F21S 45/20
Promoting gas flow in lighting devices
Official title: Promoting gas flow in lighting devices, e.g. directing flow toward the cover glass for demisting (ventilation F21S45/30; forced cooling F21S45/42)
F21S45/20 (Promoting gas flow in lighting devices) appears on 19 US grants and 22 published applications in this corpus.
Search patents in F21S- Granted patents
- 19
- Published applications
- 22
- Assignees
- 19
- Inventors
- 63
- Latest grant
- 30 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2017 | 0 | 1 |
| 2018 | 1 | 5 |
| 2019 | 5 | 2 |
| 2020 | 2 | 1 |
| 2021 | 0 | 0 |
| 2022 | 1 | 3 |
| 2023 | 2 | 1 |
| 2024 | 2 | 0 |
| 2025 | 2 | 4 |
| 2026 | 4 | 5 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Dehumidifier of lamp for vehicle and lamp including the same30 Jun 2026US 12,669,231 B2Hyundai Motor Company
- Dehumidifier for lamp of vehicle and lamp including the same30 Jun 2026US 12,669,232 B2Hvs
- Lens cleaning system21 Apr 2026US 12,606,127 B2ZKW Group GmbH
- Illumination unit having an antifogging system24 Mar 2026US 12,584,607 B2Ford Global Technologies, LLC
- Temperature control module and headlight23 Dec 2025US 12,504,146 B2Mercedes-Benz Group AG
- Device comprising illuminated movable closure elements30 Jul 2026US 2026/0218875 A1Valeo Vision
- Dehumidifier of lamp for vehicle and lamp including the same21 May 2026US 2026/0139811 A1Hvs
- Dehumidifier of lamp for vehicle and lamp including the same21 May 2026US 2026/0139812 A1Hvs
- Dehumidifier for lamp of vehicle and lamp including the same21 May 2026US 2026/0139813 A1Hvs
- Exterior lamps with heated lens for anti-condensation14 May 2026US 2026/0132907 A1Ford Global Technologies, LLC
Most cited
By later US patents
- Vehicle LED lamp having recirculating air channels9US 10,415,787 B2Osram Sylvania Inc. · 2019
- Head lamp for vehicle including moisture removing apparatus1US 10,184,636 B2Hyundai Motor Company · 2019
- Dehumidifying device and lamp1US 10,386,059 B2Nitto Denko Corporation · 2019
- Vehicular lamp capable of dehumidification1US 11,873,965 B2Woosungpowertech Co., Ltd. · 2024