F24D 11/00
Central heating systems using heat accumulated in storage masses
Official title: Central heating systems using heat accumulated in storage masses (self-contained storage heating units F24D15/02)
F24D11/00 (Central heating systems using heat accumulated in storage masses) appears on 999 US grants and 674 published applications in this corpus.
Search patents in F24D- Granted patents
- 999
- Published applications
- 674
- Assignees
- 475
- Inventors
- 1,790
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 19 | 0 |
| 1977 | 40 | 0 |
| 1978 | 52 | 0 |
| 1979 | 51 | 0 |
| 1980 | 67 | 0 |
| 1981 | 87 | 0 |
| 1982 | 44 | 0 |
| 1983 | 51 | 0 |
| 1984 | 44 | 0 |
| 1985 | 44 | 0 |
| 1986 | 15 | 0 |
| 1987 | 17 | 0 |
| 1988 | 9 | 0 |
| 1989 | 12 | 0 |
| 1990 | 12 | 0 |
| 1991 | 7 | 0 |
| 1992 | 7 | 0 |
| 1993 | 6 | 0 |
| 1994 | 4 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 7 | 0 |
| 1999 | 5 | 0 |
| 2000 | 2 | 0 |
| 2001 | 6 | 1 |
| 2002 | 7 | 6 |
| 2003 | 4 | 2 |
| 2004 | 4 | 9 |
| 2005 | 3 | 7 |
| 2006 | 4 | 5 |
| 2007 | 1 | 11 |
| 2008 | 3 | 15 |
| 2009 | 2 | 29 |
| 2010 | 6 | 54 |
| 2011 | 4 | 57 |
| 2012 | 15 | 47 |
| 2013 | 12 | 40 |
| 2014 | 23 | 37 |
| 2015 | 28 | 42 |
| 2016 | 22 | 28 |
| 2017 | 28 | 23 |
| 2018 | 36 | 38 |
| 2019 | 19 | 25 |
| 2020 | 20 | 24 |
| 2021 | 28 | 23 |
| 2022 | 25 | 34 |
| 2023 | 22 | 21 |
| 2024 | 24 | 45 |
| 2025 | 28 | 31 |
| 2026 | 17 | 20 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Building25 Aug 2026US 12,714,036 B2Kobe Steel, Ltd.
- Cold climate heat pump system with energy storage11 Aug 2026US 12,704,328 B2Trane International Inc.
- Hot water circulation device and hot water device monitoring system23 Jun 2026US 12,663,166 B2Noritz Corporation
- Heating system9 Jun 2026US 12,650,234 B2Intellihot, Inc.
- Thermal storage system and method26 May 2026US 12,638,249 B2Other Lab, LLC
- Energy efficient enclosure temperature regulation system17 Sep 2026US 2026/0276213 A1Ceres Greenhouse Solutions LLC
- Thermal fluid conveyance manifold and operation thereof17 Sep 2026US 2026/0276215 A1
- Thermal storage system and method17 Sep 2026US 2026/0276319 A1Other Lab, LLC
- Air heating apparatus27 Aug 2026US 2026/0251318 A1Kyungdong Navien Co., Ltd.
- 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
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
- Methods, apparatus, and compositions for storing heat for the heating and cooling of buildings99US 4,259,401 AThe Southwall Corporation · 1981
- Multistage thermostat using integral initiation change means93US 4,332,352 AHoneywell Inc. · 1982
- Solar energy recovery system93US 4,476,853 A1984