- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F16K - Valvestapscocksactuating-floatsdevices for venting or aerating
- F16K 1/44 - Details of seats or valve members of double-seat valves
Patent holdings for IPC class F16K 1/44
Total number of patents in this class: 528
10-year publication summary
|
34
|
42
|
79
|
47
|
42
|
39
|
30
|
19
|
18
|
7
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| GEA Tuchenhagen GmbH | 146 |
46 |
| Kohler Mira Limited | 308 |
33 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 4071 |
22 |
| Fisher Controls International LLC | 1479 |
20 |
| Pierburg GmbH | 478 |
11 |
| Siemens AG | 24132 |
10 |
| Robert Bosch GmbH | 43788 |
10 |
| Alfa Laval Corporate AB | 1333 |
10 |
| Mitsubishi Heavy Industries, Ltd. | 9041 |
9 |
| Voyetra Turtle Beach, Inc. | 523 |
8 |
| Suedmo Holding GmbH | 12 |
8 |
| Eagle Industry Co., Ltd. | 1171 |
6 |
| Fujikoki Corporation | 404 |
6 |
| Mitsubishi Hitachi Power Systems, Ltd. | 991 |
6 |
| Emerson Process Management Regulator Technologies, Inc. | 389 |
5 |
| Krones AG | 2264 |
5 |
| Mitsubishi Power, Ltd. | 1823 |
5 |
| Continental Automotive GmbH | 4588 |
4 |
| Hamilton Sundstrand Corporation | 5019 |
4 |
| ChargePoint Technology Limited | 46 |
4 |
| Other owners | 296 |