- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F01D - Non-positive-displacement machines or engines, e.g. steam turbines
- F01D 21/18 - Trip gear involving hydraulic means
Patent holdings for IPC class F01D 21/18
Total number of patents in this class: 34
10-year publication summary
|
2
|
4
|
7
|
3
|
3
|
2
|
2
|
2
|
1
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| GE Infrastructure Technology, LLC | 5873 |
7 |
| Voith Patent GmbH | 2727 |
4 |
| Siemens Energy, Inc. | 1770 |
3 |
| Emerson Process Management Power & Water Solutions, Inc. | 126 |
3 |
| Mitsubishi Heavy Industries Compressor Corporation | 613 |
3 |
| Woodward, Inc. | 602 |
3 |
| Moog Japan Ltd. | 10 |
2 |
| Toshiba Corporation | 12017 |
1 |
| Elliott Company | 88 |
1 |
| General Electric Technology GmbH | 1657 |
1 |
| HYDAC System GmbH | 30 |
1 |
| Moog GmbH | 47 |
1 |
| Nuovo Pignone S.p.A. | 96 |
1 |
| Toshiba Energy Systems & Solutions Corp. | 954 |
1 |
| Mitsubishi Industries Compressor Corporation | 1 |
1 |
| Mesa Associates, Inc. | 4 |
1 |
| Other owners | 0 |