- 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: 798
10-year publication summary
|
81
|
87
|
89
|
70
|
80
|
70
|
56
|
52
|
54
|
26
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Qwtip LLC | 64 |
26 |
| Evoqua Water Technologies LLC | 914 |
14 |
| Hayward Industries, Inc. | 672 |
13 |
| Panasonic Intellectual Property Management Co., Ltd. | 31022 |
11 |
| Veolia Water Solutions & Technologies Support | 535 |
11 |
| Smith & Loveless, Inc. | 109 |
9 |
| Alfa Laval Corporate AB | 1305 |
7 |
| Ecolab USA Inc. | 5456 |
7 |
| Halliburton Energy Services, Inc. | 20769 |
6 |
| Chevron U.S.A. Inc. | 3939 |
6 |
| Clean TeQ Pty Ltd | 21 |
6 |
| D.C. Water & Sewer Authority | 28 |
6 |
| Veolia Water Technologies, Inc. | 77 |
6 |
| Sudhin Biopharma | 13 |
6 |
| New Vision Children's Foundation, Inc. | 12 |
6 |
| China Petroleum & Chemical Corporation | 1874 |
5 |
| ConocoPhillips Company | 1676 |
5 |
| Doosan Heavy Industries & Construction Co., Ltd. | 581 |
5 |
| GM Innovations Limited | 18 |
5 |
| Kemira Oyj | 1197 |
5 |
| Other owners | 633 |