- 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: 335
10-year publication summary
|
26
|
14
|
19
|
25
|
21
|
30
|
17
|
22
|
28
|
34
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Danieli & C. Officine Meccaniche S.p.A. | 716 |
17 |
| Danieli Automation SpA | 123 |
16 |
| Primetals Technologies Germany GmbH | 204 |
15 |
| Hatch Ltd. | 216 |
11 |
| JFE Steel Corporation | 6935 |
11 |
| SMS Siemag Aktiengesellschaft | 505 |
11 |
| SMS Group GmbH | 1131 |
10 |
| Amerifab, Inc. | 51 |
8 |
| ArcelorMittal | 2324 |
8 |
| Systems Spray Cooled, Inc. | 52 |
7 |
| Tenova S.p.A. | 156 |
7 |
| ABB Schweiz AG | 7055 |
6 |
| KW Associates LLC | 13 |
6 |
| AMI International S.A.P.I. de C.V. | 40 |
6 |
| Daido Steel Co., Ltd. | 271 |
5 |
| Outokumpu Oyj | 261 |
5 |
| Primetals Technologies Austria GmbH | 540 |
5 |
| SMS Group S.p.A. | 38 |
5 |
| Hyundai Steel Company | 439 |
4 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2877 |
4 |
| Other owners | 168 |