- All sections
- B - Performing operationstransporting
- B01D - Separation
- B01D 21/30 - Control equipment
Patent holdings for IPC class B01D 21/30
Total number of patents in this class: 412
10-year publication summary
|
37
|
34
|
38
|
44
|
36
|
30
|
23
|
17
|
16
|
5
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kurita Water Industries Ltd. | 1249 |
22 |
| Enercorp Engineered Solutions Inc. | 51 |
7 |
| Estar Technologies Ltd | 22 |
6 |
| Sumitomo Metal Mining Co., Ltd. | 1904 |
6 |
| Snorkels IP, LLC | 6 |
6 |
| Stryker Corporation | 5211 |
5 |
| FMC Technologies, Inc. | 602 |
5 |
| Kubota Corporation | 4160 |
5 |
| Liberty Evans, LLC | 11 |
5 |
| Saudi Arabian Oil Company | 13886 |
5 |
| SunCor Energy Inc. | 740 |
5 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6218 |
5 |
| Batfer Investment S.A. | 35 |
5 |
| Evoqua Water Technologies LLC | 922 |
4 |
| Fenwal, Inc. | 690 |
4 |
| Graymont Western Canada Inc. | 51 |
4 |
| Jentek Water Treatment, Inc. | 5 |
4 |
| Metawater Co., Ltd. | 202 |
4 |
| Toshiba Infrastructure Systems & Solutions Corporation | 699 |
4 |
| Infinite Automated Solutions LLC | 5 |
4 |
| Other owners | 297 |