- 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: 354
10-year publication summary
|
1
|
3
|
1
|
5
|
2
|
14
|
46
|
97
|
119
|
32
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Topsoe A/S | 864 |
34 |
| NGK Insulators, Ltd. | 4846 |
29 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10729 |
27 |
| Bloom Energy Corporation | 640 |
25 |
| Mitsubishi Heavy Industries, Ltd. | 8569 |
16 |
| Ceres Intellectual Property Company Limited | 258 |
15 |
| Kyocera Corporation | 13519 |
11 |
| Samsung Electro-mechanics Co., Ltd. | 5327 |
10 |
| Linde GmbH | 1242 |
9 |
| Mitsubishi Power, Ltd. | 1747 |
9 |
| Utility Global, Inc. | 96 |
8 |
| Schlumberger Technology Corporation | 10487 |
6 |
| Honda Motor Co., Ltd. | 25093 |
5 |
| AVL List GmbH | 1275 |
5 |
| Haldor Topsøe A/S | 661 |
5 |
| Schlumberger Canada Limited | 7134 |
4 |
| Mitsubishi Electric Corporation | 45328 |
4 |
| Battelle Energy Alliance, LLC | 574 |
4 |
| FuelCell Energy, Inc. | 329 |
4 |
| Services Petroliers Schlumberger | 5698 |
4 |
| Other owners | 120 |