Current control systems with current feedbacks
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Jul 10, 2012
Grant Date -
Dec 23, 2010
app pub date -
Jun 18, 2009
filing date -
Jun 18, 2009
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A current control system includes a first switch, a second switch, and a controller. The second switch is coupled in parallel with the first switch and operable for providing a feedback signal indicative of a current flowing through the first switch. The feedback signal is determined by a width-to-length ratio of the first switch and a width-to-length ratio of the second switch. In addition, the controller is coupled to the first and second switches and operable for adjusting the current according to the feedback signal.
First Claim
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Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
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O2MICRO INTERNATIONAL LIMITED | FRAND CAYMAN |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Lu, Chun | San Jose, US | 65 | 521 |
# of filed Patents : 65 Total Citations : 521 | |||
Luo, Luyang | Chengdu, CN | 10 | 104 |
# of filed Patents : 10 Total Citations : 104 | |||
Shi, Feng | Chengdu, CN | 154 | 802 |
# of filed Patents : 154 Total Citations : 802 | |||
Su, Xinhe | Chengdu, CN | 10 | 345 |
# of filed Patents : 10 Total Citations : 345 |
Cited Art Landscape
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Patent Citation Ranking
- 5 Citation Count
- G05F Class
- 3.56 % this patent is cited more than
- 13 Age
Forward Cite Landscape
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
Full Text

Legal Events
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Sep 02, 2019 | LAPS | LAPSE FOR FAILURE TO PAY MAINTENANCE FEES | free format text: PATENT EXPIRED FOR FAILURE TO PAY MAINTENANCE FEES (ORIGINAL EVENT CODE: EXP.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
Sep 02, 2019 | STCH | INFORMATION ON STATUS: PATENT DISCONTINUATION | free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
Jul 31, 2019 | FP | LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE | Effective Date: Jul 31, 2019 |
Mar 18, 2019 | FEPP | FEE PAYMENT PROCEDURE | free format text: MAINTENANCE FEE REMINDER MAILED (ORIGINAL EVENT CODE: REM.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
Feb 02, 2015 | FPAY | FEE PAYMENT | year of fee payment: 8 |
Jan 24, 2011 | FPAY | FEE PAYMENT | year of fee payment: 4 |
Jul 31, 2007 | I | Issuance | |
Jul 11, 2007 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Apr 20, 2005 | F | Filing | |
Apr 15, 2005 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:NEWMAN, KENT DAVID;CROCKER, TODD WILLIAM;REEL/FRAME:016492/0388 Owner name: UNIDEN AMERICAN CORPOATION, TEXAS Effective Date: Apr 15, 2005 |
Jul 26, 2002 | PD | Priority Date |

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