- All sections
- C - Chemistrymetallurgy
- C02F - Treatment of water, waste water, sewage, or sludge
- C02F 3/26 - Activated sludge processes using pure oxygen or oxygen-rich gas
Patent holdings for IPC class C02F 3/26
Total number of patents in this class: 74
10-year publication summary
|
4
|
9
|
10
|
11
|
15
|
6
|
4
|
6
|
2
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Praxair Technology, Inc. | 1228 |
7 |
| Kurita Water Industries Ltd. | 1261 |
5 |
| Veolia Water Solutions & Technologies Support | 532 |
4 |
| Prosper Technologies, LLC | 31 |
3 |
| Chinese Research Academy of Environmental Sciences | 128 |
2 |
| Evoqua Water Technologies LLC | 930 |
2 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 4053 |
2 |
| Linde Aktiengesellschaft | 1435 |
2 |
| Schlumberger Technology Corporation | 11485 |
1 |
| Schlumberger Canada Limited | 7558 |
1 |
| Schlumberger Technology B.v. | 5267 |
1 |
| Uop LLC | 4315 |
1 |
| American Air Liquide, Inc. | 264 |
1 |
| Arizona Board of Regents on behalf of Arizona State University | 2853 |
1 |
| Ceres Intellectual Property Company Limited | 253 |
1 |
| Clean Power Hydrogen Limited | 5 |
1 |
| Guangdong Brunp Recycling Technology Co., Ltd | 1249 |
1 |
| H.C. Development S.r.l. | 2 |
1 |
| Hunan Brunp Recycling Technology Co., Ltd. | 1218 |
1 |
| IER Environmental Services, Inc. | 2 |
1 |
| Other owners | 35 |