- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F16K - Valvestapscocksactuating-floatsdevices for venting or aerating
- F16K 21/08 - Self-closing valves, i.e. closing automatically after operation in which the closing movement, either retarded or not, starts immediately after opening with ball-shaped closing members
Patent holdings for IPC class F16K 21/08
Total number of patents in this class: 17
10-year publication summary
|
1
|
0
|
3
|
1
|
0
|
0
|
0
|
1
|
2
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Precision Planting LLC | 1156 |
2 |
| Sumitomo Chemical Company, Limited | 9039 |
1 |
| 101247262 Saskatchewan Ltd. | 1 |
1 |
| Cameron International Corporation | 1357 |
1 |
| CareFusion 303, Inc. | 2281 |
1 |
| Nibco Inc. | 234 |
1 |
| Oil States Industries, Inc. | 65 |
1 |
| Pride Technologies International Pty Ltd | 2 |
1 |
| Trydel Research Pty. Ltd. | 22 |
1 |
| Valeo Systemes Thermiques | 2792 |
1 |
| Vitop Moulding S.r.l. | 44 |
1 |
| AdelWiggins Group | 5 |
1 |
| Smartech Topical, Inc. | 13 |
1 |
| PURCELL, Diana | 1 |
1 |
| Dartmouth Ocean Technologies Inc. | 7 |
1 |
| Hydraulic Technologies USA LLC | 26 |
1 |
| Other owners | 0 |