- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F16J - Pistons; cylinders; pressure vessels in general; sealings
- F16J 15/20 - Packing materials therefor
Patent holdings for IPC class F16J 15/20
Total number of patents in this class: 119
10-year publication summary
|
9
|
6
|
11
|
6
|
12
|
4
|
6
|
12
|
5
|
2
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NOK Corporation | 2108 |
8 |
| Garlock Sealing Technologies LLC | 149 |
5 |
| Daikin Industries, Ltd. | 9495 |
4 |
| NTN Corporation | 5008 |
4 |
| Nippon Pillar Packing Co., Ltd. | 269 |
4 |
| Baker Hughes Incorporated | 5689 |
3 |
| Caterpillar Inc. | 8877 |
3 |
| Kabushiki Kaisha Riken | 265 |
3 |
| Saint-Gobain Performance Plastics Corporation | 1028 |
3 |
| TDW Delaware, Inc. | 163 |
3 |
| Halliburton Energy Services, Inc. | 20165 |
2 |
| Honda Motor Co., Ltd. | 24537 |
2 |
| Robert Bosch GmbH | 40953 |
2 |
| Sumitomo Rubber Industries, Ltd. | 4421 |
2 |
| A.W. Chesterton Company | 80 |
2 |
| Baoyi Group Co., Ltd. | 6 |
2 |
| Greene, Tweed Technologies, Inc. | 127 |
2 |
| Mitsubishi Cable Industries, Ltd. | 175 |
2 |
| Nitta Corporation | 358 |
2 |
| Parker Intangibles LLC | 1237 |
2 |
| Other owners | 59 |