- All sections
- B - Performing operations; transporting
- B21C - Manufacture of metal sheets, wire, rods, tubes, profiles or like semi-manufactured products otherwise than by rolling; auxiliary operations used in connection with metal-working without essentially removing material
- B21C 37/30 - Finishing tubes, e.g. sizing, burnishing
Patent holdings for IPC class B21C 37/30
Total number of patents in this class: 104
10-year publication summary
9
|
5
|
1
|
5
|
6
|
6
|
7
|
2
|
5
|
3
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
JFE Steel Corporation | 6067 |
23 |
Nippon Steel Corporation | 5649 |
4 |
Forum US, Inc. | 315 |
3 |
Nakata Manufacturing Co., Ltd. | 37 |
3 |
Belvac Production Machinery, Inc. | 132 |
2 |
Dalian University of Technology | 1387 |
2 |
Rattunde & Co GmbH | 46 |
2 |
Rattunde und Co GmbH | 2 |
2 |
Salzgitter Flachstahl GmbH | 155 |
2 |
SMS Group GmbH | 1029 |
2 |
Solar Turbines Incorporated | 452 |
2 |
Sugino Machine Limited | 152 |
2 |
Sumitomo Metal Industries, Ltd. | 453 |
2 |
TRUMPF Werkzeugmaschinen GmbH + Co. KG | 585 |
2 |
Mannesmann Precision Tubes GmbH | 6 |
2 |
Rattunde AG | 66 |
2 |
Jiangsu Yinhuan Precision Steel Tube CO.,LTD. | 6 |
2 |
Variperm Energy Services Inc. | 59 |
2 |
Baoyin Special Steel Tube Co., Ltd. | 3 |
2 |
Samsung Electronics Co., Ltd. | 131630 |
1 |
Other owners | 40 |