- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F27B - Furnaces, kilns, ovens or retorts in generalopen sintering or like apparatus
- F27B 3/28 - Arrangement of controlling, monitoring, alarm or like devices
Patent holdings for IPC class F27B 3/28
Total number of patents in this class: 283
10-year publication summary
|
14
|
13
|
20
|
19
|
19
|
12
|
21
|
20
|
33
|
19
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Danieli Automation SpA | 128 |
18 |
| ArcelorMittal | 2672 |
12 |
| Danieli & C. Officine Meccaniche S.p.A. | 720 |
12 |
| Siemens AG | 24029 |
11 |
| Primetals Technologies Germany GmbH | 220 |
10 |
| Tenova S.p.A. | 158 |
9 |
| KW Associates LLC | 13 |
9 |
| Hatch Ltd. | 221 |
8 |
| ABB Schweiz AG | 7607 |
7 |
| JFE Steel Corporation | 7527 |
7 |
| JP Steel Plantech Co. | 81 |
7 |
| SMS Group GmbH | 1197 |
7 |
| Air Products and Chemicals, Inc. | 1471 |
6 |
| Novelis Inc. | 779 |
5 |
| SMS Siemag Aktiengesellschaft | 486 |
5 |
| Harbisonwalker International, Inc. | 245 |
4 |
| Outotec (Finland) Oy | 455 |
4 |
| Tenova Goodfellow Inc. | 41 |
4 |
| Continuum Powders Corporation | 33 |
4 |
| Corning Incorporated | 10504 |
3 |
| Other owners | 131 |