- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F16C - Shafts; flexible shafts; mechanical means for transmitting movement in a flexible sheathing; elements of crankshaft mechanisms; pivots; pivotal connections; rotary engineering elements other than gearing, coupling, clutch or brake elements; bearings
- F16C 33/74 - Sealings of sliding-contact bearings
Patent holdings for IPC class F16C 33/74
Total number of patents in this class: 504
10-year publication summary
|
50
|
34
|
45
|
44
|
36
|
37
|
35
|
22
|
11
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Oiles Corporation | 510 |
63 |
| Eagle Industry Co., Ltd. | 1099 |
51 |
| NTN Corporation | 4980 |
25 |
| Roller Bearing Company of America, Inc. | 211 |
18 |
| Nidec Corporation | 2599 |
14 |
| Caterpillar Inc. | 9149 |
13 |
| New Way Machine Components, Inc. | 39 |
11 |
| Aktiebolaget SKF | 2834 |
10 |
| Schaeffler Technologies AG & Co. KG | 9364 |
9 |
| Minebea Mitsumi Inc. | 1611 |
9 |
| Seal-ryt Corporation | 32 |
7 |
| Nidec GPM GmbH | 140 |
6 |
| Hamilton Sundstrand Corporation | 4719 |
5 |
| EVault, Inc. | 55 |
5 |
| Hyundai Mobis Co., Ltd. | 2915 |
5 |
| MAHLE International GmbH | 2690 |
5 |
| National Oilwell Varco, L.P. | 1625 |
5 |
| Bifröst Research and Development B.V. | 6 |
5 |
| Robert Bosch GmbH | 41717 |
4 |
| Diamet Corporation | 89 |
4 |
| Other owners | 230 |