Staged fuel and air injection in combustion systems of gas turbines
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Apr 17, 2018
Issued Date -
N/A
app pub date -
Dec 22, 2015
filing date -
Dec 22, 2015
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A gas turbine that includes a working fluid flowpath extending aftward from a forward injector in a combustor. The combustor may include an inner radial wall, an outer radial wall, and, therebetween, a flow annulus. A staged injector may intersect the flow annulus so to attain an injection point within the working fluid flowpath by which aftward and forward annulus sections are defined. Air directing structure may include an aftward intake section that corresponds to the aftward annulus section and a forward intake section that corresponds to the forward annulus section. The air directing structure may be configured to: direct air entering through the aftward intake section through the aftward annulus section in a forward direction to the staged injector; and direct air entering through the forward intake section through the forward annulus section in a forward direction to the forward injector.
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 | |
---|---|---|
GE INFRASTRUCTURE TECHNOLOGY LLC | 300 GARLINGTON ROAD GREENVILLE SC 29615 |
International Classification(s)

- 2015 Application Filing Year
- F23R Class
- 450 Applications Filed
- 328 Patents Issued To-Date
- 72.89 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Berry, Jonathan Dwight | Simpsonville, US | 143 | 2064 |
# of filed Patents : 143 Total Citations : 2064 | |||
Hughes, Michael John | Pittsburgh, US | 88 | 981 |
# of filed Patents : 88 Total Citations : 981 |
Cited Art Landscape
- No Cited Art to Display

Patent Citation Ranking
- 4 Citation Count
- F23R Class
- 12.28 % this patent is cited more than
- 7 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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7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Oct 17, 2025 |
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Oct 17, 2029 |
Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
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 |
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Date | Code | Event | Description |
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Dec 01, 2021 | MAFP | MAINTENANCE FEE PAYMENT | free format text: PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1551); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY year of fee payment: 4 |
Jun 05, 2018 | I | Issuance | |
May 16, 2018 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Jul 28, 2016 | P | Published | |
Feb 08, 2016 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:KRALIK, ROBERT;REEL/FRAME:037856/0237 Owner name: SCHALTBAU GMBH, GERMANY Effective Date: Feb 08, 2016 |
Jan 21, 2016 | F | Filing | |
Jan 22, 2015 | PD | Priority Date |

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