IDiyas

For the Inventor, By the Inventor

Tokyo, Japan

Tatsuya Shiragaki

USPTO Granted Patents = 16 

Average Co-Inventor Count = 1.6

ph-index = 11

Forward Citations = 423(Granted Patents)


Location History:

  • Minato-ku, JP (2009)
  • Tokyo, JP (1995 - 2014)

Company Filing History:

goldMedal16 out of 35,658 
 
Nec Corporation
 patents

Years Active: 1995-2014

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16 patents (USPTO):Explore Patents
1. 8886013 - Device and method for preventing unauthorized reproduction of content (2014-11-11),
2. 7515545 - Signal repeater and switching device, method of detecting connecting relation between signal repeater and switching device and communication system (2009-04-07),
3. 7280470 - Ring network for sharing protection resource by working communication paths (2007-10-09),
4. 7043662 - Communication device that performs automatic failure recovery and automatic failure recovery method (2006-05-09),
5. 6785473 - WDM network and WDM network device (2004-08-31),
6. 6657952 - Ring network for sharing protection resource by working communication paths (2003-12-02),
7. 6538779 - Optical signal monitoring method and apparatus (2003-03-25),
8. 6211983 - Optical communication network unit comprising an optical signal converting apparatus and/or an optical signal receiving apparatus (2001-04-03),
9. 6128115 - Optical switch device (2000-10-03),
10. 6125104 - Network node for switching quality detector to incoming signal specified (2000-09-26),
11. 6115517 - Optical communication network apparatus and optical switching network (2000-09-05),
12. 6023452 - Network failure restoration method with different recovery performances (2000-02-08),
13. 5757526 - Optical communication network and method for optically detecting a fault (1998-05-26),
14. 5663820 - Optical network using multiplexed payload and OAM signals (1997-09-02),
15. 5471332 - Hitless switching apparatus and method for optical network (1995-11-28),
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