Takashi Umegaki

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Line switching device
- Patent number 9,277,299
- Issue date Mar 1, 2016
- Fujitsu Limited
- Shigeo Tani
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Transmission apparatus and switching method
- Patent number 9,253,553
- Issue date Feb 2, 2016
- Fujitsu Limited
- Shigeo Tani
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Clock device
- Patent number 8,564,355
- Issue date Oct 22, 2013
- Fujitsu Limited
- Shigeo Tani
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Network apparatus that determines whether data is written into buff...
- Patent number 8,295,161
- Issue date Oct 23, 2012
- Fujitsu Limited
- Ryoji Azumi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Terminal relay device and relay method
- Patent number 7,443,843
- Issue date Oct 28, 2008
- Fujitsu Limited
- Hiroyuki Matsuo
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical terminal system having self-monitoring function
- Patent number 5,557,437
- Issue date Sep 17, 1996
- Fujitsu Limited
- Toshiharu Sakai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Disparity detection circuit for a 2-bit to 4-bit coded signal decoder
- Patent number 5,283,576
- Issue date Feb 1, 1994
- Fujitsu Limited
- Takashi Umegaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
TRANSMISSION APPARATUS AND SWITCHING METHOD
- Publication number 20130195453
- Publication date Aug 1, 2013
- Fujitsu Limited
- Shigeo TANI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
LINE SWITCHING DEVICE
- Publication number 20130094805
- Publication date Apr 18, 2013
- Fujitsu Limited
- Shigeo TANI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
CLOCK DEVICE
- Publication number 20110175653
- Publication date Jul 21, 2011
- Fujitsu Limited
- SHIGEO TANI
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
INTERFACE DEVICE, DEMULTIPLEXING METHOD, AND MULTIPLEXING METHOD
- Publication number 20110170864
- Publication date Jul 14, 2011
- Fujitsu Limited
- Shigeo TANI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
NETWORK APPARATUS
- Publication number 20100158514
- Publication date Jun 24, 2010
- FUJITSU LIMITED
- Ryoji AZUMI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Terminal relay device and relay method
- Publication number 20050195864
- Publication date Sep 8, 2005
- Hiroyuki Matsuo
- H04 - ELECTRIC COMMUNICATION TECHNIQUE