- All sections
- B - Performing operationstransporting
- B01D - Separation
- B01D 29/39 - Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups Filtering elements therefor with hollow discs side by side on, or around, one or more tubes, e.g. of the leaf type
Patent holdings for IPC class B01D 29/39
Total number of patents in this class: 73
10-year publication summary
|
13
|
4
|
7
|
8
|
8
|
2
|
7
|
2
|
1
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Alfa Laval Corporate AB | 1327 |
5 |
| Awa Paper Mfg. Co., Ltd. | 14 |
4 |
| Gaudfrin | 21 |
4 |
| 3m Innovative Properties Company | 17730 |
3 |
| Drm, Dr. Muller AG | 29 |
3 |
| Sumitomo Chemical Company, Limited | 9109 |
2 |
| Uop LLC | 4259 |
2 |
| Atomic Energy of Canada Limited | 130 |
2 |
| Cummins Filtration IP, Inc. | 805 |
2 |
| Fuji Filter Manufacturing Co., Ltd. | 55 |
2 |
| Kabushiki Kaisha Toukai Spring Seisakusho | 2 |
2 |
| Nagase & Co., Ltd. | 227 |
2 |
| Sefar BDH Inc. | 5 |
2 |
| Solecta, Inc. | 17 |
2 |
| LUAN, Song | 6 |
2 |
| Robert Bosch GmbH | 43063 |
1 |
| Agilent Technologies, Inc. | 2644 |
1 |
| Ant Corporation | 4 |
1 |
| Aqseptence Group, Inc. | 86 |
1 |
| Baski Water Instruments, Inc. | 9 |
1 |
| Other owners | 29 |