, 2000
- Hitachi Cable, Ltd.
- Toyohiko Kumakura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor device, interposer for semiconductor device
- Patent number 6,031,292
- Issue date Feb 29, 2000
- Hitachi Cable, Ltd.
- Gen Murakami
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Interposer for semiconductor device
- Patent number 5,866,948
- Issue date Feb 2, 1999
- Hitachi Cable, Ltd.
- Gen Murakami
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Wiring board, semiconductor device, electronic device, and circuit...
- Publication number 20040211591
- Publication date Oct 28, 2004
- Hitachi Cable Ltd.
- Toyohiko Kumakura
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR