- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F16K - Valves; taps; cocks; actuating-floats; devices for venting or aerating
- F16K 41/12 - Spindle sealings with diaphragm, e.g. shaped as bellows or tube with approximately flat diaphragm
Patent holdings for IPC class F16K 41/12
Total number of patents in this class: 85
10-year publication summary
|
3
|
2
|
12
|
8
|
7
|
6
|
6
|
5
|
5
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| GEA Tuchenhagen GmbH | 144 |
6 |
| CKD Corporation | 443 |
4 |
| Mac Valves, Inc. | 83 |
4 |
| Tescom Corporation | 122 |
4 |
| Hamilton Sundstrand Corporation | 4719 |
3 |
| VAT Holding AG | 205 |
3 |
| Vistadeltek, LLC | 14 |
3 |
| Illinois Tool Works Inc. | 11369 |
2 |
| NEC Corporation | 34337 |
2 |
| Asahi Organic Chemicals Industry Co., Ltd. | 90 |
2 |
| The Automation Partnership (Cambridge) Limited | 73 |
2 |
| CAMOZZI S.p.A. SOCIETA' UNIPERSONALE | 10 |
2 |
| Corob S.p.A. | 39 |
2 |
| Entegris, Inc. | 1804 |
2 |
| Kennedy Valve Company | 49 |
2 |
| Compart Systems Pte. Ltd. | 50 |
2 |
| GIORDANO CONTROLS S.p.A. | 7 |
2 |
| META Platforms Technologies, LLC | 5339 |
2 |
| Merck Life Science AB | 12 |
2 |
| Robert Bosch GmbH | 41717 |
1 |
| Other owners | 33 |