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John Wei-Fan Chou
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Montery Park, CA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Lamp driving topology
Patent number
6,559,606
Issue date
May 6, 2003
O2Micro International Limited
John Chou
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Integrated circuit for lamp heating and dimming control
Patent number
6,531,831
Issue date
Mar 11, 2003
O2Micro International Limited
John Chou
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Inverter operably controlled to reduce electromagnetic interference
Patent number
6,515,881
Issue date
Feb 4, 2003
O2Micro International Limited
John Chou
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Balanced power supply circuit for multiple cold-cathode fluorescent...
Patent number
6,104,146
Issue date
Aug 15, 2000
Micro International Limited
John Chou
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Circuit for energizing cold-cathode fluorescent lamps
Patent number
5,892,336
Issue date
Apr 6, 1999
Yung Lin
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Instant start for an electronic ballast preconditioner having an ac...
Patent number
5,834,906
Issue date
Nov 10, 1998
Philips Electronics North America Corporation
John Chou
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Lighting control for reducing energy consumption
Patent number
5,808,423
Issue date
Sep 15, 1998
Philips Electronics North America Corporation
Richard Qun Li
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Electronic ballast with lamp flash protection circuit
Patent number
5,739,645
Issue date
Apr 14, 1998
Philips Electronics North America Corporation
Yongping Xia
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Patents Applications
last 30 patents
Information
Patent Application
LAMP DRIVING TOPOLOGY
Publication number
20030076052
Publication date
Apr 24, 2003
02 Micro International Limited
John Chou
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Application
INVERTER OPERABLY CONTROLLED TO REDUCE ELECTROMAGNETIC INTERFERENCE
Publication number
20020181260
Publication date
Dec 5, 2002
John Chou
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Application
Integrated circuit for lamp heating and dimming control
Publication number
20020140371
Publication date
Oct 3, 2002
O2 Micro International Limited
John Chou
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC