F01K 7/02
The engines being of multiple-expansion type
Official title: the engines being of multiple-expansion type (the engines being only of turbine type F01K7/16; the engines using steam of critical or overcritical pressure F01K7/32; the engines being of extraction or non-condensing type F01K7/34)
F01K7/02 (The engines being of multiple-expansion type) appears on 74 US grants and 105 published applications in this corpus.
Search patents in F01K- Granted patents
- 74
- Published applications
- 105
- Assignees
- 50
- Inventors
- 188
- Latest grant
- 17 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 4 |
| 2011 | 0 | 7 |
| 2012 | 0 | 5 |
| 2013 | 4 | 12 |
| 2014 | 8 | 12 |
| 2015 | 7 | 11 |
| 2016 | 8 | 2 |
| 2017 | 10 | 9 |
| 2018 | 5 | 9 |
| 2019 | 6 | 9 |
| 2020 | 8 | 4 |
| 2021 | 4 | 7 |
| 2022 | 2 | 10 |
| 2023 | 7 | 3 |
| 2024 | 2 | 0 |
| 2025 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Process and system for converting waste plastic into power17 Mar 2026US 12,577,480 B2University of South Africa
- Method and device for expanding a fluid19 Mar 2024US 11,933,198 B2Atlas Copco Airpower, Naamloze Vennootschap
- Gas turbine efficiency and power augmentation improvements utilizing heated compressed air23 Jan 2024US 11,879,364 B2Powerphase International, LLC
- Multiple loop power generation using super critical cycle fluid with split recuperator12 Dec 2023US 11,840,944 B2XYZ Energy Group, LLC
- System and methods for integration of concentrated solar steam generators to Rankine cycle power plants19 Sep 2023US 11,761,622 B2
- Intercooled Cascade Cycle Waste Heat Recovery System28 Dec 2023US 2023/0417151 A1Industrom Power LLC
- Method and device for expanding a fluid12 Oct 2023US 2023/0323795 A1Atlas Copco Airpower, Naamloze Vennootschap
- Heat Engine and Method of Manufacture27 Jul 2023US 2023/0235684 A1Katrick Technologies Limited
- Combined power generation system and operating method thereof6 Oct 2022US 2022/0316395 A1Doosan Enerbility Co., Ltd.
- Combined cycle power device15 Sep 2022US 2022/0290584 A1
Most cited
By later US patents
- Organic rankine cycle system54US 9,003,798 B2Cyclect Electrical Engineering Pte Ltd · 2015
- Multi-level organic rankine cycle power system46US 8,438,849 B2Ormat Technologies, Inc. · 2013
- Systems and methods for efficient two-phase heat transfer in compressed-air energy storage systems43US 8,539,763 B2SustainX, Inc. · 2013
- Systems and methods for efficient two-phase heat transfer in compressed-air energy storage systems43US 8,806,866 B2SustainX, Inc. · 2014
- Modified Goswami cycle based conversion of gas processing plant waste heat into power and cooling with flexibility17US 9,828,885 B2Saudi Arabian Oil Company · 2017