- 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: 303
10-year publication summary
35
|
24
|
26
|
34
|
20
|
27
|
21
|
16
|
15
|
4
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Diversitech Corporation | 200 |
13 |
Uponor Innovation AB | 301 |
11 |
Milwaukee Electric Tool Corporation | 3572 |
9 |
Rothenberger AG | 116 |
9 |
Nippon Steel Corporation | 5649 |
8 |
Fatigue Technology, Inc. | 59 |
7 |
JFE Steel Corporation | 6067 |
7 |
Victor Equipment Company | 291 |
7 |
Rehau AG + Co | 419 |
5 |
Uniweld Products, Inc. | 73 |
5 |
Whitaker Chalk Swindle & Schwartz PLLC | 7 |
5 |
Belvac Production Machinery, Inc. | 132 |
4 |
Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2865 |
4 |
Sumitomo Metal Industries, Ltd. | 453 |
4 |
Victaulic Company | 664 |
4 |
Voss Fluid GmbH | 20 |
4 |
Zhejiang Value Mechanical & Electrical Products Co., Ltd. | 11 |
4 |
BLM S.p.A. | 21 |
3 |
Gustav Klauke GmbH | 139 |
3 |
Hanon Systems | 1632 |
3 |
Other owners | 184 |