- All sections
- B - Performing operationstransporting
- B23F - Making gears or toothed racks
- B23F 21/16 - Hobs
Patent holdings for IPC class B23F 21/16
Total number of patents in this class: 59
10-year publication summary
|
4
|
8
|
9
|
8
|
5
|
1
|
5
|
2
|
0
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Gleason-Pfauter Maschinenfabrik GmbH | 92 |
4 |
| The Gleason Works | 202 |
4 |
| Profilator GmbH & Co. KG | 63 |
4 |
| Kennametal Inc. | 1391 |
3 |
| Mitsubishi Materials Corporation | 2469 |
3 |
| OSG Corporation | 350 |
3 |
| Sandvik Intellectual Property AB | 1476 |
3 |
| Sumitomo Electric Industries, Ltd. | 15647 |
2 |
| JTEKT Corporation | 2515 |
2 |
| Danfoss Power Solutions S.r.l. | 5 |
2 |
| Diametal AG, | 18 |
2 |
| Fuji Manufacturing Co., Ltd. | 53 |
2 |
| Liebherr-Verzahntechnik GmbH | 69 |
2 |
| Mitsubishi Heavy Industries Machine Tool Co., Ltd. | 140 |
2 |
| SECO Tools AB | 456 |
2 |
| Hyperion Materials & Technologies (Sweden) AB | 67 |
2 |
| Zhejiang Shangyou Cutting Tool Co., Ltd | 2 |
2 |
| Mitsubishi Heavy Industries, Ltd. | 8803 |
1 |
| Eaton Corporation | 1814 |
1 |
| Ford Global Technologies, LLC | 20723 |
1 |
| Other owners | 12 |