- 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: 83
10-year publication summary
2
|
3
|
2
|
12
|
8
|
7
|
6
|
6
|
5
|
2
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
GEA Tuchenhagen GmbH | 133 |
6 |
CKD Corporation | 424 |
4 |
Mac Valves, Inc. | 82 |
4 |
Tescom Corporation | 124 |
4 |
Hamilton Sundstrand Corporation | 4525 |
3 |
VAT Holding AG | 197 |
3 |
Vistadeltek, LLC | 14 |
3 |
Illinois Tool Works Inc. | 11152 |
2 |
NEC Corporation | 32703 |
2 |
Asahi Organic Chemicals Industry Co., Ltd. | 97 |
2 |
The Automation Partnership (Cambridge) Limited | 70 |
2 |
CAMOZZI S.p.A. SOCIETA' UNIPERSONALE | 10 |
2 |
Corob S.p.A. | 38 |
2 |
Entegris, Inc. | 1736 |
2 |
Kennedy Valve Company | 49 |
2 |
Compart Systems Pte. Ltd. | 48 |
2 |
GIORDANO CONTROLS S.p.A. | 7 |
2 |
Merck Life Science AB | 12 |
2 |
Robert Bosch GmbH | 40953 |
1 |
Denso Corporation | 23338 |
1 |
Other owners | 32 |