F01K 3/06
The engine being of extraction or non-condensing type
Official title: the engine being of extraction or non-condensing type {(F01K3/004 takes precedence)}
F01K3/06 (The engine being of extraction or non-condensing type) appears on 38 US grants and 48 published applications in this corpus.
Search patents in F01K- Granted patents
- 38
- Published applications
- 48
- Assignees
- 25
- Inventors
- 69
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 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 | 3 |
| 2010 | 0 | 2 |
| 2011 | 0 | 1 |
| 2012 | 1 | 0 |
| 2013 | 0 | 0 |
| 2014 | 3 | 1 |
| 2015 | 1 | 3 |
| 2016 | 0 | 4 |
| 2017 | 3 | 2 |
| 2018 | 2 | 7 |
| 2019 | 7 | 5 |
| 2020 | 2 | 3 |
| 2021 | 5 | 4 |
| 2022 | 3 | 3 |
| 2023 | 3 | 4 |
| 2024 | 2 | 3 |
| 2025 | 0 | 3 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Power generation facility28 Jul 2026US 12,692,803 B2Kabushiki Kaisha Toshiba
- Pumped heat energy storage system with modular turbomachinery22 Oct 2024US 12,123,327 B2Malta Inc.
- Variable pressure inventory control of closed cycle system with a high pressure tank and an intermediate pressure tank18 Jun 2024US 12,012,902 B2Malta Inc.
- Pumped heat electric storage system with recirculation26 Dec 2023US 11,852,043 B2Malta Inc.
- Particle-based thermal energy storage systems7 Nov 2023US 11,808,523 B2Alliance for Sustainable Energy, LLC
- Long-duration phes systems with modular configurations27 Mar 2025US 2025/0101886 A1Malta Inc.
- Dual-powertrain pumped heat energy storage with inventory control and purge13 Mar 2025US 2025/0084773 A1Malta Inc.
- Power generation facility9 Jan 2025US 2025/0012207 A1Kabushiki Kaisha Toshiba
- Variable pressure inventory control of closed cycle system with a high pressure tank and an intermediate pressure tank10 Oct 2024US 2024/0337220 A1Malta Inc.
- Dual-powertrain pumped heat energy storage with inventory control and purge16 May 2024US 2024/0159168 A1Malta Inc.
Most cited
By later US patents
- Energy storage71US 8,656,712 B2Isentropic Limited · 2014
- Energy storage64US 8,826,664 B2Isentropic Limited · 2014
- Method and system for generating power from a heat source60US 8,166,761 B2Newcastle Innovation Limited · 2012
- Atmospheric storage and transfer of thermal energy58US 10,082,104 B2X Development LLC · 2018
- Use of regenerator in thermodynamic cycle system54US 10,082,045 B2X Development LLC · 2018