Methods and systems for reducing pressure of natural gas and methods and systems of delivering natural gas
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Dec 24, 2013
Grant Date -
Mar 10, 2011
app pub date -
Sep 8, 2009
filing date -
Sep 8, 2009
priority date (Note) -
In Force
status (Latency Note)
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Importance

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Abstract
Methods and systems for reducing a pressure of compressed natural gas and for delivering natural gas are disclosed. A regulator comprising a vortex tube may be used to reduce the pressure of compressed natural gas while a temperature thereof is also reduced. The temperature reduction associated with a pressure drop in the compressed natural gas is achieved by throttling the gas at constant enthalpy from 3,000 PSIG to 150 PSIG through the regulator. At least one heat exchanger may be utilized to increase the temperature of the compressed natural gas to a temperature suitable for injection delivery. A pressure-reducing regulator may be used to further reduce a pressure of the gas to about 45 PSIG for delivery to an end-user.
First Claim
all claims..Other Claims data not available
Family
- No Family data available.
- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
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QUESTAR GAS COMPANY | 180 E 100 SOUTH SALT LAKE CITY UT 84145-0360 |
International Classification(s)

- 2009 Application Filing Year
- F25B Class
- 588 Applications Filed
- 350 Patents Issued To-Date
- 59.53 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Bayliff, Todd Allan | Salt Lake City, US | 3 | 40 |
# of filed Patents : 3 Total Citations : 40 | |||
Gill, Michael Lowell | Midvale, US | 3 | 40 |
# of filed Patents : 3 Total Citations : 40 | |||
Kiser,, II Richard Joseph | Salt Lake City, US | 3 | 40 |
# of filed Patents : 3 Total Citations : 40 | |||
Mettmann, Lee R | West Jordan, US | 3 | 40 |
# of filed Patents : 3 Total Citations : 40 | |||
Pace, Kelly D | Kaysville, US | 3 | 40 |
# of filed Patents : 3 Total Citations : 40 | |||
Sorensen, Troy David | Bluffdale, US | 3 | 40 |
# of filed Patents : 3 Total Citations : 40 |
Cited Art Landscape
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Patent Citation Ranking
- 9 Citation Count
- F25B Class
- 3.22 % this patent is cited more than
- 12 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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11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jun 24, 2025 |
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 |
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Apr 01, 2025 | MAFP | MAINTENANCE FEE PAYMENT | free format text: PAYMENT OF MAINTENANCE FEE, 12TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1553); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY year of fee payment: 12 |
Jun 01, 2021 | MAFP | MAINTENANCE FEE PAYMENT | free format text: PAYMENT OF MAINTENANCE FEE, 8TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1552); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY year of fee payment: 8 |
Nov 07, 2017 | FEPP | FEE PAYMENT PROCEDURE | free format text: SURCHARGE FOR LATE PAYMENT, LARGE ENTITY (ORIGINAL EVENT CODE: M1554) |
Nov 07, 2017 | MAFP | MAINTENANCE FEE PAYMENT | free format text: PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1551) year of fee payment: 4 |
Aug 04, 2017 | REMI | MAINTENANCE FEE REMINDER MAILED | |
Dec 24, 2013 | I | Issuance | |
Dec 04, 2013 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Mar 10, 2011 | P | Published | |
Sep 08, 2009 | F | Filing | |
Sep 08, 2009 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BAYLIFF, TODD ALLAN;SORENSEN, TROY DAVID;GILL, MICHAEL LOWELL;AND OTHERS;SIGNING DATES FROM 20090902 TO 20090904;REEL/FRAME:023203/0593 Owner name: QUESTAR GAS COMPANY, UTAH |

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