F01K 23/12
The engines being mechanically coupled
Official title: the engines being mechanically coupled (F01K23/02 takes precedence)
F01K23/12 (The engines being mechanically coupled) appears on 159 US grants and 172 published applications in this corpus.
Search patents in F01K- Granted patents
- 159
- Published applications
- 172
- Assignees
- 90
- Inventors
- 448
- Latest grant
- 10 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 4 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 2 | 3 |
| 2005 | 1 | 3 |
| 2006 | 3 | 1 |
| 2007 | 0 | 6 |
| 2008 | 0 | 2 |
| 2009 | 6 | 3 |
| 2010 | 3 | 5 |
| 2011 | 1 | 8 |
| 2012 | 4 | 8 |
| 2013 | 6 | 9 |
| 2014 | 7 | 22 |
| 2015 | 5 | 15 |
| 2016 | 9 | 14 |
| 2017 | 9 | 14 |
| 2018 | 12 | 11 |
| 2019 | 12 | 14 |
| 2020 | 14 | 6 |
| 2021 | 9 | 9 |
| 2022 | 6 | 6 |
| 2023 | 6 | 5 |
| 2024 | 6 | 5 |
| 2025 | 1 | 0 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Steam turbine bypass for increased water heat absorption capacity steam injected turbine engine10 Feb 2026US 12,546,250 B2Rtx Corporation
- Oxy-combustion combined cycle power plants27 Jan 2026US 12,535,018 B2General Electric Technology GmbH
- Turbine assembly18 Mar 2025US 12,252,994 B2Hochschule Darmstadt, University of Applied Science
- Facility for generating mechanical energy by means of a combined power cycle26 Nov 2024US 12,152,508 B2
- System for utilizing a thermomechanical cycle to drive a compressor15 Oct 2024US 12,116,908 B2Innio Waukesha Gas Engines Inc.
- Peak load and frequency regulation system for thermal power unit25 Jun 2026US 2026/0176987 A1Xi'an Thermal Power Research Institute Co., Ltd.
- Multi-stage power generation using byproducts for enhanced generation5 Mar 2026US 2026/0063057 A1BJ Energy Solutions, LLC
- Oxy-combustion combined cycle power plants7 Nov 2024US 2024/0369018 A1General Electric Technology GmbH
- Steam turbine bypass for increased water heat absorption capacity steam injected turbine engine15 Aug 2024US 2024/0271548 A1Raytheon Technologies Corporation
- On-demand hydrogen for power generation16 May 2024US 2024/0159170 A1Siemens Energy Global GmbH & Co. KG
Most cited
By later US patents
- Fuel regenerated non-polluting internal combustion engine97US 4,099,489 A1978
- Heat engine system having a selectively configurable working fluid circuit82US 9,874,112 B2Echogen Power Systems, LLC · 2018
- Heat engine systems with high net power supercritical carbon dioxide circuits76US 10,934,895 B2Echogen Power Systems, LLC · 2021
- Method and means for peaking or peak power shaving65US 4,590,384 AOrmat Turbines, Ltd. · 1986
- Heat engine system with a supercritical working fluid and processes thereof61US 9,118,226 B2Echogen Power Systems, LLC · 2015