- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F23N - Regulating or controlling combustion
- F23N 3/04 - Regulating air supply or draught by operation of single valves or dampers by temperature-sensitive elements
Patent holdings for IPC class F23N 3/04
Total number of patents in this class: 47
10-year publication summary
|
4
|
4
|
9
|
5
|
4
|
2
|
3
|
2
|
2
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Field Controls, LLC | 80 |
3 |
| Maxitrol Company | 36 |
3 |
| Microsystemfuel S.r.l. | 4 |
3 |
| Biomass Controls PBC | 9 |
3 |
| American Air Liquide, Inc. | 223 |
2 |
| Invensys Controls Australia Pty Ltd. | 5 |
2 |
| Miles Industries Ltd. | 37 |
2 |
| China Energy Investment Corporation Limited | 127 |
2 |
| Maxitrol GmbH & Co. KG | 35 |
2 |
| Toray Industries, Inc. | 6652 |
1 |
| BSH Hausgeräte GmbH | 5384 |
1 |
| Clearstak LLC | 3 |
1 |
| Electrolux Appliances Aktiebolag | 1216 |
1 |
| Equinix, Inc. | 294 |
1 |
| Fabricant de Poêles International Inc. | 24 |
1 |
| Kyungdong Navien Co., Ltd. | 566 |
1 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 3515 |
1 |
| Leggett of Edgecombe County, LLC | 1 |
1 |
| Marcakis, Emmanuel | 5 |
1 |
| Meints, Timothy C. | 1 |
1 |
| Other owners | 14 |