- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F01C - Rotary-piston or oscillating-piston machines or engines
- F01C 19/08 - Axially-movable sealings for working fluids
Patent holdings for IPC class F01C 19/08
Total number of patents in this class: 77
10-year publication summary
|
10
|
4
|
6
|
7
|
6
|
3
|
2
|
5
|
4
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Pratt & Whitney Canada Corp. | 4969 |
9 |
| LiquidPiston, Inc. | 50 |
7 |
| Mitsubishi Heavy Industries Thermal Systems, Ltd. | 925 |
4 |
| Eagle Industry Co., Ltd. | 1150 |
3 |
| WB Development Company, LLC | 20 |
3 |
| Hitachi Astemo, Ltd. | 6380 |
3 |
| Daikin Industries, Ltd. | 10169 |
2 |
| Agilent Technologies, Inc. | 2644 |
2 |
| Danfoss Commercial Compressors | 90 |
2 |
| Korona Group Ltd. | 7 |
2 |
| Hanon Systems EFP Deutschland GmbH | 91 |
2 |
| Copeland LP | 693 |
2 |
| Samsung Electronics Co., Ltd. | 149582 |
1 |
| Robert Bosch GmbH | 43116 |
1 |
| GM Global Technology Operations LLC | 15443 |
1 |
| Toyota Industries Corporation | 1160 |
1 |
| Anest Iwata Corporation | 155 |
1 |
| AVL List GmbH | 1319 |
1 |
| Brands & Products IPR Holding GmbH & Co. KG | 3 |
1 |
| CBF s.r.l. | 6 |
1 |
| Other owners | 28 |