- All sections
- H - Electricity
- H01H - Electric switches; relays; selectors; emergency protective devices
- H01H 33/59 - Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the ac cycle
Patent holdings for IPC class H01H 33/59
Total number of patents in this class: 711
10-year publication summary
55
|
71
|
68
|
61
|
42
|
71
|
33
|
52
|
38
|
8
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Mitsubishi Electric Corporation | 43934 |
81 |
Siemens AG | 24990 |
54 |
Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6275 |
31 |
Siemens Energy Global GmbH & Co. KG | 2775 |
31 |
Eaton Intelligent Power Limited | 6113 |
30 |
General Electric Technology GmbH | 1657 |
25 |
Hitachi Energy Ltd. | 1921 |
23 |
ABB Schweiz AG | 6321 |
22 |
ABB Technology AG | 1301 |
19 |
Alstom Technology Ltd | 1196 |
18 |
Lsis Co., Ltd. | 834 |
13 |
Toshiba Energy Systems & Solutions Corp. | 954 |
13 |
Supergrid Institute | 81 |
13 |
Sony Corporation | 32931 |
12 |
Ellenberger & Poensgen GmbH | 229 |
11 |
Hyosung Heavy Industries Corporation | 234 |
10 |
Toshiba Corporation | 12017 |
9 |
Hitachi, Ltd. | 16452 |
8 |
ARC Suppression Technologies | 40 |
7 |
GE Energy Power Conversion Technology Ltd | 407 |
7 |
Other owners | 274 |