- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F27D - Details or accessories of furnaces, kilns, ovens or retorts, in so far as they are of kinds occurring in more than one kind of furnace
- F27D 7/04 - Circulating atmospheres by mechanical means
Patent holdings for IPC class F27D 7/04
Total number of patents in this class: 173
10-year publication summary
|
12
|
15
|
7
|
16
|
10
|
8
|
10
|
2
|
11
|
14
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Illinois Tool Works Inc. | 11866 |
10 |
| JFE Steel Corporation | 7549 |
9 |
| Quintus Technologies AB | 70 |
8 |
| Corning Incorporated | 10510 |
6 |
| IHI Corporation | 3535 |
6 |
| IHI Machinery and Furnace Co., Ltd. | 76 |
6 |
| Ebner Industrieofenbau GmbH | 142 |
5 |
| ECM Technologies | 35 |
5 |
| Primetals Technologies Austria GmbH | 575 |
4 |
| Pan Pacific Copper Co., Ltd. | 31 |
3 |
| POSCO | 2142 |
3 |
| The Boeing Company | 20163 |
2 |
| Tokyo Electron Limited | 13824 |
2 |
| Mitsubishi Chemical Corporation | 4723 |
2 |
| Beijing GoldWind Science & Creation Windpower Equipment Co., Ltd. | 390 |
2 |
| Central Motor Wheel Co., Ltd. | 90 |
2 |
| Duke Manufacturing Co. | 110 |
2 |
| Florida State University Research Foundation, Inc. | 839 |
2 |
| Gautschi Engineering GmbH | 12 |
2 |
| Ipsen International GmbH | 37 |
2 |
| Other owners | 90 |