- All sections
- H - Electricity
- H02H - Emergency protective circuit arrangements
- H02H 7/045 - Differential protection of transformers
Patent holdings for IPC class H02H 7/045
Total number of patents in this class: 88
10-year publication summary
6
|
5
|
9
|
5
|
9
|
5
|
7
|
8
|
3
|
1
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Siemens AG | 24990 |
9 |
ABB Schweiz AG | 6321 |
8 |
Mitsubishi Electric Corporation | 43934 |
6 |
NR Electric Co., Ltd. | 302 |
4 |
NR Engineering Co., Ltd | 266 |
4 |
Schweitzer Engineering Laboratories, Inc. | 920 |
4 |
Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6275 |
4 |
Hitachi Energy Ltd. | 1921 |
4 |
Hubbell Incorporated | 3052 |
3 |
Toshiba Corporation | 12017 |
2 |
Delta Electronics, Inc. | 2401 |
2 |
ABB Technology AG | 1301 |
2 |
Kodensya Co., Ltd. | 3 |
2 |
S & C Electric Co. | 282 |
2 |
GE Infrastructure Technology, LLC | 5873 |
2 |
Webasto Charging Systems, Inc. | 73 |
2 |
TechHold, LLC | 45 |
2 |
ABB Technology Ltd | 490 |
2 |
Bombardier Transportation GmbH | 682 |
1 |
General Electric Technology GmbH | 1657 |
1 |
Other owners | 22 |