- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F04B - Positive-displacement machines for liquidspumps
- F04B 25/04 - Multi-stage pumps specially adapted for elastic fluids having cylinders coaxial with, or parallel or inclined to, main shaft axis
Patent holdings for IPC class F04B 25/04
Total number of patents in this class: 86
10-year publication summary
|
2
|
11
|
8
|
1
|
4
|
1
|
2
|
2
|
4
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Doowon Technical College | 103 |
20 |
| Doowon Electronics Co., Ltd. | 82 |
20 |
| Hanon Systems | 2106 |
5 |
| LG Electronics Inc. | 75694 |
2 |
| Carrier Corporation | 3955 |
2 |
| Bitzer Kuehlmaschinenbau GmbH | 158 |
2 |
| Kobe Steel, Ltd. | 899 |
2 |
| CW Holdings Ltd. | 6 |
2 |
| Caterpillar Inc. | 10267 |
1 |
| Hyundai Motor Company | 24653 |
1 |
| Kia Motors Corporation | 7718 |
1 |
| Beijing Const Instrument Technology Inc. | 13 |
1 |
| Beijing Const Instruments Technology Inc. | 16 |
1 |
| Board of Regents of the University of Nebraska | 790 |
1 |
| Crosman Corporation | 191 |
1 |
| Erae Automotive Systems Co., Ltd. | 15 |
1 |
| Gasfill Limited | 1 |
1 |
| Go Natural Cng, LLC | 1 |
1 |
| INFICON GmbH | 214 |
1 |
| Intellectual Property Holdings, LLC | 33 |
1 |
| Other owners | 19 |