- All sections
- C - Chemistrymetallurgy
- C21D - Modifying the physical structure of ferrous metalsgeneral devices for heat treatment of ferrous or non-ferrous metals or alloysmaking metal malleable, e.g. by decarburisation or tempering
- C21D 9/14 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for tubular bodies or pipes wear-resistant or pressure-resistant pipes
Patent holdings for IPC class C21D 9/14
Total number of patents in this class: 98
10-year publication summary
|
17
|
6
|
10
|
7
|
6
|
5
|
5
|
3
|
7
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Steel Corporation | 6238 |
13 |
| JFE Steel Corporation | 6840 |
9 |
| Tenaris Coiled Tubes, LLC | 22 |
9 |
| Baoshan Iron & Steel Co., Ltd. | 964 |
5 |
| Robert Bosch GmbH | 42689 |
3 |
| DALMINE S.p.A. | 22 |
3 |
| Tenaris Connections B.V. | 167 |
3 |
| Benteler Steel/Tube GmbH | 35 |
3 |
| Areva NP | 214 |
2 |
| IBF S.p.A. | 5 |
2 |
| Sandvik Materials Technology Deutschland GmbH | 59 |
2 |
| Siderca S.A.I.C. | 10 |
2 |
| Vallourec Deutschland GmbH | 40 |
2 |
| Usui Co., Ltd. | 116 |
2 |
| Tubacex Innovacion A.I.E. | 8 |
2 |
| NIPPON STEEL Stainless Steel Corporation | 287 |
2 |
| RWE Technology GmbH | 4 |
2 |
| ExxonMobil Technology and Engineering Company | 1080 |
2 |
| Alleima GmbH | 27 |
2 |
| Honda Motor Co., Ltd. | 25251 |
1 |
| Other owners | 27 |