- All sections
- B - Performing operations; transporting
- B23F - Making gears or toothed racks
- B23F 19/00 - Finishing gear teeth by other tools than those used for manufacturing gear teeth
Patent holdings for IPC class B23F 19/00
Total number of patents in this class: 119
10-year publication summary
|
8
|
9
|
14
|
16
|
14
|
7
|
10
|
5
|
8
|
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 |
14 |
| The Gleason Works | 202 |
13 |
| Profilator GmbH & Co. KG | 64 |
11 |
| Gleason-Pfauter Maschinenfabrik GmbH | 89 |
7 |
| ZF Friedrichshafen AG | 6820 |
5 |
| Klingelnberg AG | 74 |
4 |
| Toyota Motor Corporation | 28582 |
3 |
| Klingelnberg GmbH | 54 |
3 |
| Mitsubishi Heavy Industries Machine Tool Co., Ltd. | 147 |
3 |
| Prawema Antriebstechnik GmbH | 34 |
3 |
| 3m Innovative Properties Company | 18406 |
2 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
2 |
| JTEKT Corporation | 2423 |
2 |
| Mazda Motor Corporation | 3087 |
2 |
| Audi AG | 7153 |
2 |
| Ecoroll AG Werkzeugtechnik | 15 |
2 |
| Engineered Abrasives, Inc. | 30 |
2 |
| GD Midea Air-Conditioning Equipment Co., Ltd. | 1475 |
2 |
| Midea Group Co., Ltd. | 4025 |
2 |
| Reishauer AG | 79 |
2 |
| Other owners | 33 |