- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F01C - Rotary-piston or oscillating-piston machines or engines
- F01C 9/00 - Oscillating-piston machines or engines
Patent holdings for IPC class F01C 9/00
Total number of patents in this class: 92
10-year publication summary
20
|
11
|
12
|
9
|
10
|
9
|
4
|
1
|
2
|
1
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
FeTu Limited | 17 |
10 |
Woodward, Inc. | 602 |
7 |
Clearmotion, Inc. | 148 |
6 |
LiquidPiston, Inc. | 41 |
5 |
Fresenius Kabi Deutschland GmbH | 570 |
4 |
Nabtesco Corporation | 871 |
4 |
Peraves AG | 4 |
3 |
ixetic Bad Homburg GmbH | 50 |
2 |
Log Max AB | 32 |
2 |
University of Sussex | 96 |
2 |
WB Development Company, LLC | 17 |
2 |
RapSon GmbH | 3 |
2 |
Quest Engines, LLC | 31 |
2 |
Hybridise Limited | 2 |
2 |
General Electric Company | 18133 |
1 |
The Boeing Company | 19843 |
1 |
CapTech S.r.l. | 1 |
1 |
Donald E. Moriarty | 5 |
1 |
Easytork Automation Corporation | 10 |
1 |
ElringKlinger AG | 487 |
1 |
Other owners | 33 |