- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F27B - Furnaces, kilns, ovens or retorts in generalopen sintering or like apparatus
- F27B 9/28 - Furnaces through which the charge is moved mechanically, e.g. of tunnel type Similar furnaces in which the charge moves by gravity for treating continuous lengths of work
Patent holdings for IPC class F27B 9/28
Total number of patents in this class: 194
10-year publication summary
|
11
|
11
|
12
|
7
|
11
|
12
|
14
|
15
|
16
|
13
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| ONEJOON GmbH | 35 |
8 |
| Andritz Technology and Asset Management GmbH | 78 |
7 |
| JFE Steel Corporation | 7549 |
7 |
| Nippon Steel Corporation | 6895 |
7 |
| Corning Incorporated | 10510 |
6 |
| ArcelorMittal | 2680 |
6 |
| Eisenmann SE | 146 |
6 |
| Fives Stein | 108 |
6 |
| IHI Corporation | 3535 |
6 |
| Mitsubishi Chemical Corporation | 4723 |
5 |
| Ebner Industrieofenbau GmbH | 142 |
5 |
| Quantumscape Battery, Inc. | 221 |
5 |
| Illinois Tool Works Inc. | 11866 |
4 |
| Drever International S.A. | 14 |
4 |
| Primetals Technologies Austria GmbH | 575 |
4 |
| SMS Group GmbH | 1200 |
4 |
| John Cockerill S.A. | 104 |
4 |
| Toyota Motor Corporation | 35813 |
3 |
| Cockerill Maintenance & Ingenierie SA | 79 |
3 |
| Otto Junker GmbH | 26 |
3 |
| Other owners | 91 |