- All sections
- B - Performing operationstransporting
- B01D - Separation
- B01D 33/68 - Retarding cake deposition on the filter during the filtration period, e.g. using stirrers
Patent holdings for IPC class B01D 33/68
Total number of patents in this class: 22
10-year publication summary
|
0
|
2
|
4
|
2
|
3
|
4
|
4
|
1
|
2
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kadant Black Clawson LLC | 38 |
4 |
| Xeros Limited | 137 |
3 |
| Nippon Oil Pump Co., Ltd. | 29 |
2 |
| Alfa Laval Corporate AB | 1302 |
1 |
| Englo, Inc. | 4 |
1 |
| Gaudfrin | 20 |
1 |
| National Oilwell Varco, L.P. | 1646 |
1 |
| Omega Liquid Waste Solutions Inc. | 7 |
1 |
| Pall Corporation | 335 |
1 |
| Prime Services Trustee Limited | 10 |
1 |
| Universiteit Twente | 217 |
1 |
| Z-filter Pty Ltd | 4 |
1 |
| Continuus Pharmaceuticals, Inc. | 10 |
1 |
| Lappeenrannan-lahden Teknillinen Yliopisto Lut | 58 |
1 |
| ESS Holding GmbH | 22 |
1 |
| Innovation Research Institute of Zhejiang University of Technology, Shengzhou | 6 |
1 |
| Other owners | 0 |