- All sections
- B - Performing operationstransporting
- B23F - Making gears or toothed racks
- B23F 21/22 - Face-mills for longitudinally-curved gear teeth
Patent holdings for IPC class B23F 21/22
Total number of patents in this class: 38
10-year publication summary
|
3
|
4
|
5
|
3
|
1
|
0
|
0
|
0
|
1
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| The Gleason Works | 201 |
23 |
| Klingelnberg AG | 75 |
5 |
| Cole Carbide Industries, Inc. | 3 |
2 |
| Klingelnberg GmbH | 53 |
2 |
| Ford Motor Company | 2729 |
1 |
| Aisin Seiki Kabushiki Kaisha | 2283 |
1 |
| Kennametal Inc. | 1392 |
1 |
| Dana Automotive Systems Group, LLC | 416 |
1 |
| Gleason Cutting Tools Corporation | 10 |
1 |
| Sandvik Intellectual Property AB | 1540 |
1 |
| Other owners | 0 |