- 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 1/18 - Door framesDoors, lids or removable covers
Patent holdings for IPC class F27D 1/18
Total number of patents in this class: 146
10-year publication summary
|
7
|
10
|
13
|
9
|
13
|
10
|
9
|
8
|
11
|
8
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Tokyo Electron Limited | 12620 |
5 |
| Aisin Takaoka Co., Ltd. | 98 |
4 |
| SMS CONCAST ITALIA S.p.A. | 9 |
4 |
| ASM IP Holding B.V. | 2057 |
3 |
| Hyundai Steel Company | 425 |
3 |
| IHI Corporation | 3414 |
3 |
| Kokusai Electric Corporation | 1993 |
3 |
| ONEJOON GmbH | 27 |
3 |
| Jiangsu Leadmicro Nano Technology Co., Ltd. | 52 |
3 |
| Siemens AG | 24525 |
2 |
| Siemens VAI Metals Technologies GmbH | 222 |
2 |
| NGK Insulators, Ltd. | 4944 |
2 |
| Altek, L.L.C. | 15 |
2 |
| ASM International N.V. | 134 |
2 |
| Dowa Thermotech Co., Ltd. | 44 |
2 |
| Fuchs Technology Holding AG | 6 |
2 |
| Ivoclar Vivadent AG | 1049 |
2 |
| Nippon Electric Glass Co., Ltd. | 2453 |
2 |
| Nucor Corporation | 415 |
2 |
| Schunk Kohlenstofftechnik GmbH | 131 |
2 |
| Other owners | 93 |