F01K 3/004
Accumulation in the liquid branch of the circuit
Official title: {Accumulation in the liquid branch of the circuit}
F01K3/004 (Accumulation in the liquid branch of the circuit) appears on 56 US grants and 68 published applications in this corpus.
Search patents in F01K- Granted patents
- 56
- Published applications
- 68
- Assignees
- 58
- Inventors
- 155
- Latest grant
- 17 Jun 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 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 | 1 |
| 2009 | 1 | 1 |
| 2010 | 0 | 2 |
| 2011 | 1 | 3 |
| 2012 | 1 | 5 |
| 2013 | 0 | 8 |
| 2014 | 1 | 9 |
| 2015 | 4 | 8 |
| 2016 | 9 | 6 |
| 2017 | 11 | 5 |
| 2018 | 6 | 2 |
| 2019 | 2 | 3 |
| 2020 | 4 | 2 |
| 2021 | 1 | 2 |
| 2022 | 2 | 3 |
| 2023 | 2 | 5 |
| 2024 | 1 | 2 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Systems and methods for smoothing and storage of intermittent renewable power17 Jun 2025US 12,331,727 B2Bennamann Services Ltd
- Pumped heat energy storage system with electric heating integration30 Jan 2024US 11,885,244 B2Malta Inc.
- Flexible integration of stored heat and electric resources (fisher)12 Dec 2023US 11,840,943 B2Pintail Power LLC
- Vapor-powered liquid-driven turbine19 Sep 2023US 11,761,355 B2
- Pumped heat energy storage system with electric heating integration26 Jul 2022US 11,396,826 B2Malta Inc.
- Pumped heat energy storage system with electric heating integration10 Apr 2025US 2025/0116210 A1Malta Inc.
- Pumped heat energy storage system with electric heating integration16 May 2024US 2024/0159167 A1Malta Inc.
- Thermal storage and supply2 May 2024US 2024/0142178 A1Spirax-Sarco Limited
- Systems and methods for smoothing and storage of intermittent renewable power7 Dec 2023US 2023/0392581 A1Bennamann Services Ltd
- Method for building a temperature prediction model and setting heating temperature and heat cycle system20 Apr 2023US 2023/0122286 A1Wistron Corporation
Most cited
By later US patents
- Hot-water storage type power generating unit72US 4,479,352 AMitsui Engineering & Shipbuilding Co., Ltd. · 1984
- Thermal energy storage and recovery device and system having a heat exchanger arrangement using a compressed gas46US 8,991,183 B2Siemens Aktiengesellschaft · 2015
- Thermal energy storage and utilization system37US 4,003,786 AExxon Research & Engineering Co. · 1977
- Method and apparatus for reducing the initial start-up and subsequent stabilization period losses, for increasing the usable power and for improving the controllability of a thermal power plant34US 4,549,401 ASaarbergwerke Aktiengesellschaft · 1985
- Pumped heat energy storage system with electric heating integration21US 11,396,826 B2Malta Inc. · 2022