- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F16J - Pistons; cylinders; pressure vessels in general; sealings
- F16J 15/32 - Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
Patent holdings for IPC class F16J 15/32
Total number of patents in this class: 1656
10-year publication summary
219
|
121
|
67
|
61
|
58
|
48
|
41
|
38
|
18
|
4
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
NOK Corporation | 2108 |
158 |
Aktiebolaget SKF | 2700 |
130 |
Eagle Industry Co., Ltd. | 1062 |
55 |
Schaeffler Technologies AG & Co. KG | 8880 |
47 |
NTN Corporation | 5008 |
41 |
Robert Bosch GmbH | 40953 |
37 |
Carl Freudenberg KG | 1346 |
30 |
Freudenberg-NOK General Partnership | 178 |
30 |
Federal-Mogul Corporation | 362 |
26 |
Trelleborg Sealing Solutions Germany GmbH | 183 |
23 |
Siemens AG | 24990 |
22 |
Uchiyama Manufacturing Corp. | 119 |
17 |
JTEKT Corporation | 2423 |
15 |
Kalsi Engineering, Inc. | 50 |
14 |
Saint-Gobain Performance Plastics Corporation | 1028 |
14 |
AB SKF | 193 |
13 |
SKF USA Inc. | 49 |
13 |
GE Infrastructure Technology, LLC | 5873 |
13 |
Schaeffler Technologies GmbH & Co. KG | 846 |
12 |
Schaeffler KG | 960 |
12 |
Other owners | 934 |