- 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: 425
10-year publication summary
|
39
|
36
|
40
|
48
|
40
|
33
|
24
|
19
|
17
|
19
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kurita Water Industries Ltd. | 1290 |
24 |
| Enercorp Engineered Solutions Inc. | 54 |
7 |
| Estar Technologies Ltd | 22 |
6 |
| Sumitomo Metal Mining Co., Ltd. | 1985 |
6 |
| Snorkels IP, LLC | 6 |
6 |
| Stryker Corporation | 5614 |
5 |
| Fenwal, Inc. | 704 |
5 |
| Kubota Corporation | 4409 |
5 |
| Liberty Evans, LLC | 11 |
5 |
| Saudi Arabian Oil Company | 14305 |
5 |
| SunCor Energy Inc. | 732 |
5 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6169 |
5 |
| Evoqua Water Technologies LLC | 934 |
4 |
| FMC Technologies, Inc. | 618 |
4 |
| Graymont Western Canada Inc. | 54 |
4 |
| Jentek Water Treatment, Inc. | 5 |
4 |
| Metawater Co., Ltd. | 200 |
4 |
| Toshiba Infrastructure Systems & Solutions Corporation | 662 |
4 |
| Infinite Automated Solutions LLC | 5 |
4 |
| Batfer Investment S.A. | 37 |
4 |
| Other owners | 309 |