- 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 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: 59
10-year publication summary
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4
|
7
|
4
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7
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7
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6
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5
|
4
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2
|
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
|
|---|---|---|
| Biochar Now, LLC | 22 |
5 |
| Honeywell International Inc. | 12796 |
3 |
| Flamekeeper, LLC | 5 |
3 |
| Andritz Oy | 289 |
2 |
| Field Controls, LLC | 75 |
2 |
| John Zink Company, LLC | 136 |
2 |
| Kyungdong Navien Co., Ltd. | 619 |
2 |
| Rheem Manufacturing Company | 991 |
2 |
| Truma Gerätetechnik GmbH & Co. KG | 285 |
2 |
| Birwelco USA Inc. | 4 |
2 |
| SL-Technik GmbH | 17 |
2 |
| A.J. Wells & Sons Limited | 3 |
2 |
| Mitsubishi Heavy Industries, Ltd. | 9016 |
1 |
| Air Products and Chemicals, Inc. | 1462 |
1 |
| Alfred Kärcher GmbH & Co. KG | 356 |
1 |
| Andritz Inc. | 326 |
1 |
| Bertelli & Partners S.r.l. | 28 |
1 |
| Camus Hydronics Limited | 28 |
1 |
| Corky's Management Services Pty Ltd | 2 |
1 |
| Doosan Lentjes GmbH | 49 |
1 |
| Other owners | 22 |