- All sections
- C - Chemistrymetallurgy
- C25B - Electrolytic or electrophoretic processes for the production of compounds or non- metalsapparatus therefor
- C25B 1/042 - Hydrogen or oxygen by electrolysis of water by electrolysis of steam
Patent holdings for IPC class C25B 1/042
Total number of patents in this class: 434
10-year publication summary
|
1
|
3
|
1
|
5
|
2
|
14
|
47
|
97
|
120
|
93
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Topsoe A/S | 892 |
38 |
| NGK Insulators, Ltd. | 4949 |
36 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10923 |
32 |
| Bloom Energy Corporation | 661 |
31 |
| Mitsubishi Heavy Industries, Ltd. | 8712 |
18 |
| Ceres Intellectual Property Company Limited | 263 |
17 |
| Kyocera Corporation | 13800 |
12 |
| Samsung Electro-mechanics Co., Ltd. | 5612 |
11 |
| Schlumberger Technology Corporation | 10705 |
10 |
| Mitsubishi Power, Ltd. | 1760 |
10 |
| Utility Global, Inc. | 101 |
9 |
| Linde GmbH | 1261 |
9 |
| Schlumberger Canada Limited | 7293 |
8 |
| Services Petroliers Schlumberger | 5784 |
8 |
| Schlumberger Technology B.v. | 5166 |
7 |
| Chevron U.S.A. Inc. | 3953 |
6 |
| AVL List GmbH | 1292 |
6 |
| Haldor Topsøe A/S | 659 |
6 |
| Genvia | 20 |
6 |
| Niterra Co., Ltd. | 1271 |
6 |
| Other owners | 148 |