- All sections
- B - Performing operationstransporting
- B21D - Working or processing of sheet metal or metal tubes, rods or profiles without essentially removing materialpunching metal
- B21D 39/20 - Tube expanders with mandrels, e.g. expandable
Patent holdings for IPC class B21D 39/20
Total number of patents in this class: 228
10-year publication summary
|
14
|
20
|
28
|
18
|
12
|
19
|
19
|
11
|
10
|
5
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2874 |
29 |
| Kobe Steel, Ltd. | 872 |
15 |
| JFE Steel Corporation | 6840 |
13 |
| Kyoshin Kogyo Co., Ltd. | 26 |
6 |
| Nippon Steel Corporation | 6238 |
6 |
| Uponor Innovation AB | 286 |
6 |
| Milwaukee Electric Tool Corporation | 4390 |
5 |
| Daikin Industries, Ltd. | 9995 |
4 |
| Showa Denko K.K. | 2230 |
4 |
| Rothenberger AG | 113 |
4 |
| Enventure Global Technology Inc. | 37 |
4 |
| Flowco Production Solutions, LLC | 68 |
3 |
| Guizhou Anda Aviation Forging Co., Ltd | 5 |
3 |
| UACJ Corporation | 695 |
3 |
| Valeo Systemes Thermiques | 2729 |
3 |
| Toyota Motor Corporation | 32116 |
2 |
| The Boeing Company | 20043 |
2 |
| Airbus Operations S.A.S. | 2477 |
2 |
| Enventure Global Technology, L.L.C. | 89 |
2 |
| Mitsubishi Electric Corporation | 46093 |
2 |
| Other owners | 110 |