F24H 9/1827
Positive temperature coefficient [ptc] resistor
Official title: {Positive temperature coefficient [PTC] resistor}
F24H9/1827 (Positive temperature coefficient [ptc] resistor) appears on 57 US grants and 88 published applications in this corpus.
Search patents in F24H- Granted patents
- 57
- Published applications
- 88
- Assignees
- 46
- Inventors
- 152
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 3 |
| 2009 | 0 | 3 |
| 2010 | 0 | 2 |
| 2011 | 1 | 3 |
| 2012 | 3 | 6 |
| 2013 | 0 | 6 |
| 2014 | 1 | 1 |
| 2015 | 4 | 4 |
| 2016 | 4 | 4 |
| 2017 | 3 | 5 |
| 2018 | 4 | 12 |
| 2019 | 4 | 3 |
| 2020 | 6 | 4 |
| 2021 | 5 | 12 |
| 2022 | 3 | 1 |
| 2023 | 7 | 9 |
| 2024 | 4 | 5 |
| 2025 | 6 | 5 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Electric heating device25 Aug 2026US 12,720,644 B2Eberspacher catem GmbH & Co.KG
- Method for confectioning resistors, resistor, and heating device16 Sep 2025US 12,417,866 B2BorgWarner Inc.
- Electrical fluid heater5 Aug 2025US 12,379,134 B2Valeo Systemes Thermiques
- PTC heater29 Jul 2025US 12,372,271 B2Bestway Inflatables & Materials Corp.
- PTC heater27 May 2025US 12,313,294 B2Bestway Inflatables & Material Corp.
- Electric Heating Device28 Aug 2025US 2025/0275016 A1Eberspacher catem GmbH & Co.KG
- Electrical Heating Device28 Aug 2025US 2025/0275017 A1Eberspacher catem GmbH & Co.KG
- An electrical fluid heater29 May 2025US 2025/0172319 A1Valeo Systemes Thermiques
- Fluid heating device for battery heating of electric vehicle13 Mar 2025US 2025/0085019 A1Korea Fuel-Tech Corporation
- Electric device with ptc heater and control board integrated with bus module20 Feb 2025US 2025/0063634 A1Dongguan Sharing Electronics Co., Ltd.
Most cited
By later US patents
- Flow heater18US 6,093,909 ADavid & Baader - DBK - Spezialfabrik elektischer Apparate und Heizwiderstande GmbH · 2000
- Automotive water heater14US 8,170,406 B22012
- Electric heating device13US 8,946,599 B2Catem GmbH & Co. KG · 2015
- Electrical heating device10US 9,161,391 B2Eberspacher eatem GmbH & Co. KG · 2015
- Heat-generating element for an electric heating device and method for the manufacture of the same8US 8,183,505 B2Catem GmbH & Co. KG · 2012