- 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: 377
10-year publication summary
|
78
|
76
|
51
|
24
|
21
|
12
|
16
|
14
|
14
|
7
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Grote Industries, Inc. | 169 |
11 |
| Lutron Technology Company LLC | 2795 |
10 |
| Samsung Electronics Co., Ltd. | 160170 |
8 |
| Samsung Display Co., Ltd. | 39441 |
8 |
| Boe Technology Group Co., Ltd. | 44876 |
7 |
| Infineon Technologies AG | 8442 |
6 |
| International Business Machines Corporation | 62935 |
5 |
| Mitsubishi Electric Corporation | 48587 |
5 |
| Rockwell Automation Technologies, Inc. | 2801 |
5 |
| Signify Holding B.V. | 8278 |
5 |
| AT&T Intellectual Property I, L.P. | 10091 |
4 |
| Robert Bosch GmbH | 44459 |
4 |
| Nichia Corporation | 3922 |
4 |
| BOE Optical Science and Technology Co., Ltd. | 150 |
4 |
| Shanghai Bright Power Semiconductor Co., Ltd. | 92 |
4 |
| Ziota Technology Inc. | 18 |
4 |
| Koninklijke Philips N.V. | 26215 |
3 |
| Ford Global Technologies, LLC | 21686 |
3 |
| OSRAM GmbH | 2168 |
3 |
| BNSF Railway Company | 570 |
3 |
| Other owners | 271 |