- All sections
- B - Performing operations; transporting
- B01D - Separation
- B01D 29/31 - Self-supporting filtering elements
Patent holdings for IPC class B01D 29/31
Total number of patents in this class: 106
10-year publication summary
|
9
|
12
|
14
|
20
|
20
|
11
|
10
|
9
|
13
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Donaldson Company, Inc. | 1576 |
7 |
| Caterpillar Inc. | 9149 |
6 |
| KX Technologies LLC | 157 |
4 |
| MANN+HUMMEL GmbH | 1720 |
4 |
| Murata Manufacturing Co., Ltd. | 23609 |
3 |
| Marin Scientific Development Company | 6 |
3 |
| Aisan Kogyo Kabushiki Kaisha | 720 |
2 |
| Brita LP | 101 |
2 |
| Filtration Technology Corporation | 47 |
2 |
| King Technology, Inc. | 254 |
2 |
| The Metraflex Company | 48 |
2 |
| Porex Corporation | 93 |
2 |
| UNGER Marketing International, LLC | 310 |
2 |
| Yamashin-filter Corp. | 126 |
2 |
| Zodiac Pool Systems LLC | 360 |
2 |
| C.C. Jensen A/S | 48 |
2 |
| Feltrim Pastoral Company Pty Ltd | 5 |
2 |
| The Procter & Gamble Company | 22148 |
1 |
| Illinois Tool Works Inc. | 11379 |
1 |
| Sharp Corporation | 10194 |
1 |
| Other owners | 54 |