- 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 9/04 - Passages or apertures for delivering secondary air for completing combustion of fuel by discharging the air beyond the fire, i.e. nearer the smoke outlet
Patent holdings for IPC class F23L 9/04
Total number of patents in this class: 35
10-year publication summary
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0
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1
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3
|
1
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4
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1
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1
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0
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2
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0
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| General Electric Company | 13915 |
2 |
| General Electric Technology GmbH | 1336 |
2 |
| Martin GmbH fur Umwelt-und Energietechnik | 50 |
2 |
| Stuv S.A. | 21 |
2 |
| Alstom Technology Ltd | 1036 |
1 |
| Siemens Energy, Inc. | 1686 |
1 |
| Andritz Technology and Asset Management GmbH | 78 |
1 |
| Charlton & Jenrick Limited | 6 |
1 |
| Doosan Babcock Limited | 30 |
1 |
| Fortum Oyj | 86 |
1 |
| Grace, Lance Carl | 1 |
1 |
| Grace, Tyler Mainord | 1 |
1 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 4122 |
1 |
| Linde Aktiengesellschaft | 1419 |
1 |
| Metawater Co., Ltd. | 200 |
1 |
| Outotec (Finland) Oy | 455 |
1 |
| Power Systems Synectics Limited | 2 |
1 |
| Stork Thermeq B.V. | 8 |
1 |
| Tata Steel Nederland Technology BV | 163 |
1 |
| ThyssenKrupp Industrial Solutions AG | 630 |
1 |
| Other owners | 11 |