- 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 9/00 - Passages or apertures for delivering secondary air for completing combustion of fuel
Patent holdings for IPC class F23L 9/00
Total number of patents in this class: 115
10-year publication summary
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9
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10
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8
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7
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8
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8
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5
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5
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3
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2
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| IHI Corporation | 3491 |
4 |
| Praxair Technology, Inc. | 1260 |
3 |
| Xi'an Thermal Power Research Institute Co., Ltd. | 405 |
3 |
| Whirlpool Corporation | 4508 |
2 |
| Andritz Inc. | 328 |
2 |
| Charlton & Jenrick Limited | 6 |
2 |
| Institute of Engineering Thermophysics, Chinese Academy of Sciences | 53 |
2 |
| Kyungdong Navien Co., Ltd. | 621 |
2 |
| Lochinvar, LLC | 113 |
2 |
| Yantai Longyuan Power Technology Co., Ltd. | 21 |
2 |
| Ecoflam Bruciatori S.p.A. | 11 |
2 |
| Joint Stock Company "rosenergoatom" | 88 |
2 |
| SL-Technik GmbH | 21 |
2 |
| Pure Methanol Energy Technology Co., Ltd. | 3 |
2 |
| Gartena Consulting & Installation AB | 2 |
2 |
| Mitsubishi Power, Ltd. | 1816 |
2 |
| Science and Innovations - Nuclear Industry Scientific Development, Private Enterprise | 81 |
2 |
| Wuhu Midea Smart Kitchen Appliance Manufacturing Co., Ltd. | 120 |
2 |
| Samsung Electronics Co., Ltd. | 150751 |
1 |
| Mitsubishi Heavy Industries, Ltd. | 8948 |
1 |
| Other owners | 73 |