F02C 3/34
Gas-turbine plants characterised by the use of combustion products as the working
Official title: with recycling of part of the working fluid, i.e. semi-closed cycles with combustion products in the closed part of the cycle
F02C3/34 (Gas-turbine plants characterised by the use of combustion products as the working) appears on 456 US grants and 539 published applications in this corpus.
Search patents in F02C- Granted patents
- 456
- Published applications
- 539
- Assignees
- 175
- Inventors
- 790
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 5 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 9 | 2 |
| 2002 | 5 | 8 |
| 2003 | 11 | 2 |
| 2004 | 4 | 14 |
| 2005 | 7 | 4 |
| 2006 | 1 | 5 |
| 2007 | 7 | 5 |
| 2008 | 2 | 6 |
| 2009 | 6 | 21 |
| 2010 | 1 | 21 |
| 2011 | 10 | 25 |
| 2012 | 14 | 35 |
| 2013 | 21 | 41 |
| 2014 | 16 | 52 |
| 2015 | 24 | 40 |
| 2016 | 31 | 31 |
| 2017 | 36 | 29 |
| 2018 | 43 | 27 |
| 2019 | 27 | 16 |
| 2020 | 30 | 26 |
| 2021 | 24 | 25 |
| 2022 | 20 | 20 |
| 2023 | 17 | 19 |
| 2024 | 21 | 31 |
| 2025 | 25 | 19 |
| 2026 | 13 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Dilute combustion of hydrogen in retrofitted gas turbine engines6 Oct 2026US 12,753,722 B2University of Florida Research Foundation, Inc.
- Semi-closed cycle chilling optimization for carbon capture system8 Sep 2026US 12,728,386 B1Enhanced Energy Group LLC
- Integrated carbon sequestration and power generation system and methods of use1 Sep 2026US 12,723,540 B2Arbor Energy and Resources Corporation
- High efficiency power production methods, assemblies, and systems14 Jul 2026US 12,680,454 B28 Rivers Capital, LLC
- Partial exhaust condensation regenerator7 Jul 2026US 12,674,414 B2Rtx Corporation
- High efficiency power production methods, assemblies, and systems1 Oct 2026US 2026/0298097 A18 Rivers Capital, LLC
- Partial exhaust condensation regenerator1 Oct 2026US 2026/0298138 A1Rtx Corporation
- Expander and thermodynamic cycle using the expander17 Sep 2026US 2026/0275871 A1Nuovo Pignone Tecnologie Srl
- Semi-closed cycle chilling optimization for carbon capture system10 Sep 2026US 2026/0264010 A1Enhanced Energy Group LLC
- Turbo-expander overspeed protection20 Aug 2026US 2026/0243203 A1NET Power LLC
Most cited
By later US patents
- Carbon dioxide power cycle257US 4,498,289 A1985
- Closed cycle gas turbine for gaseous production199US 4,434,613 AGeneral Electric Company · 1984
- Semi-closed Brayton cycle gas turbine power systems196US 6,910,335 B2Clean Energy Systems, Inc. · 2005
- Semi-closed brayton cycle gas turbine power systems191US 6,637,183 B2Clean Energy Systems, Inc. · 2003
- Partially-open gas turbine cycle providing high thermal efficiencies and ultra-low emissions178US 6,532,745 B12003