- All sections
- B - Performing operations; transporting
- B23F - Making gears or toothed racks
- B23F 21/14 - Profile cutters of disc type
Patent holdings for IPC class B23F 21/14
Total number of patents in this class: 27
10-year publication summary
|
4
|
4
|
2
|
3
|
2
|
1
|
0
|
1
|
0
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Tungaloy Corporation | 481 |
7 |
| Sandvik Intellectual Property AB | 1634 |
5 |
| Kennametal Inc. | 1380 |
4 |
| The Gleason Works | 202 |
3 |
| citizen Holdings Co., Ltd. | 332 |
1 |
| citizen Machinery Co., Ltd. | 176 |
1 |
| Hartmetall-Werkzeugfabrik Paul Horn GmbH | 154 |
1 |
| Klingelnberg AG | 74 |
1 |
| Profilator GmbH & Co. KG | 64 |
1 |
| Yamazaki Mazak Corporation | 171 |
1 |
| Peerd Milwaukee Brush Company, Inc. | 1 |
1 |
| NSH USA Corporation | 9 |
1 |
| Other owners | 0 |