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Ramon C.W. Chea JR.
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San Jose, CA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Method and apparatus for generating an audible tone in DSL environment
Patent number
6,741,675
Issue date
May 25, 2004
Turnstone Systems, Inc.
Ramon C. W. Chea
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Protection of double end exposed systems
Patent number
6,700,770
Issue date
Mar 2, 2004
Turnstone Systems, Inc.
Ramon C. W. Chea
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Circuit topology for protecting vulnerable micro electro-mechanical...
Patent number
6,683,768
Issue date
Jan 27, 2004
Turnstone Systems, Inc.
Ramon C. W. Chea
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Systems and methods for protecting vulnerable micro electro-mechani...
Patent number
6,671,149
Issue date
Dec 30, 2003
Turnstone Systems, Inc.
Ramon C. W. Chea
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Voice over DSL method and system for supporting a lifeline
Patent number
6,574,313
Issue date
Jun 3, 2003
Turnstone Systems, Inc.
Ramon C. W. Chea
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Remotely actuated splittler bypass system and method
Patent number
6,574,309
Issue date
Jun 3, 2003
Turnstone Systems, Inc.
Ramon C. W. Chea
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Enabling and powering of remotely actuated bypass splitters
Patent number
6,553,105
Issue date
Apr 22, 2003
Turnstone Systems, Inc.
Ramon C. W. Chea
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method and system for supporting a lifeline associated with voice o...
Patent number
6,546,089
Issue date
Apr 8, 2003
Turnstone Systems, Inc.
Ramon C. W. Chea
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Structure and circuit topology for a remotely actuated bypass splitter
Patent number
6,480,575
Issue date
Nov 12, 2002
Turnstone Systems, Inc.
Ramon C. W. Chea
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method and apparatus for detecting and locating a fault in a teleco...
Patent number
6,453,016
Issue date
Sep 17, 2002
Turnstone Systems, Inc.
Ramon C. W. Chea
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Remotely addressable maintenance unit
Patent number
6,343,114
Issue date
Jan 29, 2002
Turnstone Systems, Inc.
Ramon C. W. Chea
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Battery injection and loop supervision for DSL environment
Patent number
6,292,540
Issue date
Sep 18, 2001
Turnstone Systems, Inc.
Ramon C. W. Chea
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
Protection of double end exposed systems
Publication number
20040150936
Publication date
Aug 5, 2004
Ramon C.W. Chea
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Protection of double end exposed systems
Publication number
20030179527
Publication date
Sep 25, 2003
Ramon C.W. Chea
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Method and apparatus for generating an audible tone in DSL environment
Publication number
20030179859
Publication date
Sep 25, 2003
Turnstone Systems, Inc.
Ramon C.W. Chea
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Enabling and powering of remotely actuated bypass splitters
Publication number
20020131568
Publication date
Sep 19, 2002
Ramon C.W. Chea
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Structure and circuit topology for a remotely actuated bypass splitter
Publication number
20020122539
Publication date
Sep 5, 2002
Ramon C.W. Chea
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Circuit topology for protecting vulnerable micro electro-mechanical...
Publication number
20020089804
Publication date
Jul 11, 2002
Ramon C.W. Chea
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Method and apparatus for detecting and locating a fault in a teleco...
Publication number
20020021787
Publication date
Feb 21, 2002
Turnstone Systems, Inc.
Ramon C.W. Chea
H04 - ELECTRIC COMMUNICATION TECHNIQUE