- All sections
- C - Chemistrymetallurgy
- C01B - Non-metallic elementscompounds thereof
- C01B 13/02 - Preparation of oxygen
Patent holdings for IPC class C01B 13/02
Total number of patents in this class: 1034
10-year publication summary
|
86
|
73
|
92
|
60
|
52
|
65
|
80
|
77
|
51
|
47
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Praxair Technology, Inc. | 1203 |
60 |
| Koninklijke Philips N.V. | 26108 |
22 |
| Diehl Aviation Gilching GmbH | 39 |
17 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 4148 |
15 |
| Teijin Pharma Limited | 253 |
11 |
| Canon Kabushiki Kaisha | 7417 |
11 |
| California Institute of Technology | 4044 |
10 |
| Air Products and Chemicals, Inc. | 1476 |
10 |
| Inogen, Inc. | 108 |
10 |
| AVOX Systems Inc. | 65 |
9 |
| Topsoe A/S | 1080 |
9 |
| Koninklijke Philips Electronics N.V. | 7082 |
8 |
| Canon Inc. | 44490 |
7 |
| Japan Technological Research Association of Artificial Photosynthetic Chemical Process | 53 |
7 |
| Korea Institute of Energy Research | 902 |
7 |
| Korea Research Institute of Chemical Technology | 1493 |
7 |
| Qwtip LLC | 69 |
7 |
| SABIC Global Technologies B.V. | 4632 |
7 |
| Haldor Topsøe A/S | 629 |
7 |
| Philips Intellectual Property & Standards GmbH | 1566 |
7 |
| Other owners | 786 |