- All sections
- B - Performing operations; transporting
- B23F - Making gears or toothed racks
- B23F 21/10 - Gear-shaper cutters having a shape similar to a spur wheel or part thereof
Patent holdings for IPC class B23F 21/10
Total number of patents in this class: 50
10-year publication summary
|
7
|
6
|
4
|
8
|
7
|
6
|
4
|
2
|
4
|
2
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mitsubishi Heavy Industries Machine Tool Co., Ltd. | 147 |
13 |
| JTEKT Corporation | 2423 |
5 |
| Profilator GmbH & Co. KG | 64 |
4 |
| The Gleason Works | 202 |
3 |
| Hartmetall-Werkzeugfabrik Paul Horn GmbH | 154 |
3 |
| Eaton Intelligent Power Limited | 6113 |
3 |
| Gleason Cutting Tools Corporation | 10 |
2 |
| Klingelnberg AG | 74 |
2 |
| Mitsubishi Materials Corporation | 2378 |
2 |
| Prawema Antriebstechnik GmbH | 34 |
2 |
| Reishauer AG | 79 |
2 |
| Rheinisch-Westfälische Technische Hochschule (RWTH) Aachen | 270 |
2 |
| Aisin Seiki Kabushiki Kaisha | 2427 |
1 |
| AB Sandvik Coromant | 175 |
1 |
| Gleason-Pfauter Maschinenfabrik GmbH | 89 |
1 |
| National Central University | 224 |
1 |
| Ogasawara Precision Laboratory Co., Ltd. | 4 |
1 |
| Sandvik Intellectual Property AB | 1634 |
1 |
| Flender GmbH | 338 |
1 |
| Other owners | 0 |