F24D 11/02
Central heating systems using heat accumulated in storage masses: using heat pumps
Official title: using heat pumps
F24D11/02 (Central heating systems using heat accumulated in storage masses: using heat pumps) appears on 479 US grants and 364 published applications in this corpus.
Search patents in F24D- Granted patents
- 479
- Published applications
- 364
- Assignees
- 237
- Inventors
- 899
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 12 | 0 |
| 1978 | 21 | 0 |
| 1979 | 22 | 0 |
| 1980 | 24 | 0 |
| 1981 | 35 | 0 |
| 1982 | 21 | 0 |
| 1983 | 24 | 0 |
| 1984 | 18 | 0 |
| 1985 | 18 | 0 |
| 1986 | 4 | 0 |
| 1987 | 9 | 0 |
| 1988 | 5 | 0 |
| 1989 | 5 | 0 |
| 1990 | 9 | 0 |
| 1991 | 6 | 0 |
| 1992 | 2 | 0 |
| 1993 | 4 | 0 |
| 1994 | 3 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 5 | 0 |
| 1999 | 4 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 1 |
| 2002 | 2 | 2 |
| 2003 | 0 | 1 |
| 2004 | 1 | 3 |
| 2005 | 1 | 1 |
| 2006 | 1 | 2 |
| 2007 | 0 | 3 |
| 2008 | 1 | 7 |
| 2009 | 1 | 10 |
| 2010 | 2 | 28 |
| 2011 | 2 | 21 |
| 2012 | 3 | 25 |
| 2013 | 4 | 22 |
| 2014 | 9 | 18 |
| 2015 | 18 | 20 |
| 2016 | 12 | 16 |
| 2017 | 18 | 13 |
| 2018 | 17 | 23 |
| 2019 | 12 | 16 |
| 2020 | 11 | 17 |
| 2021 | 19 | 16 |
| 2022 | 17 | 23 |
| 2023 | 16 | 12 |
| 2024 | 17 | 26 |
| 2025 | 17 | 24 |
| 2026 | 12 | 14 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Cold climate heat pump system with energy storage11 Aug 2026US 12,704,328 B2Trane International Inc.
- Thermal storage system and method26 May 2026US 12,638,249 B2Other Lab, LLC
- System and method for providing domestic hot water and/or space heating within a building, and a removable cover of a storage vessel19 May 2026US 12,631,345 B2Mitsubishi Electric Corporation
- Methods and systems for modulating energy usage12 May 2026US 12,624,861 B2Octopus Energy Heating Limited
- Multi-energy coupled cooling/heating system for buildings in long-term cooling region and operation method21 Apr 2026US 12,607,389 B2North China Municipal Engineering Design & Research Institute Co., Ltd.
- Thermal fluid conveyance manifold and operation thereof17 Sep 2026US 2026/0276215 A1
- Thermal storage system and method17 Sep 2026US 2026/0276319 A1Other Lab, LLC
- Method and installation for providing energy, particularly thermal, low-carbon energy, in at least one building or the like, and related system20 Aug 2026US 2026/0246281 A1Accenta
- Smart Fluid Heating Systems and Methods30 Jul 2026US 2026/0218917 A1Rheem Manufacturing Company
- System and method for energy storage30 Jul 2026US 2026/0218991 A1
Most cited
By later US patents
- Heat pump air conditioning system132US 4,420,947 AMitsubishi Denki Kabushiki Kaisha · 1983
- Residential heating, cooling and energy management system128US 4,909,041 AUHR Corporation · 1990
- Multistage thermostat using integral initiation change means93US 4,332,352 AHoneywell Inc. · 1982
- Geothermal storage heating and cooling system91US 4,375,831 A1983
- Residential heating, cooling and energy management system89US 4,645,908 AUHR Corporation · 1987