- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F01M - Lubricating of machines or engines in general; lubricating internal-combustion engines; crankcase ventilating
- F01M 13/04 - Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
Patent holdings for IPC class F01M 13/04
Total number of patents in this class: 997
10-year publication summary
|
90
|
119
|
93
|
114
|
103
|
105
|
73
|
61
|
39
|
18
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Cummins Filtration IP, Inc. | 812 |
78 |
| Honda Motor Co., Ltd. | 24537 |
37 |
| Alfa Laval Corporate AB | 1265 |
30 |
| MAHLE International GmbH | 2670 |
30 |
| Tokyo ROKI Co., Ltd. | 67 |
28 |
| Ford Global Technologies, LLC | 19702 |
25 |
| MANN+HUMMEL GmbH | 1682 |
24 |
| Donaldson Company, Inc. | 1513 |
21 |
| Toyota Motor Corporation | 28582 |
19 |
| Kubota Corporation | 3054 |
19 |
| Nifco Inc. | 1103 |
19 |
| Reinz-Dichtungs-GmbH | 245 |
19 |
| ThyssenKrupp Presta Teccenter AG | 241 |
19 |
| Alfdex AB | 43 |
18 |
| Hengst GmbH & Co. KG | 64 |
17 |
| Isuzu Motors Limited | 2158 |
17 |
| Ufi Filters S.p.A. | 196 |
17 |
| Toyota Boshoku Kabushiki Kaisha | 1304 |
16 |
| ElringKlinger AG | 487 |
15 |
| Hengst SE | 126 |
14 |
| Other owners | 515 |