- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F16K - Valvestapscocksactuating-floatsdevices for venting or aerating
- F16K 21/16 - Self-closing valves, i.e. closing automatically after operation closing after a predetermined quantity of fluid has been delivered
Patent holdings for IPC class F16K 21/16
Total number of patents in this class: 31
10-year publication summary
|
2
|
5
|
4
|
3
|
9
|
4
|
5
|
4
|
1
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Merck Patent GmbH | 5814 |
2 |
| Drexel University | 996 |
2 |
| Kohler Co. | 4066 |
1 |
| Rolls-Royce PLC | 3125 |
1 |
| Air Cruisers Company, LLC | 57 |
1 |
| Ark Innovations, Inc. | 1 |
1 |
| Aurora Flight Sciences Corporation | 241 |
1 |
| Buerkert Werke GmbH & Co. KG | 89 |
1 |
| Eltek S.p.A. | 199 |
1 |
| Fluidmaster, Inc. | 142 |
1 |
| Highplus International Co., Ltd. | 4 |
1 |
| People and Products-Plumbing LLC | 3 |
1 |
| Prodew, Inc. | 16 |
1 |
| Robertshaw Controls Company | 105 |
1 |
| Sandvik Mining and Construction Oy | 836 |
1 |
| SEI Manufacturing, Inc. | 15 |
1 |
| Shanghai Kohler Electronics, Ltd. | 149 |
1 |
| Sur-flo Meters & Controls Ltd. | 4 |
1 |
| UBS AG, Stamford Branch | 26 |
1 |
| Vektek, Inc. | 4 |
1 |
| Other owners | 9 |