Patent holdings for IPC class H02J 3/28

Total number of patents in this class: 1142

10-year publication summary

86
81
81
103
132
80
104
116
137
24
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Principal owners for this class

Owner
All patents
This class
Strong Force TX Portfolio 2018, LLC
144
37
Siemens AG
24606
20
Hitachi, Ltd.
15291
14
State Grid Corporation of China
1350
12
Xi'an Thermal Power Research Institute Co., Ltd.
306
12
Enel X North America, Inc.
126
10
Hitachi Energy Ltd.
2261
10
NEC Corporation
34721
9
Kyocera Corporation
13445
9
ABB Schweiz AG
6794
9
Contemporary Amperex Technology Co., Limited
5573
9
General Electric Company
17222
8
Robert Bosch GmbH
41971
8
Mitsubishi Electric Corporation
45128
8
Toshiba Energy Systems & Solutions Corp.
1044
8
Siemens Energy Global GmbH & Co. KG
2875
8
Panasonic Intellectual Property Management Co., Ltd.
30119
7
Johnson Controls Technology Company
1470
7
Flexgen Power Systems, Inc.
42
7
Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
2905
7
Other owners 923