- 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 3/08 - Screw feedersScrew dischargers
Patent holdings for IPC class F27D 3/08
Total number of patents in this class: 85
10-year publication summary
|
8
|
7
|
8
|
8
|
4
|
10
|
8
|
7
|
3
|
4
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| E.t.i.a. Evaluation Technologique, Ingenierie et Applications | 39 |
6 |
| Novelis Inc. | 752 |
5 |
| Metso Metals Oy | 207 |
5 |
| Saint-Gobain Isover | 631 |
4 |
| Owens-Brockway Glass Container Inc. | 764 |
3 |
| Siemens VAI Metals Technologies GmbH | 222 |
2 |
| Holcim Technology Ltd. | 989 |
2 |
| The Japan Steel Works, Ltd. | 744 |
2 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2871 |
2 |
| Outotec (Finland) Oy | 480 |
2 |
| POSCO | 2186 |
2 |
| Primetals Technologies Austria GmbH | 535 |
2 |
| Hirochiku Co., Ltd | 11 |
2 |
| LG Chem, Ltd. | 17639 |
1 |
| Bridgestone Corporation | 7237 |
1 |
| Air Products and Chemicals, Inc. | 1424 |
1 |
| ALD Vacuum Technologies GmbH | 139 |
1 |
| Chugai Ro Co., Ltd. | 130 |
1 |
| DPS Bristol (Holdings) Ltd | 8 |
1 |
| Ecohispanica I MAS D Medioambiental S.L. | 7 |
1 |
| Other owners | 39 |