Doukai; Masami

Patent Applications and Registrations

Patent applications and USPTO patent grants for Doukai; Masami.The latest application filed is for "path protection method and layer-2 switch".

Company Profile

0.6.8

Doukai; Masami - Kawasaki JP

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Path protection method and layer-2 switch Grant 8,199,639 - Doukai , et al. June 12, 2	2012-06-12
Fault detection device Grant 7,957,267 - Sasagawa , et al. June 7, 2	2011-06-07
Apparatus and method for processing control packet in spanning tree protocol Grant 7,860,031 - Sasagawa , et al. December 28, 2	2010-12-28
Carrier network of virtual network system and communication node of carrier network Grant 7,633,889 - Higashitaniguchi , et al. December 15, 2	2009-12-15
Restoration and protection method and an apparatus thereof Grant 7,590,048 - Doukai September 15, 2	2009-09-15
Path protection method and layer-2 switch App 20070086333 - Doukai; Masami ; et al.	2007-04-19
WDM device, client device, network, system and method for allocating wavelength of WDM to a client signal Grant 7,120,357 - Doukai October 10, 2	2006-10-10
Bridge apparatus and control packet processing apparatus in a spanning tree protocol network App 20060203735 - Takatori; Kou ; et al.	2006-09-14
Communication apparatus App 20060198315 - Sasagawa; Yasushi ; et al.	2006-09-07
Fault detection device App 20060182036 - Sasagawa; Yasushi ; et al.	2006-08-17
Carrier network of virtual network system and communication node of carrier network App 20050163102 - Higashitaniguchi, Atsuko ; et al.	2005-07-28
WDM device, client device, network, system and method for allocating wavelength of WDM to a client signal App 20040208502 - Doukai, Masami	2004-10-21
Apparatus and method for processing control packet in spanning tree protocol App 20040179524 - Sasagawa, Yasushi ; et al.	2004-09-16
Restoration and protection method and an apparatus thereof App 20040114595 - Doukai, Masami	2004-06-17

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