- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F17D - Pipe-line systemspipe-lines
- F17D 1/20 - Arrangements or systems of devices for influencing or altering dynamic characteristics of the systems, e.g. for damping pulsations caused by opening or closing of valves
Patent holdings for IPC class F17D 1/20
Total number of patents in this class: 127
10-year publication summary
|
13
|
5
|
15
|
4
|
9
|
11
|
7
|
6
|
2
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Saudi Arabian Oil Company | 14248 |
12 |
| Aramco Services Company | 4196 |
4 |
| Canada Pipeline Accessories, Co. Ltd. | 88 |
4 |
| Equinor Energy AS | 497 |
3 |
| Yunnan Dahongshan Pipeline Ltd. | 9 |
3 |
| Schlumberger Canada Limited | 7601 |
2 |
| Halliburton Energy Services, Inc. | 21320 |
2 |
| Caterpillar Inc. | 10281 |
2 |
| Air Products and Chemicals, Inc. | 1474 |
2 |
| President and Fellows of Harvard College | 6092 |
2 |
| Flowtech Co., Ltd. | 18 |
2 |
| Nordson Corporation | 1202 |
2 |
| Petroleo Brasileiro S.A. - Petrobras | 968 |
2 |
| Scale Protection AS | 9 |
2 |
| Solray Holdings Limited | 4 |
2 |
| TPE Midstream LLC | 62 |
2 |
| The University of British Columbia | 1546 |
2 |
| Chengdu Qinchuan IoT Technology Co., Ltd. | 548 |
2 |
| Lleb Holdings, LLC | 9 |
2 |
| Sensia LLC | 130 |
2 |
| Other owners | 71 |