- All sections
- B - Performing operationstransporting
- B21K - Making forged or pressed metal products, e.g. horse-shoes, rivets, bolts or wheels
- B21K 1/70 - Making machine elements nuts of special shape, e.g. self-locking nuts, wing nuts
Patent holdings for IPC class B21K 1/70
Total number of patents in this class: 43
10-year publication summary
|
4
|
4
|
5
|
2
|
2
|
0
|
3
|
1
|
2
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NSK Ltd. | 2772 |
4 |
| Hyundai Motor Company | 21960 |
3 |
| Kia Motors Corporation | 7755 |
3 |
| Hewi G. Winker GmbH & Co. KG | 6 |
3 |
| Sungwoo Hitech Co., Ltd. | 87 |
3 |
| NTN Corporation | 4978 |
2 |
| MacLean-Fogg Company | 101 |
2 |
| SF Handels- und Besitzgesellschaft mbH | 15 |
2 |
| Protech Korea Co. Ltd. | 2 |
2 |
| Panasonic Intellectual Property Management Co., Ltd. | 31330 |
1 |
| Arnold Permanent Nut, LLC | 5 |
1 |
| Flaig, Hartmut | 12 |
1 |
| HBS Bolzenschweiss-Systeme GmbH & Co. KG | 5 |
1 |
| JPB Systeme | 44 |
1 |
| LISI Aerospace | 129 |
1 |
| Penn Engineering & Manufacturing Corp. | 78 |
1 |
| Shinjo Holdings Co., Ltd. | 12 |
1 |
| Watoku Co., Ltd. | 1 |
1 |
| Wesco Distribution, Inc. | 164 |
1 |
| Gerrit Pies | 2 |
1 |
| Other owners | 8 |