- 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: 75
10-year publication summary
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5
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5
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7
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3
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6
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5
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3
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5
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4
|
2
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Gleason-Pfauter Maschinenfabrik GmbH | 92 |
9 |
| The Gleason Works | 201 |
8 |
| JTEKT Corporation | 2492 |
5 |
| Klingelnberg AG | 79 |
3 |
| Sandvik Intellectual Property AB | 1490 |
3 |
| Aisin AW Co., Ltd. | 2333 |
2 |
| citizen Machinery Co., Ltd. | 194 |
2 |
| Felsomat GmbH & Co. KG | 49 |
2 |
| Liebherr-Verzahntechnik GmbH | 69 |
2 |
| Mitsubishi Heavy Industries Machine Tool Co., Ltd. | 140 |
2 |
| Prawema Antriebstechnik GmbH | 35 |
2 |
| Sumitomo Electric Sintered Alloy, Ltd. | 227 |
2 |
| Yamazaki Mazak Corporation | 204 |
2 |
| TOYOTA JIDOSHA KABUSHIKI KAISHA (also trading as TOYOTA MOTOR CORPORATION) | 12847 |
2 |
| Adelbert Haas GmbH | 35 |
2 |
| Siemens AG | 24552 |
1 |
| GM Global Technology Operations LLC | 14926 |
1 |
| Caterpillar Inc. | 9521 |
1 |
| Mazda Motor Corporation | 3124 |
1 |
| Aisan Kogyo Kabushiki Kaisha | 737 |
1 |
| Other owners | 22 |