- All sections
- B - Performing operations; transporting
- B21D - Working or processing of sheet metal or metal tubes, rods or profiles without essentially removing material; punching metal
- B21D 41/02 - Enlarging
Patent holdings for IPC class B21D 41/02
Total number of patents in this class: 297
10-year publication summary
|
24
|
26
|
34
|
20
|
27
|
21
|
16
|
15
|
12
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Diversitech Corporation | 201 |
13 |
| Uponor Innovation AB | 295 |
11 |
| Milwaukee Electric Tool Corporation | 4084 |
9 |
| Rothenberger AG | 112 |
9 |
| Nippon Steel Corporation | 5991 |
8 |
| Fatigue Technology, Inc. | 55 |
7 |
| JFE Steel Corporation | 6538 |
7 |
| Rehau AG + Co | 410 |
5 |
| Uniweld Products, Inc. | 72 |
5 |
| Victor Equipment Company | 296 |
5 |
| Belvac Production Machinery, Inc. | 151 |
4 |
| Sumitomo Metal Industries, Ltd. | 420 |
4 |
| Victaulic Company | 634 |
4 |
| Voss Fluid GmbH | 21 |
4 |
| Whitaker Chalk Swindle & Schwartz PLLC | 7 |
4 |
| BLM S.p.A. | 21 |
3 |
| Gustav Klauke GmbH | 144 |
3 |
| Hanon Systems | 1814 |
3 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2905 |
3 |
| Kobe Steel, Ltd. | 863 |
3 |
| Other owners | 183 |