• All sections
  • H - Electricity
  • H02H - Emergency protective circuit arrangements
  • H02H 3/38 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection responsive to both voltage and currentEmergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection responsive to phase angle between voltage and current

Patent holdings for IPC class H02H 3/38

Total number of patents in this class: 222

10-year publication summary

24
25
20
30
18
11
14
4
17
3
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Principal owners for this class

Owner
All patents
This class
Siemens AG
24606
20
Eaton Intelligent Power Limited
6343
9
General Electric Technology GmbH
1603
8
Hubbell Incorporated
3179
7
ABB Technology AG
1264
6
Schweitzer Engineering Laboratories, Inc.
919
6
Mitsubishi Electric Corporation
45128
5
ABB Schweiz AG
6794
5
Trane International Inc.
1154
5
Hitachi Energy Ltd.
2261
5
ABB Research Ltd.
906
4
WiTricity Corporation
521
4
STMicroelectronics S.r.l.
3640
3
Applied Invention, LLC
59
3
Cummins Power Generation IP, Inc.
278
3
Ellenberger & Poensgen GmbH
233
3
Liebherr-components Biberach GmbH
226
3
Littelfuse, Inc.
781
3
National Oilwell Varco, L.P.
1628
3
Schneider Electric Industries SAS
1452
3
Other owners 114