- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F27B - Furnaces, kilns, ovens or retorts in generalopen sintering or like apparatus
- F27B 9/04 - Furnaces through which the charge is moved mechanically, e.g. of tunnel type Similar furnaces in which the charge moves by gravity adapted for treating the charge in vacuum or special atmosphere
Patent holdings for IPC class F27B 9/04
Total number of patents in this class: 175
10-year publication summary
|
19
|
12
|
9
|
11
|
13
|
8
|
20
|
17
|
12
|
7
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 6816 |
8 |
| NGK Insulators, Ltd. | 4941 |
6 |
| Cockerill Maintenance & Ingenierie SA | 80 |
6 |
| Quantumscape Battery, Inc. | 193 |
6 |
| Andritz Technology and Asset Management GmbH | 90 |
5 |
| Research Institute of Industrial Science & Technology | 502 |
5 |
| Illinois Tool Works Inc. | 11454 |
4 |
| Corning Incorporated | 10252 |
4 |
| ONEJOON GmbH | 27 |
4 |
| ArcelorMittal | 2272 |
3 |
| King Yuan Dar Metal Enterprise Co., Ltd. | 6 |
3 |
| Linde Aktiengesellschaft | 1516 |
3 |
| Primetals Technologies Austria GmbH | 531 |
3 |
| Murata Manufacturing Co., Ltd. | 24465 |
2 |
| Toray Industries, Inc. | 6931 |
2 |
| Audi AG | 7345 |
2 |
| AUMUND Fordertechnik GmbH | 43 |
2 |
| Dowa Thermotech Co., Ltd. | 44 |
2 |
| Ebner Industrieofenbau GmbH | 142 |
2 |
| Eisenmann SE | 146 |
2 |
| Other owners | 101 |