Seiji Kitayama

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Kawasaki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Gateway digital loop carrier device
- Patent number 7,154,897
- Issue date Dec 26, 2006
- Fujitsu Limited
- Seiji Kitayama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Subscriber digital transmission system
- Patent number 5,453,989
- Issue date Sep 26, 1995
- Fujitsu Limited
- Seiji Kitayama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Digital transmission apparatus for subscribers having switching fun...
- Patent number 5,452,286
- Issue date Sep 19, 1995
- Fujitsu Limited
- Seiji Kitayama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Gateway digital loop carrier device
- Publication number 20070071020
- Publication date Mar 29, 2007
- Seiji Kitayama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Communication apparatus
- Publication number 20040167978
- Publication date Aug 26, 2004
- Seiji Kitayama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Gateway digital loop carrier device
- Publication number 20020164009
- Publication date Nov 7, 2002
- Seiji Kitayama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE