- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- 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 1/18 - Door frames; Doors, lids, removable covers
Patent holdings for IPC class F27D 1/18
Total number of patents in this class: 136
10-year publication summary
|
13
|
7
|
10
|
13
|
9
|
13
|
10
|
9
|
8
|
2
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Tokyo Electron Limited | 11599 |
4 |
| Aisin Takaoka Co., Ltd. | 101 |
4 |
| SMS CONCAST ITALIA S.p.A. | 9 |
4 |
| ASM International N.V. | 150 |
3 |
| ASM IP Holding B.V. | 1715 |
3 |
| Hyundai Steel Company | 310 |
3 |
| IHI Corporation | 3268 |
3 |
| Kokusai Electric Corporation | 1791 |
3 |
| ONEJOON GmbH | 24 |
3 |
| Siemens AG | 24990 |
2 |
| Siemens VAI Metals Technologies GmbH | 233 |
2 |
| Altek, L.L.C. | 16 |
2 |
| Dowa Thermotech Co., Ltd. | 41 |
2 |
| Fuchs Technology Holding AG | 6 |
2 |
| Ivoclar Vivadent AG | 1060 |
2 |
| Nucor Corporation | 425 |
2 |
| Outotec Oyj | 318 |
2 |
| Schunk Kohlenstofftechnik GmbH | 126 |
2 |
| Semes Co., Ltd. | 1119 |
2 |
| SMS Siemag Aktiengesellschaft | 529 |
2 |
| Other owners | 84 |