- 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 2/22 - Rotary-piston machines or pumps of internal-axis type with equidirectional movement of co-operating members at the points of engagement, or with one of the co-operating members being stationary, the inner member having more teeth or tooth-equivalents than the outer member
Patent holdings for IPC class F04C 2/22
Total number of patents in this class: 36
10-year publication summary
|
4
|
6
|
2
|
8
|
6
|
5
|
11
|
1
|
1
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rotoliptic Technologies Incorporated | 19 |
6 |
| Korea Atomic Energy Research Institute | 418 |
5 |
| Stackpole International Engineered Products, Ltd. | 46 |
2 |
| Baker Hughes, a GE Company, LLC | 2171 |
2 |
| Vitesco Technologies GmbH | 2372 |
2 |
| Quantex ARC Limited | 15 |
2 |
| Robert Bosch GmbH | 40953 |
1 |
| BorgWarner Inc. | 2604 |
1 |
| CBF s.r.l. | 6 |
1 |
| GE Oil & Gas Compression Systems, LLC | 16 |
1 |
| GREE Electric Appliances, Inc. of Zhuhai | 3007 |
1 |
| Haselmeier AG | 37 |
1 |
| Rheinisch-Westfaelische Technische Hochschule Aachen | 14 |
1 |
| Tianjin University | 695 |
1 |
| Epitrochoidal Compressors Ltd. | 2 |
1 |
| Rotoliptic Technologies Incorporated | 1 |
1 |
| Positec Power Tools (Suzhou) Co., Ltd. (non-small entity) | 208 |
1 |
| Steammotor Finland Oy AB Ltd | 3 |
1 |
| Entire R&D Ply Ltd | 1 |
1 |
| Aisin Corporation | 1164 |
1 |
| Other owners | 3 |