- All sections
- B - Performing operationstransporting
- B23F - Making gears or toothed racks
- B23F 21/28 - Shaving cutters
Patent holdings for IPC class B23F 21/28
Total number of patents in this class: 6
10-year publication summary
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0
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1
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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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1
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0
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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
|
|---|---|---|
| JTEKT Corporation | 2491 |
1 |
| AB Sandvik Coromant | 239 |
1 |
| Bourn & Koch, Inc. | 2 |
1 |
| Gleason-Pfauter Maschinenfabrik GmbH | 92 |
1 |
| Prawema Antriebstechnik GmbH | 35 |
1 |
| Kreuz Co., Ltd. | 3 |
1 |
| Other owners | 0 |