- 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: 837
10-year publication summary
|
79
|
77
|
65
|
73
|
64
|
53
|
45
|
52
|
60
|
7
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Qwtip LLC | 68 |
26 |
| Evoqua Water Technologies LLC | 924 |
16 |
| Hayward Industries, Inc. | 670 |
13 |
| Panasonic Intellectual Property Management Co., Ltd. | 33033 |
11 |
| Veolia Water Solutions & Technologies Support | 535 |
11 |
| Smith & Loveless, Inc. | 116 |
9 |
| Eco World Water Corp | 14 |
8 |
| Alfa Laval Corporate AB | 1321 |
7 |
| Ecolab USA Inc. | 5673 |
7 |
| Saudi Arabian Oil Company | 13865 |
7 |
| Veolia Water Technologies, Inc. | 81 |
7 |
| Revive Environmental Technology, LLC | 35 |
7 |
| Halliburton Energy Services, Inc. | 21115 |
6 |
| Chevron U.S.A. Inc. | 4050 |
6 |
| Clean TeQ Pty Ltd | 20 |
6 |
| D.C. Water & Sewer Authority | 26 |
6 |
| Safe Foods Corporation | 85 |
6 |
| Sudhin Biopharma | 13 |
6 |
| General Electric Company | 13777 |
5 |
| China Petroleum & Chemical Corporation | 2002 |
5 |
| Other owners | 662 |