- All sections
- B - Performing operationstransporting
- B21H - Making particular metal objects by rolling, e.g. screws, wheels, rings, barrels, balls
- B21H 3/12 - Making helical bodies or bodies having parts of helical shape articles with helicoidal surface
Patent holdings for IPC class B21H 3/12
Total number of patents in this class: 11
10-year publication summary
|
1
|
0
|
1
|
0
|
1
|
0
|
0
|
0
|
0
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Form Roll Tech Co., Ltd. | 12 |
2 |
| NGK Spark Plug Co., Ltd. | 891 |
1 |
| Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V. | 4969 |
1 |
| ILJIN Steel Corporation | 7 |
1 |
| Lenham Machinery Limited | 4 |
1 |
| Standard Lifters, Inc. | 96 |
1 |
| The Toro Company | 966 |
1 |
| Uniflyte Inc. | 3 |
1 |
| Ferroll GmbH | 4 |
1 |
| Aktiebolaget Ledarskruv | 3 |
1 |
| Other owners | 0 |