- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F27B - Furnaces, kilns, ovens, or retorts in general; open sintering or like apparatus
- F27B 3/04 - Hearth-type furnaces, e.g. of reverberatory type; Electric arc furnaces of multiple-chamber type; Combinations of hearth-type furnaces
Patent holdings for IPC class F27B 3/04
Total number of patents in this class: 109
10-year publication summary
11
|
6
|
7
|
7
|
2
|
14
|
6
|
8
|
9
|
6
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Molten Metal Equipment Innovations, LLC | 96 |
11 |
Pyrotek, Inc. | 193 |
7 |
Nippon Crucible Co., Ltd. | 38 |
5 |
Tounetsu Co., Ltd. | 25 |
5 |
Hydro Aluminium Rolled Products GmbH | 118 |
3 |
Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2865 |
3 |
LOI Thermprocess GmbH | 41 |
3 |
Novelis Inc. | 656 |
3 |
SMS Demag AG | 171 |
3 |
Takahashi, Kenzo | 16 |
3 |
Illinois Tool Works Inc. | 11152 |
2 |
ATI Properties LLC | 202 |
2 |
Central Motor Wheel Co., Ltd. | 92 |
2 |
Commonwealth Scientific and Industrial Research Organisation | 1652 |
2 |
Gautschi Engineering GmbH | 12 |
2 |
Sanken Sangyo Co., Ltd. | 5 |
2 |
Shoei Mfg. Co., Ltd. | 4 |
2 |
China ENFI Engineering Corp. | 91 |
2 |
Shoei Industrial Heating Equipment Shanghai Co., Ltd. | 2 |
2 |
Tsuyoshi Kajitani | 2 |
2 |
Other owners | 43 |