- 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: 393
10-year publication summary
|
1
|
3
|
1
|
5
|
2
|
14
|
47
|
97
|
120
|
65
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Topsoe A/S | 876 |
38 |
| NGK Insulators, Ltd. | 4920 |
36 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10837 |
29 |
| Bloom Energy Corporation | 652 |
27 |
| Ceres Intellectual Property Company Limited | 261 |
17 |
| Mitsubishi Heavy Industries, Ltd. | 8647 |
16 |
| Kyocera Corporation | 13689 |
12 |
| Samsung Electro-mechanics Co., Ltd. | 5512 |
11 |
| Linde GmbH | 1254 |
9 |
| Mitsubishi Power, Ltd. | 1757 |
9 |
| Utility Global, Inc. | 100 |
8 |
| Schlumberger Technology Corporation | 10627 |
7 |
| AVL List GmbH | 1290 |
6 |
| Haldor Topsøe A/S | 662 |
6 |
| Schlumberger Canada Limited | 7235 |
5 |
| Honda Motor Co., Ltd. | 25137 |
5 |
| FuelCell Energy, Inc. | 330 |
5 |
| Services Petroliers Schlumberger | 5756 |
5 |
| Niterra Co., Ltd. | 1249 |
5 |
| Schlumberger Technology B.v. | 5148 |
4 |
| Other owners | 133 |