Seiji Koyama

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Yamato-shi, Kanagawa-ken, JP

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Patents Grantslast 30 patents

Information Patent Grant
Electronic device for cooling interior of housing
- Patent number 7,480,141
- Issue date Jan 20, 2009
- International Business Machines Corporation
- Hiroyuki Takenoshita
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Electronic equipment including an apparatus for cooling interior of...
- Patent number 7,301,767
- Issue date Nov 27, 2007
- International Business Machines Corporation
- Hiroyuki Takenoshita
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Integrator with output-compensating capability
- Patent number 5,748,023
- Issue date May 5, 1998
- Martin Hassner
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
DAC with feedback control for current source bias during non-displa...
- Patent number 5,703,582
- Issue date Dec 30, 1997
- International Business Machines Corporation
- Seiji Koyama
- H03 - BASIC ELECTRONIC CIRCUITRY

Patents Applicationslast 30 patents

Information Patent Application
Electronic Equipment Including an Apparatus for Cooling Interior of...
- Publication number 20070291451
- Publication date Dec 20, 2007
- International Business Machines Corporation
- Hiroyuki Takenoshita
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Electronic equipment including an apparatus for cooling interior of...
- Publication number 20060126289
- Publication date Jun 15, 2006
- International Business Machines Corporation
- Hiroyuki Takenoshita
- G06 - COMPUTING CALCULATING COUNTING