- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F16K - Valvestapscocksactuating-floatsdevices for venting or aerating
- F16K 3/20 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing facesPackings therefor with special arrangements for separating the sealing faces or for pressing them together by movement of the seats
Patent holdings for IPC class F16K 3/20
Total number of patents in this class: 141
10-year publication summary
|
12
|
13
|
14
|
25
|
10
|
13
|
6
|
10
|
11
|
11
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| SRI Energy Inc. | 48 |
12 |
| Oil States Energy Services, L.L.C. | 72 |
9 |
| Bestway Oilfield, Inc. | 47 |
7 |
| Tapcoenpro, LLC | 27 |
6 |
| VAT Holding AG | 247 |
6 |
| AWC Frac Valves Inc. | 10 |
5 |
| Deltavalve, LLC | 61 |
5 |
| Cameron International Corporation | 1365 |
4 |
| FMC Technologies, Inc. | 617 |
4 |
| Tiva Technologies, LLC | 15 |
4 |
| Shimadzu Corporation | 6363 |
3 |
| IHC Holland IE B.V. | 260 |
3 |
| Boxy Blind Valve Co., Ltd. | 3 |
3 |
| Vault Pressure Control LLC | 71 |
3 |
| Dalian Conservation Science & Technology Co., Ltd. | 7 |
3 |
| Schlumberger Canada Limited | 7613 |
2 |
| Beijing Aerospace Propulsion Institute | 18 |
2 |
| Isolation Equipment Services Inc. | 20 |
2 |
| ITT Manufacturing Enterprises LLC | 420 |
2 |
| KLX Energy Services LLC | 80 |
2 |
| Other owners | 54 |