Keiichi Yamamoto

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Yamato, JP

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Patents Grantslast 30 patents

Information Patent Grant
High-speed signal transmission apparatus
- Patent number 7,969,751
- Issue date Jun 28, 2011
- Hitachi Cable, Ltd.
- Keiichi Yamamoto
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Semiconductor circuit, and computing device and communications devi...
- Patent number 7,902,860
- Issue date Mar 8, 2011
- Hitachi, Ltd.
- Keiichi Yamamoto
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Output buffer circuit, differential output buffer circuit, output b...
- Patent number 7,772,877
- Issue date Aug 10, 2010
- Hitachi, Ltd.
- Norio Chujo
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Level conversion circuit
- Patent number 7,649,381
- Issue date Jan 19, 2010
- Hitachi, Ltd.
- Hiroki Yamashita
- H03 - BASIC ELECTRONIC CIRCUITRY

Patents Applicationslast 30 patents

Information Patent Application
OUTPUT BUFFER CIRCUIT, DIFFERENTIAL OUTPUT BUFFER CIRCUIT, OUTPUT B...
- Publication number 20090179666
- Publication date Jul 16, 2009
- Norio Chujo
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Semiconductor Circuit, and Computing Device and Communications Devi...
- Publication number 20090085688
- Publication date Apr 2, 2009
- Keiichi YAMAMOTO
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Oscillation Circuit
- Publication number 20090033431
- Publication date Feb 5, 2009
- Hitachi, Ltd.
- Hiroki Yamashita
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
High-speed signal transmission apparatus
- Publication number 20090027867
- Publication date Jan 29, 2009
- Keiichi Yamamoto
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Level conversion circuit
- Publication number 20080157816
- Publication date Jul 3, 2008
- Hitachi, Ltd.
- Hiroki Yamashita
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
SIGNAL DELAY CIRCUIT AND DRIVER CIRCUIT, SIGNAL TRANSMISSION MODULE...
- Publication number 20080036512
- Publication date Feb 14, 2008
- Keiichi Yamamoto
- H03 - BASIC ELECTRONIC CIRCUITRY