- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F21V - Functional features or details of lighting devices or systems thereof; structural combinations of lighting devices with other articles, not otherwise provided for
- F21V 21/04 - Recessed bases
Patent holdings for IPC class F21V 21/04
Total number of patents in this class: 991
10-year publication summary
|
96
|
94
|
105
|
134
|
130
|
114
|
102
|
95
|
71
|
53
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Signify Holding B.V. | 6948 |
125 |
| ABL IP Holding LLC | 1925 |
72 |
| Xiamen Eco Lighting Co. Ltd. | 288 |
38 |
| DMF, Inc. | 121 |
35 |
| Hubbell Lighting, Inc | 661 |
23 |
| Wangs Alliance Corp., DBA WAC Lighting | 157 |
21 |
| Feit Electric Company, Inc. | 244 |
19 |
| Ideal Industries Lighting LLC | 1153 |
19 |
| Axis Lighting Inc. | 94 |
13 |
| Zumtobel Lighting GmbH | 76 |
13 |
| Lighting Defense Group, LLC | 49 |
12 |
| Cordelia Lighting, Inc. | 56 |
10 |
| Lighting Science Group Corporation | 186 |
10 |
| Amp Plus, Inc., DBA Elco Lighting | 32 |
9 |
| Globe Electric Company Inc. | 51 |
9 |
| Zumtobel Lighting GmbH | 705 |
9 |
| Hubbell Incorporated | 3130 |
8 |
| Lucifer Lighting Company | 48 |
8 |
| Opple Lighting Co., Ltd. | 744 |
8 |
| Troy-CSL Lighting, Inc. | 45 |
8 |
| Other owners | 522 |