- All sections
- B - Performing operationstransporting
- B23F - Making gears or toothed racks
- B23F 21/03 - Honing tools
Patent holdings for IPC class B23F 21/03
Total number of patents in this class: 35
10-year publication summary
|
2
|
0
|
3
|
2
|
2
|
2
|
4
|
0
|
1
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Gleason Switzerland AG | 10 |
4 |
| Profilator GmbH & Co. KG | 63 |
3 |
| Audi AG | 7285 |
2 |
| The Gleason Works | 201 |
2 |
| Liebherr-Verzahntechnik GmbH | 69 |
2 |
| Robert Welch Designs Limited | 74 |
2 |
| Maintain Your Edge, LLC | 7 |
2 |
| 3m Innovative Properties Company | 17976 |
1 |
| Sumitomo Electric Industries, Ltd. | 15015 |
1 |
| ZF Friedrichshafen AG | 7054 |
1 |
| B & J Manufacturing Company | 2 |
1 |
| Edgecraft Corporation | 124 |
1 |
| Hantover, Inc. | 63 |
1 |
| High Tech Ceramic EK | 3 |
1 |
| Kinik Company | 40 |
1 |
| Mani, Inc. | 162 |
1 |
| MDC Max Daetwyler AG | 7 |
1 |
| Metaldyne Company LLC | 25 |
1 |
| Mitsubishi Materials Corporation | 2408 |
1 |
| Saint-Gobain Abrasifs | 678 |
1 |
| Other owners | 5 |