F24D 1/00
Steam central heating systems
Official title: Steam central heating systems (district heating systems F24D10/00; central heating systems using heat accumulated in storage masses F24D11/00)
F24D1/00 (Steam central heating systems) appears on 66 US grants and 58 published applications in this corpus.
Search patents in F24D- Granted patents
- 66
- Published applications
- 58
- Assignees
- 39
- Inventors
- 119
- Latest grant
- 24 Jun 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 6 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 2 |
| 2002 | 3 | 0 |
| 2003 | 2 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 2 |
| 2006 | 1 | 1 |
| 2007 | 1 | 2 |
| 2008 | 1 | 3 |
| 2009 | 0 | 2 |
| 2010 | 1 | 3 |
| 2011 | 0 | 7 |
| 2012 | 0 | 3 |
| 2013 | 2 | 0 |
| 2014 | 2 | 3 |
| 2015 | 5 | 5 |
| 2016 | 3 | 3 |
| 2017 | 1 | 3 |
| 2018 | 4 | 4 |
| 2019 | 2 | 5 |
| 2020 | 1 | 3 |
| 2021 | 5 | 1 |
| 2022 | 1 | 1 |
| 2023 | 4 | 2 |
| 2024 | 1 | 0 |
| 2025 | 1 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Automated temperature control of heating radiators24 Jun 2025US 12,339,014 B2Therm Controls Incorporated
- Heating, ventilation, and air conditioning system with primary and secondary heat transfer loops20 Feb 2024US 11,906,211 B2Johnson Controls Tyco IP Holdings LLP
- Faux fireplace with synchronized flame crackling5 Dec 2023US 11,835,240 B1Modern Flames, LLC
- Heat storage and heat release system for molten salt with steam heating19 Sep 2023US 11,761,711 B1Beijing Minli Energy Storage Technology Co., Ltd.
- Faux fireplace with synchronized flame crackling15 Aug 2023US 11,725,827 B1Rpg Brands
- System and method for centralized steam cleaning17 Sep 2026US 2026/0276212 A1Clean Core LLC
- Steam Trap Insulating Cover with Wireless Monitoring1 May 2025US 2025/0137663 A1
- Faux fireplace with synchronized flame crackling30 Nov 2023US 2023/0383953 A1Modern Flames, LLC
- Faux fireplace with synchronized flame crackling10 Aug 2023US 2023/0250967 A1Modern Flames, LLC
- Heating, ventilation, and air conditioning system with primary and secondary heat transfer loops10 Feb 2022US 2022/0042723 A1Johnson Controls Tyco IP Holdings LLP
Most cited
By later US patents
- Temperature-controlled water delivery system96US 5,623,990 ATexan Corporation · 1997
- Silicon melting crucible29US 4,356,152 ARCA Corporation · 1982
- Self-pumping water boiler system20US 4,158,438 ARaytheon Company · 1979
- Apparatus for conserving thermal energy in a central heating system16US 6,427,724 B2Zhuhai Velocity of Sound Technology Limited · 2002
- Cogeneration system15US 5,607,013 ATakenaka Corporation · 1997