Crystal oscillator
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 30, 2016
Grant Date -
Apr 7, 2016
app pub date -
Dec 10, 2015
filing date -
Jun 27, 2013
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A crystal oscillator, including: a voltage stabilizing unit, a transconductance unit, a feedback resistor, a crystal resonator and at least two ground capacitors. The voltage stabilizing unit includes a current source and a first branch circuit including PMOS and NMOS connected in series, PMOS has its source connected to output of the current source, PMOS and NMOS have their gates connected to drains thereof, and NMOS has its source connected to ground. The transconductance unit includes a second branch circuit including PMOS and NMOS connected in series, PMOS has its source connected to output of the voltage stabilizing unit, PMOS and NMOS have their gates connected to input of the crystal resonator and one end of the resistor, and have their drains connected to output of the crystal resonator and another end of the resistor. The capacitors are connected to two ends of the crystal resonator respectively and ground.
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 | |
---|---|---|
SHANGHAI EASTSOFT MICROELECTRONICS CO LTD | 200233 3F BUILDING 12 FENGHUANG GARDEN NO 1515 GUMEI ROAD XUHUI DISTRICT SHANGHAI SHANGHAI CITY SHANGHAI CITY 200233 |
International Classification(s)

- 2015 Application Filing Year
- H03B Class
- 375 Applications Filed
- 331 Patents Issued To-Date
- 88.27 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Liu, Ruijin | Shanghai, CN | 4 | 12 |
# of filed Patents : 4 Total Citations : 12 | |||
Tao, Jingjing | Shanghai, CN | 4 | 19 |
# of filed Patents : 4 Total Citations : 19 | |||
Zhang, Xu | Shanghai, CN | 514 | 2234 |
# of filed Patents : 514 Total Citations : 2234 |
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Patent Citation Ranking
- 6 Citation Count
- H03B Class
- 13.72 % this patent is cited more than
- 9 Age
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
---|---|---|---|---|
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Feb 29, 2028 |
Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
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
Date | Code | Event | Description |
---|---|---|---|
Jan 31, 2024 | MAFP | MAINTENANCE FEE PAYMENT | free format text: PAYMENT OF MAINTENANCE FEE, 8TH YR, SMALL ENTITY (ORIGINAL EVENT CODE: M2552); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY year of fee payment: 8 |
Feb 21, 2020 | MAFP | MAINTENANCE FEE PAYMENT | free format text: PAYMENT OF MAINTENANCE FEE, 4TH YR, SMALL ENTITY (ORIGINAL EVENT CODE: M2551); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY year of fee payment: 4 |
Aug 30, 2016 | I | Issuance | |
Aug 10, 2016 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Apr 07, 2016 | P | Published | |
Dec 10, 2015 | F | Filing | |
Nov 03, 2015 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LIU, RUIJIN;ZHANG, XU;TAO, JINGJING;REEL/FRAME:037265/0738 Owner name: SHANGHAI EASTSOFT MICROELECTRONICS CO., LTD., CHIN Effective Date: Nov 03, 2015 |
Jun 27, 2013 | PD | Priority Date |

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