- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F03C - Positive-displacement engines driven by liquids
- F03C 1/28 - Pistons specially adapted therefor
Patent holdings for IPC class F03C 1/28
Total number of patents in this class: 33
10-year publication summary
|
7
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6
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4
|
3
|
2
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3
|
1
|
1
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2
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Robert Bosch GmbH | 42450 |
9 |
| Komatsu Ltd. | 4505 |
3 |
| HYDAC Drive Center GmbH | 16 |
3 |
| Schaeffler Technologies AG & Co. KG | 9747 |
2 |
| Poclain Hydraulics Industrie | 239 |
2 |
| Mitsubishi Heavy Industries, Ltd. | 8647 |
1 |
| Kawasaki Heavy Industries, Limited | 1616 |
1 |
| Aoe Accumulated Ocean Energy Inc. | 10 |
1 |
| Clark Equipment Company | 306 |
1 |
| Daido Metal Company Ltd. | 231 |
1 |
| Liebherr Machines Bulle SA | 48 |
1 |
| Moog GmbH | 48 |
1 |
| Tonand Brakes Inc. | 4 |
1 |
| Domin Fluid Power Limited | 16 |
1 |
| Black Bruin OY (also doing business as Black Bruin Inc.) | 3 |
1 |
| Danfoss A/S | 1348 |
1 |
| Bieri Hydraulik AG | 8 |
1 |
| Intra-italia Hydraulics (Foshan Shunde) Co., Ltd | 1 |
1 |
| Qingdao Create Holdings Co., Ltd. | 6 |
1 |
| Other owners | 0 |