- 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 37/18 - Making tubes with varying diameter in longitudinal direction conical tubes
Patent holdings for IPC class B21C 37/18
Total number of patents in this class: 45
10-year publication summary
|
2
|
3
|
5
|
5
|
2
|
5
|
3
|
3
|
1
|
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 |
26 |
| Officine Meccaniche Murgesi S.r.l. | 2 |
2 |
| Wobben Properties GmbH | 1212 |
2 |
| Toyota Motor Corporation | 30499 |
1 |
| Cleveland Tool & Machine, Inc. | 3 |
1 |
| Emcon Technologies Germany (augsburg) GmbH | 86 |
1 |
| Lincoln Global, Inc. | 2161 |
1 |
| Muhr und Bender KG | 87 |
1 |
| Nakata Manufacturing Co., Ltd. | 36 |
1 |
| Nippon Steel Corporation | 6018 |
1 |
| Novelis Inc. | 118 |
1 |
| Sanhua (Hangzhou) Micro Channel Heat Exchanger Co., Ltd. | 128 |
1 |
| SMS Group GmbH | 1080 |
1 |
| Soutec Soudronic AG | 4 |
1 |
| ThyssenKrupp Steel AG | 64 |
1 |
| ThyssenKrupp Steel Europe AG | 956 |
1 |
| Uztek Endustri Tesisleri Insaat Imalat Ve Montaj Sanayi Ve Ticaret Limited Sirketi | 1 |
1 |
| Kawasaki Jukogyo Kabushiki Kaisha (trading as Kawasaki Heavy Industries, Ltd.) | 3020 |
1 |
| Other owners | 0 |