- 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 33/80 - Labyrinth sealings
Patent holdings for IPC class F16C 33/80
Total number of patents in this class: 519
10-year publication summary
43
|
65
|
41
|
52
|
48
|
42
|
33
|
43
|
33
|
9
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
NTN Corporation | 5008 |
82 |
Aktiebolaget SKF | 2700 |
69 |
Schaeffler Technologies AG & Co. KG | 8880 |
41 |
NOK Corporation | 2108 |
41 |
NSK Ltd. | 2719 |
27 |
JTEKT Corporation | 2423 |
20 |
Amsted Rail Company, Inc. | 432 |
19 |
Aktiebolaget SKF | 98 |
11 |
Schaeffler Technologies GmbH & Co. KG | 846 |
10 |
Uchiyama Manufacturing Corp. | 119 |
8 |
Schaeffler KG | 960 |
7 |
Minebea Mitsumi Inc. | 1461 |
7 |
IHI Corporation | 3268 |
4 |
SKF Australia Pty Ltd | 5 |
4 |
NTN-SNR Roulements | 96 |
3 |
Altria Client Services LLC | 1866 |
3 |
Audi AG | 7153 |
3 |
Garlock Sealing Technologies LLC | 149 |
3 |
IL Jin Global Co., Ltd. | 29 |
3 |
ILJIN GLOBAL CO., LTD. a legal entity | 73 |
3 |
Other owners | 151 |