F24D 7/00
Central heating systems employing heat-transfer fluids not covered by groups f24d1/00 -
Official title: Central heating systems employing heat-transfer fluids not covered by groups F24D1/00 - F24D5/00, e.g. oil, salt or gas (district heating systems F24D10/00; central heating systems using heat accumulated in storage masses F24D11/00)
F24D7/00 (Central heating systems employing heat-transfer fluids not covered by groups f24d1/00 -) appears on 37 US grants and 38 published applications in this corpus.
Search patents in F24D- Granted patents
- 37
- Published applications
- 38
- Assignees
- 32
- Inventors
- 95
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 0 | 1 |
| 2011 | 0 | 2 |
| 2012 | 1 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 2 |
| 2015 | 0 | 1 |
| 2016 | 0 | 5 |
| 2017 | 2 | 2 |
| 2018 | 3 | 3 |
| 2019 | 0 | 1 |
| 2020 | 0 | 2 |
| 2021 | 4 | 3 |
| 2022 | 3 | 5 |
| 2023 | 1 | 3 |
| 2024 | 4 | 0 |
| 2025 | 2 | 3 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Heating device for liquids2 Jun 2026US 12,644,625 B2Reflexy Nederland B.V.
- Heating device with improved efficiency2 Sep 2025US 12,405,010 B2Suter Entfeuchtungstechnik AG
- Air conditioning system1 Jul 2025US 12,345,434 B2Daikin Industries, Ltd.
- Conduit module coupled with heating or cooling module15 Oct 2024US 12,117,200 B2WaterFurnace International, Inc.
- Condensate drain system for a furnace2 Jul 2024US 12,025,347 B2Tyco Fire & Security GmbH
- Three-pipe thermal network26 Feb 2026US 2026/0055901 A1ExerGo SA
- Energy and hydrometric control of horticultural greenhouses20 Nov 2025US 2025/0351782 A1Les Industries Harnois Inc.
- Heat exchanger beds and related systems and methods10 Apr 2025US 2025/0113922 A1Trane International Inc.
- Conduit module coupled with heating or cooling module2 Jan 2025US 2025/0003609 A1WaterFurnace International, Inc.
- Conduit module coupled with heating or cooling module23 Nov 2023US 2023/0375198 A1WaterFurnace International, Inc.
Most cited
By later US patents
- System for heating the operators cabin of a machine powered by an internal combustion engine35US 4,434,934 AKlockner-Humboldt-Deutz Aktiengesellschaft · 1984
- Dynamic heating and cooling of a building using liquid foam33US 6,575,234 B2Sunarc Structures Inc. · 2003
- Honeycomb sandwich panel with built in heat pipes28US 5,727,619 AMitsubishi Denki Kabushiki Kaisha · 1998
- Honeycomb sandwich panel with built in heat pipes23US 5,682,943 AMitsubishi Denki Kabushiki Kaisha · 1997
- Heating system and element therefor15US 4,060,194 A1977