- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F04D - Non-positive-displacement pumps
- F04D 19/00 - Axial-flow pumps specially adapted for elastic fluids
Patent holdings for IPC class F04D 19/00
Total number of patents in this class: 1306
10-year publication summary
|
221
|
202
|
165
|
173
|
145
|
149
|
124
|
135
|
145
|
55
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nidec Corporation | 2579 |
54 |
| Delta Electronics, Inc. | 2401 |
44 |
| ebm-papst Mulfingen GmbH & Co. KG | 608 |
42 |
| Rtx Corporation | 8674 |
40 |
| General Electric Company | 18133 |
30 |
| Hamilton Sundstrand Corporation | 4525 |
29 |
| Asia Vital Components Co., Ltd. | 413 |
28 |
| SANYO Denki Co., Ltd. | 221 |
22 |
| Safran Aircraft Engines | 5739 |
21 |
| Mitsubishi Electric Corporation | 43934 |
18 |
| Delta T, LLC | 272 |
15 |
| LG Electronics Inc. | 69257 |
14 |
| Airius IP Holdings, LLC | 62 |
14 |
| Hunter Fan Company | 699 |
13 |
| Ziehl-abegg SE | 184 |
13 |
| Lighting Defense Group, LLC | 48 |
13 |
| Carrier Corporation | 4759 |
12 |
| EBM-Papst St. Georgen GmbH & Co. KG | 286 |
12 |
| Prime Datum, Inc. | 22 |
11 |
| Robert Bosch GmbH | 40953 |
10 |
| Other owners | 851 |