- All sections
- B - Performing operationstransporting
- 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: 127
10-year publication summary
|
14
|
16
|
14
|
7
|
11
|
5
|
8
|
5
|
7
|
3
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| The Gleason Works | 198 |
15 |
| Liebherr-Verzahntechnik GmbH | 78 |
13 |
| Profilator GmbH & Co. KG | 62 |
11 |
| Gleason-Pfauter Maschinenfabrik GmbH | 96 |
7 |
| ZF Friedrichshafen AG | 7259 |
5 |
| Reishauer AG | 104 |
5 |
| JTEKT Corporation | 2605 |
4 |
| Klingelnberg AG | 84 |
4 |
| Prawema Antriebstechnik GmbH | 38 |
4 |
| Toyota Motor Corporation | 35927 |
3 |
| Klingelnberg GmbH | 57 |
3 |
| Mitsubishi Heavy Industries Machine Tool Co., Ltd. | 136 |
3 |
| Mitsubishi Heavy Industries, Ltd. | 9168 |
2 |
| Mazda Motor Corporation | 3304 |
2 |
| Audi AG | 7571 |
2 |
| Ecoroll AG Werkzeugtechnik | 16 |
2 |
| Engineered Abrasives, Inc. | 31 |
2 |
| GD Midea Air-Conditioning Equipment Co., Ltd. | 2096 |
2 |
| Midea Group Co., Ltd. | 5052 |
2 |
| Rheinisch-Westfälische Technische Hochschule (RWTH) Aachen | 316 |
2 |
| Other owners | 34 |