- All sections
- B - Performing operationstransporting
- 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: 55
10-year publication summary
|
6
|
4
|
8
|
6
|
7
|
4
|
2
|
5
|
4
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mitsubishi Heavy Industries Machine Tool Co., Ltd. | 140 |
13 |
| JTEKT Corporation | 2511 |
5 |
| Reishauer AG | 99 |
5 |
| Hartmetall-Werkzeugfabrik Paul Horn GmbH | 158 |
4 |
| Profilator GmbH & Co. KG | 63 |
4 |
| The Gleason Works | 201 |
3 |
| Eaton Intelligent Power Limited | 6012 |
3 |
| Gleason Cutting Tools Corporation | 10 |
2 |
| Gleason-Pfauter Maschinenfabrik GmbH | 92 |
2 |
| Klingelnberg AG | 81 |
2 |
| Mitsubishi Materials Corporation | 2453 |
2 |
| Prawema Antriebstechnik GmbH | 35 |
2 |
| Rheinisch-Westfälische Technische Hochschule (RWTH) Aachen | 308 |
2 |
| AB Sandvik Coromant | 242 |
1 |
| National Central University | 244 |
1 |
| Ogasawara Precision Laboratory Co., Ltd. | 4 |
1 |
| Sandvik Intellectual Property AB | 1476 |
1 |
| Flender GmbH | 372 |
1 |
| Nidec Machine Tool Corporation | 26 |
1 |
| Other owners | 0 |