- 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 1/00 - Passages or apertures for delivering primary air for combustion
Patent holdings for IPC class F23L 1/00
Total number of patents in this class: 143
10-year publication summary
16
|
12
|
8
|
10
|
13
|
17
|
11
|
14
|
12
|
0
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Lennox Industries Inc. | 1088 |
6 |
Taiheiyo Cement Corporation | 237 |
5 |
Kyungdong Navien Co., Ltd. | 566 |
4 |
Sango Co., Ltd. | 73 |
4 |
Whirlpool Corporation | 4238 |
3 |
Chugai Ro Co., Ltd. | 124 |
3 |
Mitsubishi Hitachi Power Systems, Ltd. | 999 |
3 |
Noritz Corporation | 255 |
3 |
Rheem Manufacturing Company | 861 |
3 |
Mitsubishi Heavy Industries, Ltd. | 8217 |
2 |
Ebara Corporation | 1951 |
2 |
ACL Manufacturing Inc. | 3 |
2 |
BSH Bosch und Siemens Hausgerate GmbH | 3236 |
2 |
C.I.B. Unigas S.p.A. | 19 |
2 |
Hino Motors, Ltd. | 370 |
2 |
Korea Institute of Industrial Technology | 994 |
2 |
Rinnai Corporation | 204 |
2 |
Truma Gerätetechnik GmbH & Co. KG | 283 |
2 |
Fire Chief Industries LLC | 6 |
2 |
SL-Technik GmbH | 23 |
2 |
Other owners | 87 |