- All sections
- C - Chemistrymetallurgy
- C02F - Treatment of water, waste water, sewage, or sludge
- C02F 1/38 - Treatment of water, waste water, or sewage by centrifugal separation
Patent holdings for IPC class C02F 1/38
Total number of patents in this class: 862
10-year publication summary
|
87
|
89
|
70
|
80
|
70
|
57
|
54
|
59
|
67
|
29
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Qwtip LLC | 69 |
26 |
| Evoqua Water Technologies LLC | 930 |
16 |
| Hayward Industries, Inc. | 678 |
13 |
| Veolia Water Solutions & Technologies Support | 533 |
11 |
| Panasonic Intellectual Property Management Co., Ltd. | 33997 |
9 |
| Smith & Loveless, Inc. | 120 |
9 |
| Eco World Water Corp | 16 |
9 |
| Revive Environmental Technology, LLC | 36 |
8 |
| Alfa Laval Corporate AB | 1337 |
7 |
| Ecolab USA Inc. | 5796 |
7 |
| Saudi Arabian Oil Company | 14235 |
7 |
| Veolia Water Technologies, Inc. | 81 |
7 |
| Halliburton Energy Services, Inc. | 21338 |
6 |
| Chevron U.S.A. Inc. | 4140 |
6 |
| Clean TeQ Pty Ltd | 20 |
6 |
| Safe Foods Corporation | 86 |
6 |
| Sudhin Biopharma | 11 |
6 |
| Evonik Operations GmbH | 4362 |
6 |
| General Electric Company | 13899 |
5 |
| China Petroleum & Chemical Corporation | 2152 |
5 |
| Other owners | 687 |