- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F21L - Lighting devices or systems thereof, being portable or specially adapted for transportation
- F21L 4/00 - Electric lighting devices with self-contained electric batteries or cells
Patent holdings for IPC class F21L 4/00
Total number of patents in this class: 957
10-year publication summary
|
146
|
157
|
134
|
111
|
94
|
78
|
56
|
51
|
46
|
31
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Streamlight, Inc. | 409 |
65 |
| Milwaukee Electric Tool Corporation | 4300 |
42 |
| MAG Instrument, Inc. | 160 |
38 |
| Zedel | 252 |
13 |
| Ledlenser GmbH & Co. KG | 114 |
13 |
| Panasonic Intellectual Property Management Co., Ltd. | 31022 |
11 |
| Fuse, LLC | 121 |
11 |
| Energizer Brands, LLC | 817 |
10 |
| 9609385 Canada Inc. | 57 |
9 |
| Emissive Energy Corporation | 55 |
9 |
| Coast Cutlery Co. | 189 |
8 |
| The Coleman Company, Inc. | 651 |
8 |
| SureFire, LLC | 309 |
8 |
| Zweibrüder Optoelectronics GmbH & Co. KG | 15 |
8 |
| Eveready Battery Company, Inc. | 226 |
7 |
| Nichia Corporation | 3669 |
7 |
| Promier Products Inc. | 110 |
7 |
| Acera LLC | 19 |
7 |
| Makita Corporation | 2461 |
6 |
| Hangzhou Great Star Industrial Co., Ltd. | 602 |
6 |
| Other owners | 664 |