- 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 21/04 - Arrangements of indicators or alarms
Patent holdings for IPC class F27D 21/04
Total number of patents in this class: 80
10-year publication summary
|
3
|
5
|
13
|
11
|
5
|
7
|
6
|
1
|
6
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Excello Co., Ltd. | 12 |
4 |
| Illinois Tool Works Inc. | 11379 |
3 |
| Brava Home, Inc. | 52 |
3 |
| Holcim Technology Ltd. | 961 |
3 |
| Innovatherm Prof. Dr. Leisenberg GmbH & Co. KG | 31 |
3 |
| POSCO | 2204 |
3 |
| Siemens AG | 24575 |
2 |
| Honeywell International Inc. | 14009 |
2 |
| Advanced Micro-fabrication Equipment, Inc. China | 93 |
2 |
| ArcelorMittal | 2047 |
2 |
| Ivoclar Vivadent AG | 1061 |
2 |
| Linde Aktiengesellschaft | 1553 |
2 |
| Research Institute of Industrial Science & Technology | 447 |
2 |
| Safezone Safety Systems, LLC | 6 |
2 |
| SMS Siemag Aktiengesellschaft | 515 |
2 |
| Solios Carbone | 13 |
2 |
| Stovminder, LLC | 3 |
2 |
| Tata Steel Limited | 190 |
2 |
| Kokusai Electric Corporation | 1896 |
2 |
| Imertech SAS | 223 |
2 |
| Other owners | 33 |