F24H 3/0452
Frame constructions
Official title: {Frame constructions}
F24H3/0452 (Frame constructions) appears on 66 US grants and 99 published applications in this corpus.
Search patents in F24H- Granted patents
- 66
- Published applications
- 99
- Assignees
- 46
- Inventors
- 179
- Latest grant
- 23 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 2 |
| 2004 | 1 | 0 |
| 2005 | 0 | 6 |
| 2006 | 2 | 3 |
| 2007 | 2 | 12 |
| 2008 | 2 | 6 |
| 2009 | 4 | 9 |
| 2010 | 5 | 3 |
| 2011 | 4 | 3 |
| 2012 | 3 | 2 |
| 2013 | 2 | 7 |
| 2014 | 2 | 5 |
| 2015 | 3 | 4 |
| 2016 | 6 | 3 |
| 2017 | 2 | 2 |
| 2018 | 3 | 2 |
| 2019 | 2 | 4 |
| 2020 | 2 | 4 |
| 2021 | 1 | 7 |
| 2022 | 3 | 5 |
| 2023 | 4 | 5 |
| 2024 | 1 | 4 |
| 2025 | 5 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Process for manufacturing a PTC heating element and PTC heating element23 Dec 2025US 12,507,321 B2Eberspächer catem Hermsdorf GmbH & Co. KG
- Electronic interface housing for controlling an electrical heating device11 Nov 2025US 12,471,187 B2Valeo Systemes Thermiques
- PTC heater4 Nov 2025US 12,460,838 B2Hanon Systems
- Electric heating device13 May 2025US 12,298,012 B2Eberspacher catem GmbH & Co.KG
- Electric heating device18 Feb 2025US 12,232,225 B2Eberspacher catem GmbH & Co.KG
- Electric radiator for a ventilation, heating and/or air-conditioning system10 Apr 2025US 2025/0116413 A1Valeo Systemes Thermiques
- Electrical Heating Device with a Hold-Down Device2 May 2024US 2024/0142137 A1Eberspacher catem GmbH & Co.KG
- Electrical Heating Device and Method of Manufacturing the Same18 Apr 2024US 2024/0125514 A1Eberspacher catem GmbH & Co.KG
- PTC Heating Device and Method for Manufacturing the Same15 Feb 2024US 2024/0053057 A1Eberspacher catem GmbH & Co.KG
- Electric Heating Assembly and Method of Manufacturing the Same11 Jan 2024US 2024/0011667 A1Eberspacher catem GmbH & Co.KG
Most cited
By later US patents
- Heating heat exchanger with electric heat emitter90US 5,995,711 ADenso Corporation · 1999
- Finned PTC air heater assembly for heating an automotive passenger compartment71US 5,256,857 ATexas Instruments Incorporated · 1993
- Convective heater68US 8,575,518 B2Gentherm Incorporated · 2013
- Core unit of heat exchanger having electric heater67US 6,178,292 B1Denso Corporation · 2001
- Radiator having PTC electric resistance heating elements and spring-biased fin arrangement41US 5,057,672 AApparte und Heizwiderstande GmbH · 1991