- All sections
- G - Physics
- G01R - Measuring electric variablesmeasuring magnetic variables
- G01R 31/34 - Testing dynamo-electric machines
Patent holdings for IPC class G01R 31/34
Total number of patents in this class: 2009
10-year publication summary
|
136
|
131
|
155
|
156
|
161
|
164
|
171
|
135
|
153
|
87
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mitsubishi Electric Corporation | 46197 |
69 |
| Siemens AG | 24453 |
62 |
| ABB Schweiz AG | 6987 |
57 |
| Tatsumi Ryoki Co., Ltd | 99 |
47 |
| Robert Bosch GmbH | 42705 |
46 |
| GE Infrastructure Technology, LLC | 6233 |
32 |
| FANUC Corporation | 6708 |
27 |
| GM Global Technology Operations LLC | 15095 |
26 |
| Hitachi, Ltd. | 15513 |
25 |
| Texas Instruments Incorporated | 19443 |
21 |
| Siemens Energy, Inc. | 1713 |
21 |
| Denso Corporation | 24355 |
19 |
| Toshiba Corporation | 12367 |
18 |
| AAC Acoustic Technologies (Shenzhen) Co., Ltd. | 1939 |
17 |
| Schweitzer Engineering Laboratories, Inc. | 915 |
17 |
| Hyundai Motor Company | 22086 |
16 |
| Eaton Intelligent Power Limited | 5992 |
16 |
| General Electric Company | 13810 |
13 |
| Samsung Electronics Co., Ltd. | 146811 |
12 |
| Toshiba Mitsubishi-Electric Industrial Systems Corporation | 997 |
12 |
| Other owners | 1436 |