Pressure regulator
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Jan 23, 2007
Grant Date -
Nov 25, 2004
app pub date -
Mar 1, 2004
filing date -
Mar 3, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A main valve reduces an unregulated pressure of a high-pressure gas to a regulated pressure by being interlocked with a diaphragm, which receives the regulated pressure within a pressure regulating chamber and is displaced. A subsidiary valve is interlocked with the main valve through a plunger and reduces the unregulated pressure of the high-pressure gas to the regulated pressure. The subsidiary valve is located such that the force, which accompanies a pressure loss occurring at the subsidiary valve and which the subsidiary valve receives, cancels the force, which accompanies the pressure loss occurring at the main valve and acts upon the plunger. An adjustor adjusts a pressure loss value occurring at the subsidiary valve so as to be equal to the pressure loss value occurring at the main valve.
First Claim
all claims..Other Claims data not available
Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
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TOKAI CORPORATION | 1-48-3 SASAZUKA SHIBUYA-KU TOKYO |
International Classification(s)

- 2004 Application Filing Year
- G05D Class
- 729 Applications Filed
- 317 Patents Issued To-Date
- 43.49 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Nakamura, Yasuaki | Subashiri, Oyama-cho, Sunto-gun, Shizuoka-ken, JP | 73 | 655 |
# of filed Patents : 73 Total Citations : 655 |
Cited Art Landscape
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Patent Citation Ranking
- 2 Citation Count
- G05D Class
- 4.40 % this patent is cited more than
- 18 Age
Forward Cite Landscape
- No Forward Cites to Display

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 |
---|---|---|---|
Sep 24, 2008 | LAPS | LAPSE FOR FAILURE TO PAY MAINTENANCE FEES | |
Mar 31, 2008 | REMI | MAINTENANCE FEE REMINDER MAILED | |
Mar 02, 1999 | I | Issuance | |
Dec 06, 1998 | FEPP | FEE PAYMENT PROCEDURE | free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
Jun 13, 1997 | F | Filing | |
May 31, 1994 | PD | Priority Date |

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