- 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 37/15 - Making tubes of special shape; Making the fittings
Patent holdings for IPC class B21C 37/15
Total number of patents in this class: 276
10-year publication summary
|
18
|
31
|
22
|
27
|
32
|
27
|
17
|
14
|
11
|
8
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 6289 |
16 |
| Nippon Steel Corporation | 5819 |
9 |
| Eisenbau Kramer GmbH | 13 |
6 |
| AB Sandvik Materials Technology, | 30 |
6 |
| MAHLE International GmbH | 2658 |
5 |
| Sandvik Intellectual Property AB | 1576 |
5 |
| Tata Steel Nederland Technology BV | 144 |
5 |
| Technip France | 728 |
5 |
| Vallourec Tubos do Brasil S.A. | 12 |
5 |
| The Boeing Company | 19775 |
4 |
| Hanon Systems | 1717 |
4 |
| Valeo Systemes Thermiques | 2535 |
4 |
| Medtronic, Inc. | 9931 |
3 |
| Keystone Tower Systems, Inc. | 46 |
3 |
| Nakata Manufacturing Co., Ltd. | 37 |
3 |
| Sandvik Materials Technology Deutschland GmbH | 59 |
3 |
| Steyr Mannlicher GmbH | 17 |
3 |
| Vavit S.r.l. | 3 |
3 |
| Valme S.r.l. - Unico Socio | 4 |
3 |
| BASF SE | 20070 |
2 |
| Other owners | 179 |