F21L
Lighting devices or systems thereof, being portable or specially adapted for transportation
F21L (Lighting devices or systems thereof, being portable or specially adapted for transportation) appears on 4,605 US grants and 4,101 published applications in this corpus.
Search patents in F21L- Granted patents
- 4,605
- Published applications
- 4,101
- Assignees
- 1,497
- Inventors
- 5,938
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 25 | 0 |
| 1977 | 20 | 0 |
| 1978 | 24 | 0 |
| 1979 | 16 | 0 |
| 1980 | 35 | 0 |
| 1981 | 40 | 0 |
| 1982 | 31 | 0 |
| 1983 | 28 | 0 |
| 1984 | 32 | 0 |
| 1985 | 41 | 0 |
| 1986 | 37 | 0 |
| 1987 | 39 | 0 |
| 1988 | 43 | 0 |
| 1989 | 44 | 0 |
| 1990 | 54 | 0 |
| 1991 | 53 | 0 |
| 1992 | 61 | 0 |
| 1993 | 52 | 0 |
| 1994 | 49 | 0 |
| 1995 | 68 | 0 |
| 1996 | 46 | 0 |
| 1997 | 52 | 0 |
| 1998 | 66 | 0 |
| 1999 | 59 | 0 |
| 2000 | 74 | 0 |
| 2001 | 95 | 29 |
| 2002 | 80 | 81 |
| 2003 | 92 | 101 |
| 2004 | 96 | 144 |
| 2005 | 102 | 181 |
| 2006 | 124 | 184 |
| 2007 | 108 | 162 |
| 2008 | 87 | 137 |
| 2009 | 92 | 166 |
| 2010 | 115 | 177 |
| 2011 | 85 | 152 |
| 2012 | 113 | 163 |
| 2013 | 140 | 197 |
| 2014 | 143 | 178 |
| 2015 | 169 | 223 |
| 2016 | 156 | 205 |
| 2017 | 182 | 206 |
| 2018 | 185 | 225 |
| 2019 | 231 | 185 |
| 2020 | 197 | 179 |
| 2021 | 194 | 171 |
| 2022 | 167 | 150 |
| 2023 | 157 | 159 |
| 2024 | 169 | 122 |
| 2025 | 150 | 137 |
| 2026 | 87 | 87 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Main groups
Granted patents with any code in the group
- F21L 4/00Electric lighting devices with self-contained electric batteries or cells3,550
- F21L 2/00Systems of electric lighting devices612
- F21L 14/00Electric lighting devices without a self-contained power source607
- F21L 13/00Electric lighting devices with built-in electric generators124
- F21L 19/00Lanterns88
- F21L 17/00Non-electric torches22
- F21L 27/00Lighting devices or systems, employing combinations of electric and non-electric light sources15
- F21L 26/00Non-electric portable lighting devices, or systems thereof, not provided for in groups5
All 10 main groupsShow fewer
Recent patents
- Caulk nozzle lighting system6 Oct 2026US 12,752,298 B2
- Dual-stage flashlight switch and flashlight6 Oct 2026US 12,753,912 B1
- Work light29 Sep 2026US 12,747,854 B2Milwaukee Electric Tool Corporation
- Scuba light with offset battery cases22 Sep 2026US 12,742,525 B1
- Portable charger for recreational flying objects and method of use22 Sep 2026US 12,742,526 B2
- Portable lighting device with a flexible and deployable led lighting element8 Oct 2026US 2026/0309287 A1Promier Products Inc.
- Illumination apparatus for medical instrument and medical instrument kit1 Oct 2026US 2026/0298421 A1Smtp Medical Co., Ltd.
- Handheld lighting device and related methods1 Oct 2026US 2026/0298455 A1Harbor Freight Tools USA, Inc.
- Personal signaling device1 Oct 2026US 2026/0301550 A1S&S Precision, LLC
- Multifunction portable illumination system24 Sep 2026US 2026/0287126 A1Immobileyes Inc.
Most cited
By later US patents
- Preparedness flashlight1,025US 7,780,309 B2Eveready Battery Company, Inc. · 2010
- Method and apparatus for an L.E.D. flashlight530US 6,095,661 APPT Vision, Inc. · 2000
- Light emitting diode based products315US 7,161,313 B2Color Kinetics Incorporated · 2007
- High power LED305US 6,541,800 B2Weldon Technologies, Inc. · 2003
- LED illumination apparatus and card-type LED illumination source287US 6,949,772 B2Matsushita Electric Industrial Co., Ltd. · 2005