- 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: 78
10-year publication summary
8
|
3
|
5
|
13
|
11
|
5
|
7
|
6
|
1
|
2
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Excello Co., Ltd. | 11 |
4 |
Brava Home, Inc. | 50 |
3 |
Holcim Technology Ltd. | 868 |
3 |
Innovatherm Prof. Dr. Leisenberg GmbH & Co. KG | 29 |
3 |
POSCO | 2222 |
3 |
Siemens AG | 24990 |
2 |
Honeywell International Inc. | 13799 |
2 |
Advanced Micro-fabrication Equipment, Inc. China | 88 |
2 |
ArcelorMittal | 1887 |
2 |
Ivoclar Vivadent AG | 1060 |
2 |
Linde Aktiengesellschaft | 1600 |
2 |
Research Institute of Industrial Science & Technology | 378 |
2 |
Safezone Safety Systems, LLC | 6 |
2 |
SMS Siemag Aktiengesellschaft | 529 |
2 |
Solios Carbone | 13 |
2 |
Stovminder, LLC | 3 |
2 |
Tata Steel Limited | 184 |
2 |
Imertech SAS | 224 |
2 |
Illinois Tool Works Inc. | 11152 |
1 |
Toyota Motor Corporation | 28582 |
1 |
Other owners | 34 |