- All sections
- B - Performing operationstransporting
- B23F - Making gears or toothed racks
- B23F 21/12 - Milling tools
Patent holdings for IPC class B23F 21/12
Total number of patents in this class: 75
10-year publication summary
|
7
|
6
|
5
|
7
|
5
|
4
|
6
|
5
|
1
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| The Gleason Works | 200 |
11 |
| Profilator GmbH & Co. KG | 63 |
7 |
| American Axle & Manufacturing, Inc. | 649 |
5 |
| Gleason-Pfauter Maschinenfabrik GmbH | 94 |
5 |
| Hartmetall-Werkzeugfabrik Paul Horn GmbH | 155 |
5 |
| JTEKT Corporation | 2541 |
4 |
| Klingelnberg AG | 83 |
4 |
| Prawema Antriebstechnik GmbH | 38 |
3 |
| Aisin Seiki Kabushiki Kaisha | 2191 |
2 |
| OSG Corporation | 354 |
2 |
| Sandvik Intellectual Property AB | 1437 |
2 |
| Tungaloy Corporation | 528 |
2 |
| Adelbert Haas GmbH | 40 |
2 |
| Ford Motor Company | 2695 |
1 |
| Kennametal Inc. | 1363 |
1 |
| citizen Machinery Co., Ltd. | 198 |
1 |
| citizen Watch Co., Ltd. | 1080 |
1 |
| Fairfield Manufacturing Company, Inc. | 51 |
1 |
| Felsomat GmbH & Co. KG | 49 |
1 |
| Gebr. Heller Maschinenfabrik GmbH | 65 |
1 |
| Other owners | 14 |