- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F02B - Internal-combustion piston enginescombustion engines in general
- F02B 71/04 - Adaptations of such engines for special useCombinations of such engines with apparatus driven thereby
Patent holdings for IPC class F02B 71/04
Total number of patents in this class: 139
10-year publication summary
|
10
|
15
|
5
|
18
|
14
|
10
|
15
|
8
|
9
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mainspring Energy, Inc. | 106 |
43 |
| Aquarius Engines (A.M.) Ltd. | 37 |
11 |
| Illinois Tool Works Inc. | 11399 |
8 |
| Libertine FPE Ltd. | 30 |
8 |
| Deutsches Zentrum für Luft- und Raumfahrt e.V. | 760 |
6 |
| Altor Limited LC | 8 |
5 |
| Sturman Digital Systems, LLC | 41 |
5 |
| General Electric Company | 17789 |
4 |
| EtaGen, Inc. | 27 |
2 |
| Regents of the University of Minnesota | 2680 |
2 |
| UMC Universal Motor Corporation GmbH | 7 |
2 |
| Amnext Technology, Inc. | 4 |
2 |
| Aquarius Engines Central Europe Sp. z o.o. | 3 |
2 |
| Siemens AG | 24565 |
1 |
| GM Global Technology Operations LLC | 14260 |
1 |
| Boston Dynamics, Inc. | 495 |
1 |
| Raytheon Sarcos, LLC | 25 |
1 |
| Hilti Aktiengesellschaft | 3383 |
1 |
| Achates Power, Inc. | 208 |
1 |
| Aerodyne Research, Inc. | 25 |
1 |
| Other owners | 32 |