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Roy C. Litz
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Freeland, MD, US
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Patents Grants
last 30 patents
Information
Patent Grant
High-speed optical transponder systems
Patent number
9,191,117
Issue date
Nov 17, 2015
Ciena Corporation
Stephen B. Alexander
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Remodulating channel selectors for WDM optical communication systems
Patent number
8,306,424
Issue date
Nov 6, 2012
Ciena Corporation
Stephen B. Alexander
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Remodulating channel selectors for WDM optical communication systems
Patent number
7,809,270
Issue date
Oct 5, 2010
CIENA Corporation
Stephen B. Alexander
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Remodulating channel selectors for WDM optical communication systems
Patent number
7,369,780
Issue date
May 6, 2008
CIENA Corporation
Stephen B. Alexander
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Remodulating channel selectors for WDM optical communication systems
Patent number
6,618,176
Issue date
Sep 9, 2003
CIENA Corporation
Stephen B. Alexander
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
System and method for shutting off an optical energy source in a co...
Patent number
6,344,915
Issue date
Feb 5, 2002
CIENA Corporation
Stephen B. Alexander
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Remodulating channel selectors for WDM optical communication systems
Patent number
6,233,077
Issue date
May 15, 2001
CIENA Corporation
Stephen B. Alexander
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
WDM Optical communication systems with remodulators and remodulatin...
Patent number
5,784,184
Issue date
Jul 21, 1998
CIENA Corporation
Stephen B. Alexander
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Remodulating channel selectors for WDM optical communication systems
Patent number
5,715,076
Issue date
Feb 3, 1998
CIENA Corporation
Stephen B. Alexander
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
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Patent Application
HIGH-SPEED OPTICAL TRANSPONDER SYSTEMS
Publication number
20110013911
Publication date
Jan 20, 2011
Stephen B. Alexander
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
REMODULATING CHANNEL SELECTORS FOR WDM OPTICAL COMMUNICATION SYSTEMS
Publication number
20100329682
Publication date
Dec 30, 2010
Stephen B. Alexander
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
REMODULATING CHANNEL SELECTORS FOR WDM OPTICAL COMMUNICATION SYSTEMS
Publication number
20090041471
Publication date
Feb 12, 2009
Stephen B. Alexander
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Remodulating channel selectors for WDM optical communication systems
Publication number
20040013433
Publication date
Jan 22, 2004
CIENA Corporation
Stephen B. Alexander
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Remodulating channel selectors for WDM optical communication systems
Publication number
20010013964
Publication date
Aug 16, 2001
Stephen B. Alexander
H04 - ELECTRIC COMMUNICATION TECHNIQUE