- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F16J - Pistons; cylinders; pressure vessels in general; sealings
- F16J 15/3244 - Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with hydrodynamic pumping action
Patent holdings for IPC class F16J 15/3244
Total number of patents in this class: 114
10-year publication summary
6
|
10
|
13
|
29
|
12
|
19
|
7
|
8
|
5
|
4
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
NOK Corporation | 2108 |
46 |
Trelleborg Sealing Solutions Germany GmbH | 183 |
8 |
Aktiebolaget SKF | 2700 |
7 |
Kalsi Engineering, Inc. | 50 |
6 |
Carl Freudenberg KG | 1346 |
3 |
Freudenberg-NOK General Partnership | 178 |
3 |
KACO GmbH + Co. KG | 48 |
3 |
NOF Corporation | 194 |
3 |
Caterpillar Inc. | 8877 |
2 |
Stein Seal Company | 69 |
2 |
Siemens Gamesa Renewable Energy A/S | 1647 |
2 |
General Electric Company | 18133 |
1 |
Deere & Company | 6845 |
1 |
Eaton Corporation | 1839 |
1 |
Robert Bosch GmbH | 40953 |
1 |
ZF Friedrichshafen AG | 6820 |
1 |
Rolls-Royce PLC | 2944 |
1 |
NTN Corporation | 5008 |
1 |
Audi AG | 7153 |
1 |
Bruss Sealing Systems GmbH | 18 |
1 |
Other owners | 20 |