- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F23N - Regulating or controlling combustion
- F23N 3/06 - Regulating air supply or draught by conjoint operation of two or more valves or dampers
Patent holdings for IPC class F23N 3/06
Total number of patents in this class: 26
10-year publication summary
|
3
|
2
|
2
|
0
|
1
|
5
|
3
|
2
|
2
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kyungdong Navien Co., Ltd. | 566 |
4 |
| Coprecitec, S.L. | 44 |
2 |
| Honeywell International Inc. | 13799 |
1 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
1 |
| Air Products and Chemicals, Inc. | 1448 |
1 |
| Ammann Italy S.p.A. | 7 |
1 |
| Babcock-Hitachi Kabushiki Kaisha | 107 |
1 |
| Bertelli & Partners S.r.l. | 28 |
1 |
| Ceské Vysoké Ucení Technické V Praze | 57 |
1 |
| C.I.B. Unigas S.p.A. | 19 |
1 |
| Covanta Energy, LLC | 14 |
1 |
| Enervex, Inc. | 3 |
1 |
| Hertwich Engineering GmbH | 13 |
1 |
| IHI Corporation | 3268 |
1 |
| IHS Innovation ApS | 1 |
1 |
| Rheem Manufacturing Company | 861 |
1 |
| Hwam A/S | 3 |
1 |
| ATech elektronika d.o.o. | 8 |
1 |
| DP Cleantech (Hong Kong) Limited | 4 |
1 |
| Xi'an Thermal Power Research Institute Co., Ltd. | 244 |
1 |
| Other owners | 2 |