- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F16K - Valvestapscocksactuating-floatsdevices for venting or aerating
- F16K 21/04 - Self-closing valves, i.e. closing automatically after operation
Patent holdings for IPC class F16K 21/04
Total number of patents in this class: 200
10-year publication summary
|
16
|
16
|
21
|
14
|
10
|
10
|
8
|
6
|
4
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sloan Valve Company | 278 |
9 |
| AptarGroup, Inc. | 264 |
5 |
| Silgan Dispensing Systems Corporation | 323 |
5 |
| Clover Co., Ltd. | 15 |
4 |
| SDB IP Holdings, LLC | 116 |
4 |
| Eaton Intelligent Power Limited | 6271 |
4 |
| Vitop Moulding S.r.l. | 47 |
3 |
| Ogon Contracting Pty Ltd. | 4 |
3 |
| Samsung Electronics Co., Ltd. | 158842 |
2 |
| LG Electronics Inc. | 75973 |
2 |
| Hyundai Motor Company | 24898 |
2 |
| Hamilton Sundstrand Corporation | 5013 |
2 |
| FCA US LLC | 3600 |
2 |
| AS America, Inc. | 1037 |
2 |
| Delta Faucet Company | 2864 |
2 |
| Ecolab USA Inc. | 5826 |
2 |
| Hamilton Bonaduz AG | 223 |
2 |
| Heartstitch, Inc. | 32 |
2 |
| Operations Technology Development, NFP | 23 |
2 |
| Mercury Plastics LLC | 77 |
2 |
| Other owners | 139 |