- All sections
- C - Chemistry; metallurgy
- C02F - Treatment of water, waste water, sewage, or sludge
- C02F 3/28 - Anaerobic digestion processes
Patent holdings for IPC class C02F 3/28
Total number of patents in this class: 1510
10-year publication summary
|
114
|
105
|
139
|
105
|
149
|
149
|
81
|
103
|
106
|
4
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Anaergia Inc. | 110 |
39 |
| Veolia Water Solutions & Technologies Support | 543 |
30 |
| Evoqua Water Technologies LLC | 904 |
26 |
| Paques I.P. B.V. | 68 |
20 |
| Kurita Water Industries Ltd. | 1156 |
19 |
| BL Technologies, Inc. | 849 |
18 |
| Cambrian Innovation Inc. | 30 |
12 |
| Nanjing University | 692 |
12 |
| Voith Patent GmbH | 2736 |
11 |
| University of South Florida | 1827 |
9 |
| Beijing University of Technology | 470 |
9 |
| S.g.t.-sustainable Green Technologies Ltd | 12 |
9 |
| Bion Environmental Technologies, Inc. | 9 |
8 |
| BKT Co., Ltd. | 65 |
8 |
| Meri Environmental Solutions GmbH | 41 |
8 |
| Yara International ASA | 798 |
8 |
| Doosan Enerbility Co., Ltd. | 208 |
8 |
| The Regents of the University of Michigan | 4578 |
7 |
| Doosan Heavy Industries & Construction Co., Ltd. | 585 |
7 |
| Kubota Corporation | 3495 |
7 |
| Other owners | 1235 |