- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F16K - Valvestapscocksactuating-floatsdevices for venting or aerating
- F16K 31/68 - Operating meansReleasing devices responsive to temperature variation actuated by fluid pressure or volumetric variation in a confined chamber
Patent holdings for IPC class F16K 31/68
Total number of patents in this class: 142
10-year publication summary
|
10
|
14
|
8
|
8
|
6
|
21
|
3
|
9
|
5
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Thermostat Co., Ltd. | 180 |
45 |
| Fujikoki Corporation | 413 |
18 |
| Denso Corporation | 25495 |
16 |
| Dana Canada Corporation | 268 |
8 |
| Scania CV AB | 2403 |
7 |
| Fuji Bellows Co., Ltd. | 12 |
5 |
| TLV Co., Ltd. | 339 |
3 |
| Baker Hughes Incorporated | 4947 |
2 |
| Acorn Engineering Company | 184 |
2 |
| Corea Electronics Corporation | 4 |
2 |
| TOYOTA JIDOSHA KABUSHIKI KAISHA (also trading as TOYOTA MOTOR CORPORATION) | 12395 |
2 |
| Hitachi Automotive Systems, Ltd. | 3954 |
1 |
| Mitsubishi Electric Corporation | 47943 |
1 |
| Nissan Motor Co., Ltd. | 12933 |
1 |
| Konica Minolta Holdings, Inc. | 793 |
1 |
| Artis S.r.l. | 6 |
1 |
| Caleffi S.p.A. | 109 |
1 |
| Calsonic Kansei Corporation | 531 |
1 |
| Contemporary Amperex Technology Co., Limited | 9818 |
1 |
| Futaba Industrial Co., Ltd. | 363 |
1 |
| Other owners | 23 |