Process quantity measurement method and apparatus of engine output
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Jun 15, 2010
Grant Date -
May 8, 2008
app pub date -
Nov 14, 2005
filing date -
Jan 11, 2005
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process quantity measurement method with which an engine output is accurately measured in a relatively simple manner. Torque of an engine is measured based on the amount of torsion of the output shaft of the engine, and an engine output is obtained based on the measured torque. On the other hand, an engine output is calculated based on input and output heat quantity, and a difference between the engine output based on the torque and the engine output based on the input and output heat quantity is obtained in advance. When the engine is operated, the previously obtained difference is added to the engine output that is based on the calculated input and output heat quantity to obtain the engine output.
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 | |
---|---|---|
TOKYO ELECTRIC POWER COMPANY INCORPORATED THE | 1-3 UCHISAIWAI-CHO 1-CHOME CHIYODA-KU TOKYO |
International Classification(s)

- 2005 Application Filing Year
- G01M Class
- 736 Applications Filed
- 351 Patents Issued To-Date
- 47.70 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Okada, Junichi | Tokyo, JP | 65 | 567 |
# of filed Patents : 65 Total Citations : 567 | |||
Umezawa, Shuichi | Tokyo, JP | 7 | 49 |
# of filed Patents : 7 Total Citations : 49 |
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Patent Citation Ranking
- 1 Citation Count
- G01M Class
- 2.81 % this patent is cited more than
- 15 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
Date | Code | Event | Description |
---|---|---|---|
Jun 15, 2018 | FP | LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE | Effective Date: Jun 15, 2018 |
Jul 14, 2014 | STCH | INFORMATION ON STATUS: PATENT DISCONTINUATION | free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
Jun 15, 2014 | FP | LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE | Effective Date: Jun 15, 2014 |
Jun 15, 2014 | LAPS | LAPSE FOR FAILURE TO PAY MAINTENANCE FEES | |
Jan 24, 2014 | REMI | MAINTENANCE FEE REMINDER MAILED | |
Jun 15, 2010 | I | Issuance | |
May 08, 2008 | P | Published | |
Jul 10, 2007 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:UMEZAWA, SHUICHI;OKADA, JUNICHI;REEL/FRAME:019582/0528;SIGNING DATES FROM 20070620 TO 20070621 Owner name: TOKYO ELECTRIC POWER COMPANY, INCORPORATED, THE, J free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:UMEZAWA, SHUICHI;OKADA, JUNICHI;SIGNING DATES FROM 20070620 TO 20070621;REEL/FRAME:019582/0528 Owner name: TOKYO ELECTRIC POWER COMPANY, INCORPORATED, THE,JA |
Nov 14, 2005 | F | Filing | |
Jan 11, 2005 | PD | Priority Date |

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