- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F23L - Supplying air or non-combustible liquids or gases to combustion apparatus in general; valves or dampers specially adapted for controlling air supply or draught in combustion apparatus; inducing draught in combustion apparatus; tops for chimneys or ventilating shafts; terminals for flues
- F23L 3/00 - Arrangements of valves or dampers before the fire
Patent holdings for IPC class F23L 3/00
Total number of patents in this class: 55
10-year publication summary
5
|
5
|
6
|
9
|
4
|
9
|
9
|
6
|
4
|
2
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Biochar Now, LLC | 22 |
5 |
Flamekeeper, LLC | 5 |
3 |
Truma Gerätetechnik GmbH & Co. KG | 283 |
3 |
Field Controls, LLC | 80 |
2 |
John Zink Company, LLC | 144 |
2 |
Kyungdong Navien Co., Ltd. | 566 |
2 |
Rheem Manufacturing Company | 861 |
2 |
Birwelco USA Inc. | 4 |
2 |
SL-Technik GmbH | 23 |
2 |
A.J. Wells & Sons Limited | 3 |
2 |
Honeywell International Inc. | 13799 |
1 |
Air Products and Chemicals, Inc. | 1448 |
1 |
Alfred Kärcher GmbH & Co. KG | 398 |
1 |
Andritz Inc. | 344 |
1 |
Babcock-Hitachi Kabushiki Kaisha | 107 |
1 |
Bertelli & Partners S.r.l. | 28 |
1 |
Corky's Management Services Pty Ltd | 2 |
1 |
Doosan Lentjes GmbH | 48 |
1 |
EE Emission Engineering GmbH | 1 |
1 |
General Electric Technology GmbH | 1657 |
1 |
Other owners | 20 |