- All sections
- B - Performing operationstransporting
- B23F - Making gears or toothed racks
- B23F 5/20 - Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made by milling
Patent holdings for IPC class B23F 5/20
Total number of patents in this class: 79
10-year publication summary
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5
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6
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3
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6
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5
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3
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4
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4
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6
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0
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Gleason-Pfauter Maschinenfabrik GmbH | 94 |
9 |
| The Gleason Works | 200 |
7 |
| JTEKT Corporation | 2540 |
6 |
| Klingelnberg AG | 83 |
3 |
| Sandvik Intellectual Property AB | 1439 |
3 |
| Aisin AW Co., Ltd. | 2293 |
2 |
| citizen Machinery Co., Ltd. | 197 |
2 |
| Felsomat GmbH & Co. KG | 49 |
2 |
| Liebherr-Verzahntechnik GmbH | 72 |
2 |
| Mitsubishi Heavy Industries Machine Tool Co., Ltd. | 140 |
2 |
| Prawema Antriebstechnik GmbH | 38 |
2 |
| Sumitomo Electric Sintered Alloy, Ltd. | 237 |
2 |
| Yamazaki Mazak Corporation | 233 |
2 |
| TOYOTA JIDOSHA KABUSHIKI KAISHA (also trading as TOYOTA MOTOR CORPORATION) | 12626 |
2 |
| Adelbert Haas GmbH | 40 |
2 |
| Siemens AG | 24294 |
1 |
| GM Global Technology Operations LLC | 15564 |
1 |
| Nissan Motor Co., Ltd. | 12676 |
1 |
| Caterpillar Inc. | 9983 |
1 |
| Mazda Motor Corporation | 3241 |
1 |
| Other owners | 26 |