- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F01K - Steam engine plants; steam accumulators; engine plants not otherwise provided for; engines using special working fluids or cycles
- F01K 25/04 - Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for the fluid being in different phases, e.g. foamed
Patent holdings for IPC class F01K 25/04
Total number of patents in this class: 71
10-year publication summary
|
15
|
8
|
6
|
5
|
9
|
4
|
4
|
7
|
2
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Bill & Melinda Gates Foundation, William H. Gates III and Melinda F. Gates, both US citizens | 31 |
6 |
| Heat Source Energy Corp. | 7 |
6 |
| Atlas Copco Airpower, naamloze vennootschap | 984 |
5 |
| Hevatech | 12 |
5 |
| Isuzu Motors Limited | 2240 |
4 |
| Siemens AG | 24565 |
2 |
| Aoe Accumulated Ocean Energy Inc. | 11 |
2 |
| ElectraTherm, Inc. | 6 |
2 |
| Highview Enterprises Limited | 48 |
2 |
| SustainX, Inc. | 9 |
2 |
| Astertech, S. L. | 3 |
2 |
| The Regents of the University of California | 19517 |
1 |
| International Business Machines Corporation | 60129 |
1 |
| Eaton Corporation | 1831 |
1 |
| Centre National de La Recherche Scientifique | 10102 |
1 |
| Rolls-Royce PLC | 2989 |
1 |
| Echogen Power Systems, LLC | 63 |
1 |
| Fluor Technologies Corporation | 383 |
1 |
| PACCAR Inc | 1293 |
1 |
| Pera Innovation Limited | 4 |
1 |
| Other owners | 24 |