- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F04D - Non-positive-displacement pumps
- F04D 21/00 - Pumps specially adapted for elastic fluids involving supersonic speed of pumped fluids
Patent holdings for IPC class F04D 21/00
Total number of patents in this class: 56
10-year publication summary
|
2
|
2
|
0
|
2
|
7
|
4
|
3
|
3
|
10
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nuovo Pignone Tecnologie S.r.l. | 870 |
8 |
| Ramgen Power Systems, LLC | 9 |
6 |
| General Electric Company | 17793 |
5 |
| Carrier Corporation | 4426 |
5 |
| Next Gen Compression LLC | 5 |
5 |
| Dresser-Rand Company | 217 |
4 |
| Siemens AG | 24558 |
2 |
| Pratt & Whitney Canada Corp. | 4453 |
2 |
| Coolbrook Oy | 60 |
2 |
| Safran Aero Boosters SA | 183 |
2 |
| Siemens Energy Global GmbH & Co. KG | 2861 |
2 |
| Honda Motor Co., Ltd. | 24918 |
1 |
| Mitsubishi Heavy Industries, Ltd. | 8569 |
1 |
| Hitachi, Ltd. | 15259 |
1 |
| Rolls-Royce PLC | 3005 |
1 |
| Siemens Energy, Inc. | 1732 |
1 |
| JPMorgan Chase Bank, National Association | 8440 |
1 |
| Ansaldo Energia Switzerland AG | 284 |
1 |
| Dayco IP Holdings, LLC | 290 |
1 |
| Ferrari S.p.A. | 1418 |
1 |
| Other owners | 4 |