- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- 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: 991
10-year publication summary
|
160
|
146
|
157
|
134
|
111
|
94
|
78
|
54
|
47
|
27
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Streamlight, Inc. | 394 |
64 |
| Milwaukee Electric Tool Corporation | 3572 |
40 |
| MAG Instrument, Inc. | 174 |
39 |
| Zedel | 224 |
13 |
| Ledlenser GmbH & Co. KG | 109 |
13 |
| Emissive Energy Corporation | 59 |
12 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
11 |
| Energizer Brands, LLC | 835 |
10 |
| Fuse, LLC | 119 |
10 |
| Eveready Battery Company, Inc. | 267 |
9 |
| 9609385 Canada Inc. | 61 |
9 |
| Alltemp Products Company Limited | 60 |
9 |
| Coast Cutlery Co. | 160 |
8 |
| The Coleman Company, Inc. | 663 |
8 |
| SureFire, LLC | 306 |
8 |
| Zweibrüder Optoelectronics GmbH & Co. KG | 18 |
8 |
| OSRAM SYLVANIA Inc. | 742 |
7 |
| Nichia Corporation | 3394 |
7 |
| Promier Products Inc. | 100 |
7 |
| Acera LLC | 20 |
7 |
| Other owners | 692 |