F24H 3/0464
Two-piece frames
Official title: {Two-piece frames, e.g. two-shell frames, also including frames as a central body with two covers}
F24H3/0464 (Two-piece frames) appears on 26 US grants and 39 published applications in this corpus.
Search patents in F24H- Granted patents
- 26
- Published applications
- 39
- Assignees
- 17
- Inventors
- 53
- Latest grant
- 4 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 2 |
| 2006 | 1 | 1 |
| 2007 | 0 | 7 |
| 2008 | 0 | 3 |
| 2009 | 2 | 5 |
| 2010 | 5 | 0 |
| 2011 | 0 | 3 |
| 2012 | 2 | 1 |
| 2013 | 1 | 3 |
| 2014 | 1 | 1 |
| 2015 | 1 | 2 |
| 2016 | 2 | 0 |
| 2017 | 1 | 1 |
| 2018 | 1 | 0 |
| 2019 | 1 | 1 |
| 2020 | 0 | 2 |
| 2021 | 1 | 2 |
| 2022 | 0 | 2 |
| 2023 | 3 | 2 |
| 2024 | 0 | 1 |
| 2025 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- PTC heater4 Nov 2025US 12,460,838 B2Hanon Systems
- Electric heating device18 Feb 2025US 12,232,225 B2Eberspacher catem GmbH & Co.KG
- Heat-generating element and electric heating device containing such27 Jun 2023US 11,686,502 B2Eberspacher catem GmbH & Co.KG
- PTC heater4 Apr 2023US 11,618,302 B2Hanon Systems
- Electric heating device and method for its production4 Apr 2023US 11,619,422 B2Eberspacher catem GmbH & Co.KG
- Electrical Heating Device and Method of Manufacturing the Same18 Apr 2024US 2024/0125514 A1Eberspacher catem GmbH & Co.KG
- Electric vehicle, electric heater, and electric heating cavity assembly of electric heater8 Jun 2023US 2023/0173888 A1Zhenjiang Helmholtz Thermal & Transmission System Co., Ltd.
- Electric heater for heating a substance in a motor vehicle5 Jan 2023US 2023/0007737 A1I.R.C.A. S.P.A. Industria Resistenze Corazzate E Affini
- Ptc heater12 May 2022US 2022/0146148 A1Hanon Systems
- Electric Heating Device6 Jan 2022US 2022/0007465 A1Eberspacher catem GmbH & Co.KG
Most cited
By later US patents
- Finned PTC air heater assembly for heating an automotive passenger compartment71US 5,256,857 ATexas Instruments Incorporated · 1993
- Automobile air heater utilizing PTC tablets adhesively fixed to tubular heat sinks25US 5,239,163 ATexas Instruments Incorporated · 1993
- Electric heating device13US 8,946,599 B2Catem GmbH & Co. KG · 2015
- Heat-generating element of a heating device11US 7,667,166 B2Catem GmbH & Co. KG · 2010
- Heat-generating element of a heating device10US 7,777,161 B2Catem GmbH & Co. KG · 2010