- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F04C - Rotary-piston, or oscillating-piston, positive-displacement machines for liquids; rotary-piston, or oscillating-piston, positive-displacement pumps
- F04C 18/18 - Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with similar tooth forms
Patent holdings for IPC class F04C 18/18
Total number of patents in this class: 58
10-year publication summary
|
10
|
6
|
6
|
7
|
4
|
2
|
2
|
1
|
4
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Eaton Intelligent Power Limited | 6113 |
5 |
| Orion Machinery Co., Ltd. | 45 |
4 |
| ULVAC, Inc. | 1448 |
4 |
| Eaton Corporation | 1839 |
3 |
| Anest Iwata Corporation | 168 |
3 |
| Kashiyama Industries, Ltd. | 15 |
3 |
| Leybold GmbH | 293 |
3 |
| Caterpillar Inc. | 8877 |
2 |
| Ebara Corporation | 1951 |
2 |
| Danfoss Power Solutions GmbH & Co. OHG | 70 |
2 |
| Hitachi, Ltd. | 16452 |
1 |
| Hamilton Sundstrand Corporation | 4525 |
1 |
| Carrier Corporation | 4759 |
1 |
| Concentric Birmingham Limited | 6 |
1 |
| Danfoss Power Solutions S.r.l. | 5 |
1 |
| GREE Electric Appliances, Inc. of Zhuhai | 3007 |
1 |
| Japan Chemical Engineering & Machinery Co., Ltd. | 3 |
1 |
| Jurop S.p.A. | 15 |
1 |
| LIM, Nag-Bok | 1 |
1 |
| Lot Vacuum Co., Ltd. | 19 |
1 |
| Other owners | 17 |