- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F04B - Positive-displacement machines for liquidspumps
- F04B 27/08 - Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
Patent holdings for IPC class F04B 27/08
Total number of patents in this class: 439
10-year publication summary
|
34
|
30
|
19
|
17
|
19
|
9
|
4
|
9
|
4
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sanden Corporation | 965 |
61 |
| Doowon Technical College | 104 |
41 |
| Doowon Electronics Co., Ltd. | 85 |
40 |
| Hanon Systems | 1982 |
29 |
| Taiho Kogyo Co., Ltd. | 330 |
22 |
| Toyota Industries Corporation | 1140 |
15 |
| Kabushiki Kaisha Toyota Jidoshokki | 1781 |
12 |
| Valeo Japan Co., Ltd. | 306 |
10 |
| Sanden Holdings Corporation | 208 |
9 |
| Calsonic Kansei Corporation | 583 |
8 |
| Valeo Thermal Systems Japan Corporation | 26 |
8 |
| Caterpillar Inc. | 9640 |
7 |
| NTN Corporation | 4985 |
6 |
| Komatsu Ltd. | 4601 |
5 |
| Obrist Engineering GmbH | 18 |
5 |
| Robert Bosch GmbH | 42815 |
4 |
| MAHLE International GmbH | 2794 |
4 |
| LG Electronics Inc. | 73588 |
3 |
| Sanyo Machine Works, Ltd. | 25 |
3 |
| Duke Engines Limited | 6 |
3 |
| Other owners | 144 |