- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F23L - Supplying air or non-combustible liquids or gases to combustion apparatus in generalvalves or dampers specially adapted for controlling air supply or draught in combustion apparatusinducing draught in combustion apparatustops for chimneys or ventilating shaftsterminals 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: 154
10-year publication summary
|
8
|
10
|
13
|
17
|
11
|
15
|
13
|
7
|
7
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Lennox Industries Inc. | 1086 |
6 |
| Rinnai Corporation | 280 |
5 |
| Taiheiyo Cement Corporation | 240 |
5 |
| Kyungdong Navien Co., Ltd. | 618 |
4 |
| Noritz Corporation | 288 |
4 |
| Sango Co., Ltd. | 73 |
4 |
| Whirlpool Corporation | 4569 |
3 |
| Chugai Ro Co., Ltd. | 128 |
3 |
| Mitsubishi Hitachi Power Systems, Ltd. | 991 |
3 |
| Rheem Manufacturing Company | 991 |
3 |
| Mitsubishi Heavy Industries, Ltd. | 9023 |
2 |
| Ebara Corporation | 2270 |
2 |
| ACL Manufacturing Inc. | 3 |
2 |
| BSH Bosch und Siemens Hausgerate GmbH | 2565 |
2 |
| C.I.B. Unigas S.p.A. | 21 |
2 |
| Hino Motors, Ltd. | 332 |
2 |
| Korea Institute of Industrial Technology | 1019 |
2 |
| Truma Gerätetechnik GmbH & Co. KG | 286 |
2 |
| Aprovecho Research Center | 5 |
2 |
| Fire Chief Industries LLC | 6 |
2 |
| Other owners | 94 |