Description
Class F23R : GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
Subclass 3/28: Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
F23R 3/28
Sub-Class
Stats
- 1,679 US PATENTS IN FORCE
- 399 US APPLICATIONS PENDING
- 90 Total Patent Owners
- 2,550 TOTAL INVENTORS
Recent Patents
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 12264620 | Attenuated combustion for clean power and hydrogen capture | Apr 25, 24 | Apr 01, 25 | Nucor Corporation |
| 12264820 | control method | Sep 24, 24 | Apr 01, 25 | Tsinghua University |
| 12259134 | Hydrogen liquid oxygen combined cycle engine | Jun 27, 23 | Mar 25, 25 | RTX CORPORATION |
| 12259135 | Combustor with fuel and air mixing plenum | Apr 04, 23 | Mar 25, 25 | PRATT & WHITNEY CANADA CORP. |
| 12247522 | Burner assembly, gas turbine combustor, and gas turbine | Aug 12, 22 | Mar 11, 25 | MITSUBISHI HEAVY INDUSTRIES, LTD. |
| 12247740 | Fuel injector, combustor including the fuel injector, and gas turbine including the combustor | Jun 21, 21 | Mar 11, 25 | MITSUBISHI HEAVY INDUSTRIES, LTD. |
| 12247741 | Multitube pilot injector having a split airflow for a gas turbine engine | Nov 03, 22 | Mar 11, 25 | Power Systems Mfg., LLC |
| 12247742 | Jet nozzle, combustor, and gas turbine including same | Jun 05, 23 | Mar 11, 25 | DOOSAN ENERBILITY CO., LTD. |
| 12241414 | Single variable displacement fuel systems with fuel oil cooler bypass and gas generator fault accommodation | Dec 20, 23 | Mar 04, 25 | HAMILTON SUNDSTRAND CORPORATION |
| 12241419 | Fuel injectors assemblies with tangential flow component | Aug 25, 22 | Mar 04, 25 | Collins Engine Nozzles, Inc. |
| 12241628 | Combustor swirler with vanes incorporating open area | Sep 01, 23 | Mar 04, 25 | General Electric Company |
| 12241629 | Controlling soot | Aug 26, 22 | Mar 04, 25 | Rolls Royce plc |
| 12234988 | Fuel nozzle for hydrogen-based fuel operation | Apr 04, 24 | Feb 25, 25 | RTX CORPORATION |
| 12234989 | Central staged combustion chamber with self-excited sweeping oscillating fuel injection nozzles | Dec 15, 23 | Feb 25, 25 | AERO ENGINE ACADEMY OF CHINA |
| 12234990 | Gas turbine combustion system having an ammonia autothermal cracking device | Oct 03, 23 | Feb 25, 25 | IHI Corporation |
| 12228282 | Gas turbine fuel nozzle having an inner air passage and plural outer fuel passages | Jan 10, 24 | Feb 18, 25 | General Electric Company |
| 12228283 | Combustor apparatus | May 01, 24 | Feb 18, 25 | Rolls Royce plc |
| 12228284 | Nozzle tip with shielded core for a dual combustion systems | May 17, 21 | Feb 18, 25 | PRATT & WHITNEY CANADA CORP. |
| 12228285 | Combustor nozzle and gas turbine including the same | Jan 30, 23 | Feb 18, 25 | DOOSAN ENERBILITY CO., LTD. |
| 12228286 | Combustion section with a primary combustion chamber and a secondary combustion chamber | Sep 29, 23 | Feb 18, 25 | General Electric Company |
Recent Publications
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2025/0116,403 | FUEL NOZZLE HAVING INNER AND OUTER MIXING CHAMBERS FED WITH FUEL VIA FIRST AND SECOND HOLE PATTERNS | Oct 07, 23 | Apr 10, 25 | Not available |
| 2025/0116,233 | Fuel Nozzle/Swirler Assembly for a Gas Turbine Engine | Oct 05, 23 | Apr 10, 25 | Not available |
| 2025/0109,856 | COMBUSTOR FOR A TURBINE ENGINE | Dec 13, 24 | Apr 03, 25 | Not available |
| 2025/0109,853 | COMBUSTION SECTION WITH A PRIMARY COMBUSTOR AND A SET OF SECONDARY COMBUSTORS | Sep 28, 23 | Apr 03, 25 | Not available |
| 2025/0109,855 | A FUEL NOZZLE FOR A GAS TURBINE, COMBUSTOR INCLUDING THE FUEL NOZZLE, AND GAS TURBINE | Feb 02, 23 | Apr 03, 25 | Not available |
| 2025/0093,031 | GAS TURBINE ENGINE AND FUEL NOZZLE THEREFOR | Sep 18, 23 | Mar 20, 25 | Not available |
| 2025/0093,032 | GAS TURBINE ENGINE AND FUEL NOZZLE THEREFOR | Sep 18, 23 | Mar 20, 25 | Not available |
| 2025/0093,033 | COMBUSTOR AND GAS TURBINE | Jan 13, 23 | Mar 20, 25 | Not available |
| 2025/0092,831 | SWIRL VALVES | Sep 20, 23 | Mar 20, 25 | Collins Engine Nozzles, Inc. |
| 2025/0084,994 | PLASMA INJECTION MODULES | Nov 20, 24 | Mar 13, 25 | Not available |
| 2025/0084,791 | SYSTEM AND METHOD FOR CONDITIONING FUEL FOR AN AIR-BREATHING HYDROGEN ENGINE | Dec 21, 22 | Mar 13, 25 | ARIANEGROUP SAS; AIRBUS OPERATION (SAS); SAFRAN SA; |
| 2025/0067,436 | AMMONIA COMBUSTOR | Aug 25, 23 | Feb 27, 25 | Not available |
| 2025/0067,437 | FLEX FUEL COMBUSTOR | Aug 25, 23 | Feb 27, 25 | Not available |
| 2025/0067,438 | HEAT SHIELD FOR A GAS TURBINE ENGINE | Dec 12, 23 | Feb 27, 25 | Not available |
| 2025/0067,439 | COMBUSTOR INCLUDING A STEAM INJECTOR OPERABLY INJECTING STEAM INOT A TRAPPED VORTEX CAVITY | Aug 22, 23 | Feb 27, 25 | Not available |
| 2025/0059,918 | AIRCRAFT TURBOMACHINE COMPRISING A DEVICE FOR INHIBITING THE ACCUMULATION OF COKE IN A DUCT | Dec 21, 22 | Feb 20, 25 | SAFRAN HELICOPTER ENGINES |
| 2025/0044,194 | METHOD FOR ESTIMATING A DRIFT OF A TURBINE ENGINE FUEL PUMP | Dec 06, 22 | Feb 06, 25 | SAFRAN AIRCRAFT ENGINES |
| 2025/0035,068 | HIGH-POWER HYBRID-ELECTRIC PROPULSION SYSTEMS AND METHODS | Dec 02, 22 | Jan 30, 25 | ePropelled Inc. |
| 2025/0035,311 | FUEL NOZZLE AND SWIRLER | Aug 14, 24 | Jan 30, 25 | Not available |
| 2025/0027,649 | STAGED BLADE INJECTOR | Jul 16, 24 | Jan 23, 25 | Not available |
Top Owners in This Subclass
| Upgrade to the Professional Level to view Top Owners for this Subclass.Learn More |
|---|
Patents Issued To Date - By Filing Year
Average Time to Issuance
- 30 Months (last 2 years Issuances)
- 30 Months (last 5 years Issuances)