F02C 1/04
The working fluid being heated indirectly
Official title: the working fluid being heated indirectly {(in a fluidised-bed combustor F02C3/205)}
F02C1/04 (The working fluid being heated indirectly) appears on 841 US grants and 868 published applications in this corpus.
Search patents in F02C- Granted patents
- 841
- Published applications
- 868
- Assignees
- 425
- Inventors
- 1,623
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 10 | 0 |
| 1978 | 11 | 0 |
| 1979 | 7 | 0 |
| 1980 | 10 | 0 |
| 1981 | 8 | 0 |
| 1982 | 6 | 0 |
| 1983 | 9 | 0 |
| 1984 | 9 | 0 |
| 1985 | 4 | 0 |
| 1986 | 2 | 0 |
| 1987 | 4 | 0 |
| 1988 | 4 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 0 | 0 |
| 1992 | 9 | 0 |
| 1993 | 5 | 0 |
| 1994 | 2 | 0 |
| 1995 | 9 | 0 |
| 1996 | 5 | 0 |
| 1997 | 11 | 0 |
| 1998 | 6 | 0 |
| 1999 | 9 | 0 |
| 2000 | 3 | 0 |
| 2001 | 12 | 3 |
| 2002 | 5 | 12 |
| 2003 | 12 | 13 |
| 2004 | 15 | 19 |
| 2005 | 9 | 15 |
| 2006 | 12 | 21 |
| 2007 | 8 | 15 |
| 2008 | 8 | 27 |
| 2009 | 14 | 23 |
| 2010 | 10 | 31 |
| 2011 | 13 | 36 |
| 2012 | 17 | 34 |
| 2013 | 19 | 45 |
| 2014 | 27 | 43 |
| 2015 | 18 | 52 |
| 2016 | 36 | 40 |
| 2017 | 37 | 31 |
| 2018 | 46 | 44 |
| 2019 | 48 | 51 |
| 2020 | 44 | 46 |
| 2021 | 59 | 52 |
| 2022 | 55 | 57 |
| 2023 | 49 | 53 |
| 2024 | 51 | 48 |
| 2025 | 38 | 33 |
| 2026 | 22 | 24 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Thermodynamic cycle system with thermal plant integration1 Sep 2026US 12,723,542 B2Malta Inc.
- Cryogenic fuel semi-closed recirculating bottoming cycle25 Aug 2026US 12,716,388 B2Rtx Corporation
- Concentrated solar energy collection, thermal storage, and power generation systems and methods with optional supplemental fuel production25 Aug 2026US 12,716,618 B2247Solar Inc.
- System for energy storage, compression and recovery30 Jun 2026US 12,669,083 B2Nova Nexus, LLC
- Partial exhaust condensation with cryogenic assisted bottoming cycle16 Jun 2026US 12,655,790 B2Rtx Corporation
- Closed brayton cycle shutdown control with chargeable fluid reservoir for cooling electrical components24 Sep 2026US 2026/0286885 A1Rolls-Royce North American Technologies Inc.
- Power plant10 Sep 2026US 2026/0266217 A1Energy Dome S.P.A.
- System for recovering energy3 Sep 2026US 2026/0258752 A1Primetals Technologies Germany GmbH
- Compressed Air Energy Storage Device13 Aug 2026US 2026/0235071 A1Hitachi Industrial Equipment Systems Co., Ltd.
- A system and a method for mixing a recirculated exhaust gas stream with air to obtain a gas mixture to be fed to a gas turbine30 Jul 2026US 2026/0218651 A1Nuovo Pignone Tecnologie Srl
Most cited
By later US patents
- Carbon dioxide power cycle257US 4,498,289 A1985
- 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
- Semi-closed brayton cycle gas turbine power systems169US 6,622,470 B2Clean Energy Systems, Inc. · 2003