- 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 37/26 - Making finned or ribbed tubes by fixing strip or like material to tubes helically-ribbed tubes
Patent holdings for IPC class B21C 37/26
Total number of patents in this class: 21
10-year publication summary
|
3
|
1
|
1
|
4
|
3
|
1
|
1
|
0
|
0
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Keystone Tower Systems, Inc. | 47 |
3 |
| Marc Fitzner | 2 |
2 |
| GEA Batignolles Technologies Thermiques | 8 |
1 |
| James Stewart | 2 |
1 |
| Leifeld Metal Spinning AG | 23 |
1 |
| Nanjing Lianzhong Construction Engineering Technology Co., Ltd. | 18 |
1 |
| Numalliance | 19 |
1 |
| Paul McMillen | 1 |
1 |
| Retermia Oy | 14 |
1 |
| Sentek Pty Ltd | 26 |
1 |
| Stricker-IRD Patent GMR | 1 |
1 |
| Talos Engineered Products, LLC | 6 |
1 |
| Umicore AG & Co. KG | 855 |
1 |
| Energoinstal S.A. | 4 |
1 |
| Robo Helix Pty Limited | 3 |
1 |
| Consult Seppo | 2 |
1 |
| Stricker-ird Patent GbR | 1 |
1 |
| Highly Marelli Japan Corporation | 41 |
1 |
| Other owners | 0 |