- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F27B - Furnaces, kilns, ovens, or retorts in general; open 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: 142
10-year publication summary
|
16
|
23
|
11
|
11
|
12
|
7
|
10
|
12
|
12
|
3
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Andritz Technology and Asset Management GmbH | 89 |
7 |
| JFE Steel Corporation | 6067 |
7 |
| Nippon Steel Corporation | 5649 |
7 |
| ONEJOON GmbH | 24 |
7 |
| Eisenmann SE | 154 |
6 |
| Fives Stein | 96 |
6 |
| IHI Corporation | 3268 |
6 |
| Mitsubishi Chemical Corporation | 4313 |
5 |
| Ebner Industrieofenbau GmbH | 132 |
5 |
| Illinois Tool Works Inc. | 11152 |
4 |
| Corning Incorporated | 9932 |
3 |
| Cockerill Maintenance & Ingenierie SA | 82 |
3 |
| Hexcel Corporation | 305 |
3 |
| Otto Junker GmbH | 26 |
3 |
| Toyota Motor Corporation | 28582 |
2 |
| Panasonic Corporation | 20786 |
2 |
| Mitsubishi Rayon Co., Ltd. | 1003 |
2 |
| ArcelorMittal | 1887 |
2 |
| Bruckner Maschinenbau GmbH | 54 |
2 |
| IHI Machinery and Furnace Co., Ltd. | 79 |
2 |
| Other owners | 58 |