- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F04C - Rotary-piston, or oscillating-piston, positive-displacement machines for liquidsrotary-piston, or oscillating-piston, positive-displacement pumps
- F04C 18/52 - Rotary-piston pumps with non-parallel axes of movement of co-operating members the axes being arranged at an angle of 90 degrees of intermeshing engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
Patent holdings for IPC class F04C 18/52
Total number of patents in this class: 133
10-year publication summary
|
11
|
14
|
6
|
13
|
6
|
6
|
8
|
6
|
9
|
3
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Daikin Industries, Ltd. | 10384 |
62 |
| Mitsubishi Electric Corporation | 47602 |
44 |
| Copeland Industrial LP | 44 |
11 |
| Vilter Manufacturing LLC | 20 |
5 |
| Green-y Energy AG | 8 |
3 |
| J & e Hall Ltd. | 18 |
2 |
| Lontra Limited | 24 |
2 |
| AAF-McQuay Inc. | 43 |
1 |
| Xi'an Jiaotong University | 707 |
1 |
| MITSUBISHI ELECTRIC HYDRONICS & IT COOLING SYSTEMS S.p.A. | 36 |
1 |
| Daikin Industries, Ltd. | 2 |
1 |
| Other owners | 0 |