- 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 37/08 - Making tubes with welded or soldered seams
Patent holdings for IPC class B21C 37/08
Total number of patents in this class: 532
10-year publication summary
48
|
37
|
25
|
55
|
41
|
46
|
38
|
31
|
24
|
18
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
JFE Steel Corporation | 6067 |
144 |
Nippon Steel Corporation | 5649 |
42 |
Nippon Steel & Sumitomo Metal Corporation | 1990 |
19 |
Nakata Manufacturing Co., Ltd. | 37 |
16 |
SMS Group GmbH | 1029 |
9 |
ThyssenKrupp Steel Europe AG | 924 |
8 |
L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 3515 |
7 |
Shape Corp. | 166 |
7 |
Sumitomo Metal Industries, Ltd. | 453 |
7 |
Tenaris Coiled Tubes, LLC | 21 |
7 |
Eisenbau Kramer GmbH | 13 |
5 |
Nexans | 588 |
5 |
Sanoh Industrial Co., Ltd. | 189 |
5 |
Titan Trailers Inc. | 78 |
5 |
The Boeing Company | 19843 |
4 |
Aperam | 104 |
4 |
Daiwa Steel Tube Industries Co., Ltd. | 12 |
4 |
ThyssenKrupp Steel AG | 80 |
4 |
Nippon Steel Nisshin Co., Ltd. | 106 |
4 |
Baoshan Iron & Steel Co., Ltd. | 832 |
3 |
Other owners | 223 |