- All sections
- G - Physics
- G01R - Measuring electric variablesmeasuring magnetic variables
- G01R 31/44 - Testing lamps
Patent holdings for IPC class G01R 31/44
Total number of patents in this class: 370
10-year publication summary
|
39
|
77
|
75
|
51
|
23
|
21
|
12
|
14
|
14
|
13
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Grote Industries, Inc. | 159 |
10 |
| Lutron Technology Company LLC | 2602 |
10 |
| Samsung Electronics Co., Ltd. | 148924 |
8 |
| Samsung Display Co., Ltd. | 36165 |
8 |
| Boe Technology Group Co., Ltd. | 41648 |
7 |
| Infineon Technologies AG | 8279 |
6 |
| International Business Machines Corporation | 61734 |
5 |
| Mitsubishi Electric Corporation | 46870 |
5 |
| Rockwell Automation Technologies, Inc. | 2725 |
5 |
| Signify Holding B.V. | 7683 |
5 |
| AT&T Intellectual Property I, L.P. | 9661 |
4 |
| Robert Bosch GmbH | 43034 |
4 |
| Nichia Corporation | 3770 |
4 |
| BOE Optical Science and Technology Co., Ltd. | 150 |
4 |
| Ziota Technology Inc. | 18 |
4 |
| Koninklijke Philips N.V. | 25125 |
3 |
| Ford Global Technologies, LLC | 20917 |
3 |
| OSRAM GmbH | 2372 |
3 |
| BNSF Railway Company | 474 |
3 |
| Dental Imaging Technologies Corporation | 124 |
3 |
| Other owners | 266 |