- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F16J - Pistons; cylinders; pressure vessels in general; sealings
- F16J 15/34 - Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
Patent holdings for IPC class F16J 15/34
Total number of patents in this class: 1955
10-year publication summary
146
|
181
|
139
|
178
|
153
|
200
|
151
|
123
|
112
|
25
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Eagle Industry Co., Ltd. | 1062 |
381 |
EagleBurgmann Germany GmbH & Co. KG | 314 |
126 |
Rtx Corporation | 8674 |
103 |
Caterpillar Inc. | 8877 |
54 |
John Crane UK Limited | 73 |
40 |
EagleBurgmann Japan Co., Ltd. | 52 |
39 |
AES Engineering Ltd. | 95 |
35 |
John Crane Inc. | 93 |
34 |
NOK Corporation | 2108 |
31 |
Flowserve Management Company | 339 |
30 |
A.W. Chesterton Company | 80 |
28 |
Nippon Pillar Packing Co., Ltd. | 269 |
25 |
Aktiebolaget SKF | 2700 |
23 |
Siemens AG | 24990 |
21 |
Eaton Intelligent Power Limited | 6113 |
18 |
Carl Freudenberg KG | 1346 |
17 |
Federal-Mogul Burscheid GmbH | 284 |
16 |
Stein Seal Company | 69 |
16 |
Pratt & Whitney Canada Corp. | 4215 |
15 |
Ebara Corporation | 1951 |
14 |
Other owners | 889 |