- 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: 1452
10-year publication summary
|
105
|
114
|
105
|
139
|
105
|
149
|
148
|
80
|
101
|
31
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Anaergia Inc. | 111 |
40 |
| Veolia Water Solutions & Technologies Support | 547 |
30 |
| Evoqua Water Technologies LLC | 904 |
24 |
| Kurita Water Industries Ltd. | 1110 |
20 |
| Paques I.P. B.V. | 68 |
20 |
| BL Technologies, Inc. | 831 |
17 |
| Doosan Heavy Industries & Construction Co., Ltd. | 604 |
15 |
| Nanjing University | 646 |
12 |
| Cambrian Innovation Inc. | 29 |
11 |
| Voith Patent GmbH | 2727 |
11 |
| University of South Florida | 1817 |
9 |
| S.g.t.-sustainable Green Technologies Ltd | 12 |
9 |
| Beijing University of Technology | 437 |
8 |
| BKT Co., Ltd. | 66 |
8 |
| Meri Environmental Solutions GmbH | 43 |
8 |
| Yara International ASA | 753 |
8 |
| Bion Environmental Technologies, Inc. | 8 |
7 |
| Degremont | 103 |
7 |
| Kubota Corporation | 3054 |
7 |
| Nanyang Technological University | 1739 |
7 |
| Other owners | 1174 |