F21S 45/435
Circulating the gas within a closed system
Official title: circulating the gas within a closed system
F21S45/435 (Circulating the gas within a closed system) appears on 89 US grants and 102 published applications in this corpus.
Search patents in F21S- Granted patents
- 89
- Published applications
- 102
- Assignees
- 36
- Inventors
- 190
- Latest grant
- 23 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 7 |
| 2010 | 1 | 9 |
| 2011 | 2 | 8 |
| 2012 | 8 | 5 |
| 2013 | 5 | 3 |
| 2014 | 6 | 9 |
| 2015 | 4 | 3 |
| 2016 | 13 | 3 |
| 2017 | 0 | 9 |
| 2018 | 5 | 6 |
| 2019 | 15 | 7 |
| 2020 | 2 | 4 |
| 2021 | 11 | 10 |
| 2022 | 7 | 6 |
| 2023 | 3 | 4 |
| 2024 | 3 | 4 |
| 2025 | 4 | 2 |
| 2026 | 0 | 1 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Temperature control module and headlight23 Dec 2025US 12,504,146 B2Mercedes-Benz Group AG
- Lamp fitting, and vehicular headlamp7 Oct 2025US 12,435,851 B2Koito Manufacturing Co., Ltd.
- Vehicle lighting with thermal control8 Apr 2025US 12,270,524 B2Magna Exteriors Inc.
- Cooling module and headlight11 Mar 2025US 12,247,715 B2Mercedes-Benz Group AG
- Light module for a lighting device of a motor vehicle31 Dec 2024US 12,181,117 B2Valeo Vision
- Led vehicle headlamp capable of multi sided emission23 Jul 2026US 2026/0210521 A1Dongguan G-View Lighting Technology Co., Ltd
- Vehicle lights, in particular motor vehicle headlights4 Dec 2025US 2025/0369588 A1ZKW Group GmbH
- Temperature control module and headlight14 Aug 2025US 2025/0257860 A1Mercedes-Benz Group AG
- Lamp fitting, and vehicular headlamp12 Dec 2024US 2024/0410544 A1Koito Manufacturing Co., Ltd.
- Cooling module and headlight12 Dec 2024US 2024/0410545 A1Mercedes-Benz Group AG
Most cited
By later US patents
- Vehicle light17US 8,337,063 B2Stanley Electric Co., Ltd. · 2012
- Vehicle lighting device15US 7,985,013 B2Koito Manufacturing Co., Ltd. · 2011
- Automotive lamp14US 8,118,462 B2Koito Manufacturing Co., Ltd. · 2012
- Vehicle lamp13US 8,256,944 B2Koito Manufacturing Co., Ltd. · 2012
- LED and thermal management module for a vehicle headlamp11US 8,203,274 B22012