Y02B 30/52
Heat recovery pumps, i.e. heat pump based systems or units able to
Official title: Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
Y02B30/52 (Heat recovery pumps, i.e. heat pump based systems or units able to) appears on 719 US grants and 629 published applications in this corpus.
Search patents in Y02B- Granted patents
- 719
- Published applications
- 629
- Assignees
- 438
- Inventors
- 1,538
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 8 | 0 |
| 1978 | 10 | 0 |
| 1979 | 8 | 0 |
| 1980 | 19 | 0 |
| 1981 | 20 | 0 |
| 1982 | 21 | 0 |
| 1983 | 13 | 0 |
| 1984 | 14 | 0 |
| 1985 | 10 | 0 |
| 1986 | 13 | 0 |
| 1987 | 17 | 0 |
| 1988 | 6 | 0 |
| 1989 | 6 | 0 |
| 1990 | 8 | 0 |
| 1991 | 7 | 0 |
| 1992 | 4 | 0 |
| 1993 | 13 | 0 |
| 1994 | 11 | 0 |
| 1995 | 7 | 0 |
| 1996 | 8 | 0 |
| 1997 | 4 | 0 |
| 1998 | 17 | 0 |
| 1999 | 6 | 0 |
| 2000 | 7 | 0 |
| 2001 | 11 | 2 |
| 2002 | 9 | 5 |
| 2003 | 10 | 8 |
| 2004 | 7 | 9 |
| 2005 | 8 | 10 |
| 2006 | 4 | 19 |
| 2007 | 12 | 8 |
| 2008 | 4 | 13 |
| 2009 | 5 | 19 |
| 2010 | 1 | 34 |
| 2011 | 7 | 39 |
| 2012 | 15 | 40 |
| 2013 | 18 | 40 |
| 2014 | 18 | 42 |
| 2015 | 25 | 34 |
| 2016 | 32 | 34 |
| 2017 | 23 | 40 |
| 2018 | 34 | 46 |
| 2019 | 36 | 42 |
| 2020 | 38 | 43 |
| 2021 | 36 | 30 |
| 2022 | 43 | 21 |
| 2023 | 27 | 21 |
| 2024 | 15 | 12 |
| 2025 | 13 | 11 |
| 2026 | 7 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Beverage preparation machine and cooling module25 Aug 2026US 12,715,751 B2Koninklijke Douwe Egberts B. V.
- Dishwasher including heat pump apparatus28 Jul 2026US 12,690,746 B2LG Electronics Inc.
- Dispensing system and a method for its operation, cleaning unit and dispensing unit26 May 2026US 12,636,671 B2L'oreal
- Dishwasher with heat recovery apparatus12 May 2026US 12,622,567 B2Illinois Tool Works Inc.
- Method and computer program product for evacuation of contaminated air and prevention of ignition in an air handling system7 Apr 2026US 12,595,922 B2FläKtgroup Sweden AB
- Method for providing cooled air20 Aug 2026US 2026/0243457 A1
- Heat pump system and method for manufacturing heat pump device20 Aug 2026US 2026/0243471 A1Mitsubishi Electric Corporation
- Dishwasher with heat pump9 Jul 2026US 2026/0191395 A1Electrolux Appliances Aktiebolag
- System and method for generating heating and cooling power in a treatment plant for workpieces9 Apr 2026US 2026/0098666 A1Dürr Systems AG
- Dishwasher including heat pump apparatus26 Feb 2026US 2026/0053328 A1LG Electronics Inc.
Most cited
By later US patents
- Distillation process for ethanol209US 5,124,004 ATrustees of Dartmouth College · 1992
- Distillation systems and methods123US 4,626,321 ATrustees of Dartmouth College · 1986
- Refrigeration-cycle device123US 6,347,528 B1Denso Corporation · 2002
- Thermodynamic apparatus123US 6,629,413 B1The Commonwealth of Australia Commonwealth Scientific and Industrial Research Organization · 2003
- Desiccant assisted dehumidification and cooling system114US 5,579,647 AEngelhard/ICC · 1996