- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F27B - Furnaces, kilns, ovens or retorts in generalopen sintering or like apparatus
- F27B 3/04 - Hearth-type furnaces, e.g. of reverberatory typeElectric arc furnaces of multiple-hearth typeHearth-type furnaces, e.g. of reverberatory typeElectric arc furnaces of multiple-chamber typeCombinations of hearth-type furnaces
Patent holdings for IPC class F27B 3/04
Total number of patents in this class: 144
10-year publication summary
|
7
|
7
|
2
|
14
|
6
|
8
|
10
|
16
|
14
|
4
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Molten Metal Equipment Innovations, LLC | 99 |
12 |
| Pyrotek, Inc. | 204 |
9 |
| Tounetsu Co., Ltd. | 31 |
6 |
| Nippon Crucible Co., Ltd. | 26 |
5 |
| Commissariat à l'énergie atomique et aux energies alternatives | 11137 |
3 |
| Hydro Aluminium Rolled Products GmbH | 113 |
3 |
| Hyundai Steel Company | 550 |
3 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2844 |
3 |
| LOI Thermprocess GmbH | 33 |
3 |
| Novelis Inc. | 788 |
3 |
| StrikoWestofen GmbH | 28 |
3 |
| Technological Resources Pty. Limited | 443 |
3 |
| Illinois Tool Works Inc. | 11902 |
2 |
| Avril | 74 |
2 |
| Axens | 300 |
2 |
| Bionext | 24 |
2 |
| Central Motor Wheel Co., Ltd. | 90 |
2 |
| Commonwealth Scientific and Industrial Research Organisation | 1651 |
2 |
| Daiki Engineering Co., Ltd. | 2 |
2 |
| Gautschi Engineering GmbH | 12 |
2 |
| Other owners | 72 |