- All sections
- B - Performing operations; transporting
- B01D - Separation
- B01D 37/02 - Precoating the filtering elements or material; Addition of filter aids to the liquid being filtered
Patent holdings for IPC class B01D 37/02
Total number of patents in this class: 342
10-year publication summary
|
25
|
18
|
27
|
31
|
28
|
26
|
23
|
27
|
16
|
9
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Cidra Corporate Services, Inc. | 208 |
14 |
| Cidra Corporate Services, LLC | 91 |
10 |
| Blue Skies Global LLC | 16 |
10 |
| Imerys Filtration Minerals, Inc. | 64 |
8 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6275 |
8 |
| Cummins Filtration IP, Inc. | 812 |
6 |
| Imerys USA, Inc. | 135 |
6 |
| Rhodia Operations | 1645 |
6 |
| Sartorius Stedim Biotech GmbH | 774 |
6 |
| BASF SE | 19740 |
5 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
5 |
| EP Minerals, LLC | 97 |
5 |
| KHS GmbH | 1381 |
4 |
| Sogefi Filtration France | 7 |
4 |
| Suez International | 304 |
4 |
| Honeywell International Inc. | 13799 |
3 |
| EMD Millipore Corporation | 657 |
3 |
| Bauer Energy Design, Inc. | 5 |
3 |
| CHRETO ApS | 11 |
3 |
| Kemira Oyj | 1167 |
3 |
| Other owners | 226 |