- All sections
- B - Performing operationstransporting
- B21C - Manufacture of metal sheets, wire, rods, tubes, profiles or like semi-manufactured products otherwise than by rollingauxiliary operations used in connection with metal-working without essentially removing material
- B21C 37/08 - Making tubes with welded or soldered seams
Patent holdings for IPC class B21C 37/08
Total number of patents in this class: 533
10-year publication summary
|
37
|
25
|
55
|
41
|
46
|
38
|
33
|
24
|
29
|
10
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 6708 |
152 |
| Nippon Steel Corporation | 6122 |
43 |
| Nippon Steel & Sumitomo Metal Corporation | 1987 |
19 |
| Nakata Manufacturing Co., Ltd. | 36 |
16 |
| SMS Group GmbH | 1102 |
9 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 3899 |
7 |
| Shape Corp. | 173 |
7 |
| Tenaris Coiled Tubes, LLC | 22 |
7 |
| ThyssenKrupp Steel Europe AG | 952 |
7 |
| Nexans | 590 |
5 |
| Sanoh Industrial Co., Ltd. | 207 |
5 |
| Titan Trailers Inc. | 81 |
5 |
| Aperam | 117 |
4 |
| Baoshan Iron & Steel Co., Ltd. | 947 |
4 |
| Daiwa Steel Tube Industries Co., Ltd. | 11 |
4 |
| Sumitomo Metal Industries, Ltd. | 391 |
4 |
| ThyssenKrupp Steel AG | 60 |
4 |
| The Boeing Company | 19953 |
3 |
| Eisenbau Kramer GmbH | 7 |
3 |
| Forum US, Inc. | 326 |
3 |
| Other owners | 222 |