- All sections
- B - Performing operations; transporting
- 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
10
|
4
|
8
|
10
|
8
|
5
|
0
|
5
|
1
|
0
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
The Gleason Works | 202 |
4 |
Profilator GmbH & Co. KG | 64 |
4 |
Kennametal Inc. | 1380 |
3 |
Gleason-Pfauter Maschinenfabrik GmbH | 89 |
3 |
Liebherr-Verzahntechnik GmbH | 72 |
3 |
Mitsubishi Materials Corporation | 2378 |
3 |
OSG Corporation | 355 |
3 |
Sandvik Intellectual Property AB | 1634 |
3 |
Sumitomo Electric Industries, Ltd. | 14131 |
2 |
Danfoss Power Solutions S.r.l. | 5 |
2 |
Diametal AG, | 16 |
2 |
Fuji Manufacturing Co., Ltd. | 57 |
2 |
Mitsubishi Heavy Industries Machine Tool Co., Ltd. | 147 |
2 |
SECO Tools AB | 456 |
2 |
Sumitomo Electric Sintered Alloy, Ltd. | 214 |
2 |
Hyperion Materials & Technologies (Sweden) AB | 75 |
2 |
Zhejiang Shangyou Cutting Tool Co., Ltd | 2 |
2 |
Mitsubishi Heavy Industries, Ltd. | 8217 |
1 |
Eaton Corporation | 1839 |
1 |
Ford Global Technologies, LLC | 19702 |
1 |
Other owners | 12 |