- All sections
- B - Performing operationstransporting
- B01D - Separation
- B01D 35/147 - Bypass or safety valves
Patent holdings for IPC class B01D 35/147
Total number of patents in this class: 691
10-year publication summary
|
60
|
57
|
60
|
61
|
57
|
63
|
62
|
41
|
51
|
28
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| MANN+HUMMEL GmbH | 1760 |
49 |
| Donaldson Company, Inc. | 1601 |
45 |
| HYDAC Filtertechnik GmbH | 296 |
30 |
| Cummins Filtration IP, Inc. | 808 |
28 |
| Rt-filtertechnik GmbH | 45 |
22 |
| LG Electronics Inc. | 73344 |
20 |
| Hengst SE | 162 |
18 |
| Hengst SE & Co. KG | 23 |
16 |
| MAHLE International GmbH | 2778 |
16 |
| Caterpillar Inc. | 9579 |
15 |
| Yamashin-filter Corp. | 128 |
13 |
| Samsung Electronics Co., Ltd. | 146811 |
9 |
| Baldwin Filters, Inc. | 244 |
9 |
| Hubb Filters, Inc. | 10 |
9 |
| M.P. Filtri S.p.A. | 32 |
9 |
| Schroeder Industries, LLC | 51 |
9 |
| UNGER Marketing International, LLC | 337 |
9 |
| Hamilton Sundstrand Corporation | 4891 |
8 |
| Hengst GmbH & Co. KG | 47 |
8 |
| Deere & Company | 7625 |
7 |
| Other owners | 342 |