- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F04B - Positive-displacement machines for liquids; pumps
- F04B 1/2021 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block - Details or component parts characterised by the contact area between cylinder barrel and valve plate
Patent holdings for IPC class F04B 1/2021
Total number of patents in this class: 22
10-year publication summary
|
2
|
1
|
0
|
1
|
3
|
3
|
5
|
2
|
4
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Robert Bosch GmbH | 40953 |
4 |
| Danfoss A/S | 1259 |
4 |
| Komatsu Ltd. | 4265 |
3 |
| Hydro LEDUC | 9 |
2 |
| Honeywell International Inc. | 13799 |
1 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
1 |
| Hyundai Motor Company | 19021 |
1 |
| Kia Motors Corporation | 7946 |
1 |
| Danfoss Power Solutions Inc. | 116 |
1 |
| Hydro-Gear Limited Partnership | 355 |
1 |
| Parker Intangibles LLC | 1237 |
1 |
| Rabhi, Vianney | 34 |
1 |
| Eaton Intelligent Power Limited | 6113 |
1 |
| Other owners | 0 |