- All sections
- B - Performing operations; transporting
- B01D - Separation
- B01D 35/147 - Bypass or safety valves
Patent holdings for IPC class B01D 35/147
Total number of patents in this class: 655
10-year publication summary
|
44
|
60
|
59
|
61
|
60
|
58
|
66
|
61
|
39
|
22
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| MANN+HUMMEL GmbH | 1682 |
52 |
| Donaldson Company, Inc. | 1513 |
46 |
| HYDAC Filtertechnik GmbH | 294 |
27 |
| Cummins Filtration IP, Inc. | 812 |
26 |
| Rt-filtertechnik GmbH | 44 |
21 |
| Hengst SE & Co. KG | 24 |
17 |
| LG Electronics Inc. | 69257 |
16 |
| MAHLE International GmbH | 2670 |
16 |
| Hengst SE | 126 |
15 |
| Yamashin-filter Corp. | 115 |
14 |
| Caterpillar Inc. | 8877 |
13 |
| Baldwin Filters, Inc. | 257 |
11 |
| Hubb Filters, Inc. | 10 |
9 |
| UNGER Marketing International, LLC | 304 |
9 |
| Hengst GmbH & Co. KG | 64 |
8 |
| Hamilton Sundstrand Corporation | 4525 |
7 |
| Schroeder Industries, LLC | 48 |
7 |
| Samsung Electronics Co., Ltd. | 131630 |
6 |
| Deere & Company | 6845 |
6 |
| Robert Bosch GmbH | 40953 |
6 |
| Other owners | 323 |