- 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: 513
10-year publication summary
55
|
50
|
34
|
45
|
44
|
36
|
37
|
40
|
21
|
5
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Oiles Corporation | 515 |
63 |
Eagle Industry Co., Ltd. | 1062 |
54 |
NTN Corporation | 5008 |
26 |
Roller Bearing Company of America, Inc. | 206 |
17 |
Nidec Corporation | 2579 |
15 |
Caterpillar Inc. | 8877 |
13 |
Aktiebolaget SKF | 2700 |
10 |
New Way Machine Components, Inc. | 41 |
10 |
Minebea Mitsumi Inc. | 1461 |
10 |
Schaeffler Technologies AG & Co. KG | 8880 |
8 |
Seal-ryt Corporation | 32 |
7 |
Nidec GPM GmbH | 152 |
6 |
Hamilton Sundstrand Corporation | 4525 |
5 |
EVault, Inc. | 62 |
5 |
Hyundai Mobis Co., Ltd. | 2668 |
5 |
MAHLE International GmbH | 2670 |
5 |
National Oilwell Varco, L.P. | 1604 |
5 |
Bifröst Research and Development B.V. | 6 |
5 |
Robert Bosch GmbH | 40953 |
4 |
Diamet Corporation | 93 |
4 |
Other owners | 236 |