- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F27B - Furnaces, kilns, ovens or retorts in generalopen sintering or like apparatus
- F27B 3/08 - Hearth-type furnaces, e.g. of reverberatory typeElectric arc furnaces heated electrically, e.g. electric arc furnaces, with or without any other source of heat
Patent holdings for IPC class F27B 3/08
Total number of patents in this class: 386
10-year publication summary
|
17
|
23
|
27
|
23
|
31
|
18
|
26
|
33
|
52
|
30
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Danieli Automation SpA | 128 |
18 |
| Danieli & C. Officine Meccaniche S.p.A. | 720 |
16 |
| Primetals Technologies Germany GmbH | 220 |
15 |
| JFE Steel Corporation | 7527 |
13 |
| Hatch Ltd. | 221 |
11 |
| SMS Siemag Aktiengesellschaft | 486 |
11 |
| ArcelorMittal | 2672 |
10 |
| SMS Group GmbH | 1197 |
10 |
| Amerifab, Inc. | 52 |
9 |
| ABB Schweiz AG | 7607 |
8 |
| Tenova S.p.A. | 158 |
8 |
| Primetals Technologies Austria GmbH | 573 |
7 |
| Systems Spray Cooled, Inc. | 27 |
7 |
| SMS Group S.p.A. | 44 |
7 |
| Hyundai Steel Company | 531 |
6 |
| Nippon Steel Corporation | 6871 |
6 |
| KW Associates LLC | 13 |
6 |
| AMI International S.A.P.I. de C.V. | 46 |
6 |
| Daido Steel Co., Ltd. | 284 |
5 |
| Outokumpu Oyj | 265 |
5 |
| Other owners | 202 |