- All sections
- B - Performing operations; transporting
- B23F - Making gears or toothed racks
- B23F 21/02 - Grinding discs; Grinding worms
Patent holdings for IPC class B23F 21/02
Total number of patents in this class: 70
10-year publication summary
5
|
4
|
6
|
3
|
8
|
2
|
4
|
8
|
4
|
0
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Liebherr-Verzahntechnik GmbH | 72 |
7 |
Noritake Co., Limited | 224 |
6 |
Mitsubishi Heavy Industries, Ltd. | 8217 |
5 |
KAPP Werkzeugmaschinen GmbH | 10 |
4 |
Mitsubishi Heavy Industries Machine Tool Co., Ltd. | 147 |
4 |
Niles Werkzeugmaschinen GmbH | 19 |
4 |
Noritake Coated Abrasive Co., Ltd | 13 |
4 |
KAPP NILES GmbH & Co. KG | 24 |
4 |
Honda Motor Co., Ltd. | 24537 |
3 |
Klingelnberg GmbH | 54 |
3 |
Reishauer AG | 79 |
3 |
Gleason-Pfauter Maschinenfabrik GmbH | 89 |
2 |
The Gleason Works | 202 |
2 |
Nitolex Corporation | 3 |
2 |
Rheinisch-Westfälische Technische Hochschule (RWTH) Aachen | 270 |
2 |
Toyota Motor Hokkaido Inc. | 8 |
2 |
Yushiro Chemical Industry Co., Ltd. | 56 |
2 |
United Technologies Corporation | 2328 |
1 |
ZF Friedrichshafen AG | 6820 |
1 |
AI Machine Tech Co., Ltd. | 2 |
1 |
Other owners | 8 |