- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F16K - Valves; taps; cocks; actuating-floats; devices for venting or aerating
- F16K 1/44 - Cutting-off parts - 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: 523
10-year publication summary
|
45
|
34
|
42
|
79
|
47
|
42
|
39
|
29
|
18
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| GEA Tuchenhagen GmbH | 145 |
44 |
| Kohler Mira Limited | 286 |
33 |
| Fisher Controls International LLC | 1515 |
20 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 3591 |
15 |
| Robert Bosch GmbH | 41765 |
11 |
| Pierburg GmbH | 451 |
11 |
| Siemens AG | 24573 |
10 |
| Suedmo Holding GmbH | 14 |
10 |
| Alfa Laval Corporate AB | 1305 |
9 |
| Mitsubishi Heavy Industries, Ltd. | 8531 |
8 |
| L'Air Liquide, Societe Anonyme pour L'etude et L'exploitation des Proced ES Georges Claude | 304 |
7 |
| Voyetra Turtle Beach, Inc. | 481 |
7 |
| Eagle Industry Co., Ltd. | 1101 |
6 |
| Fujikoki Corporation | 363 |
6 |
| Mitsubishi Hitachi Power Systems, Ltd. | 995 |
6 |
| Nippon Thermostat Co., Ltd. | 162 |
6 |
| Emerson Process Management Regulator Technologies, Inc. | 378 |
5 |
| Krones AG | 2113 |
5 |
| PENTAIR Südmo GmbH | 13 |
5 |
| Mitsubishi Power, Ltd. | 1735 |
5 |
| Other owners | 294 |