- All sections
- C - Chemistry; metallurgy
- C25B - Electrolytic or electrophoretic processes for the production of compounds or non- metals; apparatus therefor
- C25B 13/02 - Diaphragms; Spacing elements characterised by shape or form
Patent holdings for IPC class C25B 13/02
Total number of patents in this class: 409
10-year publication summary
|
22
|
40
|
29
|
24
|
22
|
33
|
35
|
48
|
80
|
32
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Asahi Kasei Kabushiki Kaisha | 2429 |
34 |
| Agfa-Gevaert | 282 |
13 |
| Reinz-Dichtungs-GmbH | 245 |
12 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
10 |
| Toray Industries, Inc. | 6652 |
9 |
| de Nora Permelec Ltd | 152 |
9 |
| Tokuyama Corporation | 1248 |
8 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6275 |
8 |
| Calera Corporation | 107 |
7 |
| Chlorine Engineers Corp., Ltd. | 26 |
7 |
| ThyssenKrupp Uhde Chlorine Engineers (Japan) Ltd. | 13 |
6 |
| Twelve Benefit Corporation | 111 |
6 |
| Agc, Inc. | 4029 |
5 |
| Toshiba Corporation | 12017 |
4 |
| Uop LLC | 4083 |
4 |
| Kawasaki Heavy Industries, Limited | 1524 |
4 |
| W. L. Gore & Associates, Inc. | 2600 |
4 |
| McAlister Technologies, LLC | 127 |
4 |
| Johnson Matthey Hydrogen Technologies Limited | 83 |
4 |
| Hysata Pty Ltd | 13 |
4 |
| Other owners | 247 |