- All sections
- C - Chemistry; metallurgy
- C01B - Non-metallic elements; compounds thereof
- C01B 13/02 - Preparation of oxygen
Patent holdings for IPC class C01B 13/02
Total number of patents in this class: 982
10-year publication summary
|
78
|
86
|
73
|
91
|
59
|
52
|
63
|
78
|
68
|
5
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Praxair Technology, Inc. | 1330 |
67 |
| Koninklijke Philips N.V. | 23999 |
22 |
| Diehl Aviation Gilching GmbH | 38 |
17 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 3599 |
15 |
| Teijin Pharma Limited | 251 |
11 |
| Canon Kabushiki Kaisha | 6938 |
11 |
| California Institute of Technology | 3936 |
10 |
| Air Products and Chemicals, Inc. | 1435 |
10 |
| AVOX Systems Inc. | 65 |
9 |
| Inogen, Inc. | 102 |
9 |
| Koninklijke Philips Electronics N.V. | 10844 |
8 |
| Topsoe A/S | 829 |
8 |
| Korea Institute of Energy Research | 831 |
7 |
| Haldor Topsøe A/S | 674 |
7 |
| Philips Intellectual Property & Standards GmbH | 2112 |
7 |
| Shenzhen Good Family Sporting Goods Chain Management Co., Ltd | 12 |
7 |
| Canon Inc. | 38148 |
6 |
| Panasonic Intellectual Property Management Co., Ltd. | 29733 |
6 |
| Hamilton Sundstrand Corporation | 4728 |
6 |
| Terumo Kabushiki Kaisha | 5398 |
6 |
| Other owners | 733 |