- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F16C - Shaftsflexible shaftsmechanical means for transmitting movement in a flexible sheathingelements of crankshaft mechanismspivotspivotal connectionsrotary engineering elements other than gearing, coupling, clutch or brake elementsbearings
- F16C 33/80 - Labyrinth sealings
Patent holdings for IPC class F16C 33/80
Total number of patents in this class: 574
10-year publication summary
|
41
|
52
|
48
|
42
|
33
|
46
|
38
|
39
|
28
|
13
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Aktiebolaget SKF | 3091 |
88 |
| NTN Corporation | 4934 |
85 |
| Schaeffler Technologies AG & Co. KG | 10761 |
55 |
| NOK Corporation | 2288 |
38 |
| NSK Ltd. | 2826 |
29 |
| Amsted Rail Company, Inc. | 429 |
20 |
| JTEKT Corporation | 2560 |
19 |
| Uchiyama Manufacturing Corp. | 132 |
15 |
| Aktiebolaget SKF | 100 |
11 |
| Schaeffler Technologies GmbH & Co. KG | 847 |
10 |
| Minebea Mitsumi Inc. | 1892 |
9 |
| IL Jin Global Co., Ltd. | 45 |
5 |
| Audi AG | 7488 |
4 |
| IHI Corporation | 3527 |
4 |
| Nakanishi Metal Works Co., Ltd. | 125 |
4 |
| SKF Australia Pty Ltd | 7 |
4 |
| Pratt & Whitney Canada Corp. | 5331 |
3 |
| NTN-SNR Roulements | 85 |
3 |
| Altria Client Services LLC | 2369 |
3 |
| Garlock Sealing Technologies LLC | 145 |
3 |
| Other owners | 162 |