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Shoa-Kai Liu
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Richardson, TX, US
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Patents Grants
last 30 patents
Information
Patent Grant
Method and system for restoring coincident line and facility failures
Patent number
6,233,072
Issue date
May 15, 2001
MCI Communications Corporation
Shoa-Kai Liu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method of and system for diagnosing optical system failures
Patent number
6,215,565
Issue date
Apr 10, 2001
MCI Communications Corporation
Gary B. Davis
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method and system for detecting optical faults within the optical d...
Patent number
6,005,694
Issue date
Dec 21, 1999
MCI Worldcom, Inc.
Shoa-Kai Liu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Dual-band fiber optic amplification system using a single pump source
Patent number
5,978,130
Issue date
Nov 2, 1999
MCI Communications Corporation
John Fee
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Restoration systems for an optical telecommunications network
Patent number
5,914,798
Issue date
Jun 22, 1999
MCI Communications Corporation
Shoa-Kai Liu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Dynamically reconfigurable optical interface device using an optica...
Patent number
5,726,788
Issue date
Mar 10, 1998
MCI Corporation
John A. Fee
G02 - OPTICS
Patents Applications
last 30 patents
Information
Patent Application
Method and system for restoring coincident line and facility failures
Publication number
20010043560
Publication date
Nov 22, 2001
Shoa-Kai Liu
H04 - ELECTRIC COMMUNICATION TECHNIQUE