- 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: 248
10-year publication summary
|
16
|
12
|
12
|
18
|
16
|
17
|
11
|
17
|
17
|
22
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Danieli Automation SpA | 123 |
16 |
| Danieli & C. Officine Meccaniche S.p.A. | 716 |
13 |
| Siemens AG | 24386 |
11 |
| Primetals Technologies Germany GmbH | 204 |
10 |
| Tenova S.p.A. | 156 |
10 |
| ArcelorMittal | 2324 |
9 |
| Hatch Ltd. | 216 |
9 |
| KW Associates LLC | 13 |
9 |
| JP Steel Plantech Co. | 83 |
7 |
| SMS Group GmbH | 1131 |
7 |
| ABB Schweiz AG | 7055 |
6 |
| JFE Steel Corporation | 6935 |
5 |
| SMS Siemag Aktiengesellschaft | 505 |
5 |
| Air Products and Chemicals, Inc. | 1445 |
4 |
| Harbisonwalker International, Inc. | 206 |
4 |
| Novelis Inc. | 759 |
4 |
| Outotec (Finland) Oy | 477 |
4 |
| Corning Incorporated | 10314 |
3 |
| GrafTech International Holdings Inc. | 112 |
3 |
| Pan Pacific Copper Co., Ltd. | 31 |
3 |
| Other owners | 106 |