- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F02B - Internal-combustion piston enginescombustion engines in general
- F02B 33/12 - Engines with reciprocating-piston pumpsEngines with crankcase pumps with reciprocating-piston pumps other than simple crankcase pumps with the pumping cylinder situated between working cylinder and crankcase, or with the pumping cylinder surrounding working cylinder the rear face of working piston acting as pumping member and co-operating with a pumping chamber isolated from crankcase, the connecting-rod passing through the chamber and co-operating with movable isolating member
Patent holdings for IPC class F02B 33/12
Total number of patents in this class: 17
10-year publication summary
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1
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1
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11
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0
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0
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0
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0
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1
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1
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0
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Quest Engines, LLC | 31 |
4 |
| Cooper Machinery Services LLC | 58 |
2 |
| Hitachi Koki Co., Ltd. | 418 |
1 |
| Husqvarna AB | 2903 |
1 |
| Mitsubishi Heavy Industries Meiki Engines Co., Ltd. | 32 |
1 |
| Ryger Engine United B.V. | 2 |
1 |
| FERIOZZI, Franco | 1 |
1 |
| Lwj Co., Ltd. | 4 |
1 |
| MONTALBANO CARACCI, Vincenzo | 2 |
1 |
| NOORDBRUIS, Lambertus, Jan | 1 |
1 |
| Sevilla Beheer BV | 1 |
1 |
| Van Rooyen, James Basil | 2 |
1 |
| Van Rooyen, John Renier | 2 |
1 |
| Other owners | 0 |