- 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 9/02 - Passages or apertures for delivering secondary air for completing combustion of fuel by discharging the air above the fire
Patent holdings for IPC class F23L 9/02
Total number of patents in this class: 102
10-year publication summary
|
6
|
4
|
11
|
7
|
9
|
9
|
1
|
6
|
4
|
4
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Babcock-Hitachi Kabushiki Kaisha | 103 |
6 |
| Mitsubishi Hitachi Power Systems, Ltd. | 993 |
5 |
| Fire Chief Industries LLC | 7 |
5 |
| Mitsubishi Heavy Industries, Ltd. | 8616 |
4 |
| Ecomb AB | 11 |
4 |
| General Electric Technology GmbH | 1492 |
3 |
| IHI Corporation | 3402 |
3 |
| Lamplight Farms Incorporated | 111 |
3 |
| Linka Maskinfabrik A/S | 3 |
3 |
| Blucomb S.r.l. | 4 |
3 |
| Mitsubishi Power, Ltd. | 1757 |
3 |
| Npi-engineering Oy | 8 |
3 |
| Kawasaki Heavy Industries, Limited | 1615 |
2 |
| Doosan Lentjes GmbH | 47 |
2 |
| Electric Power Development Co., Ltd. | 74 |
2 |
| Fortum Oyj | 96 |
2 |
| Stuv S.A. | 18 |
2 |
| Webasto SE | 1143 |
2 |
| SL-Technik GmbH | 22 |
2 |
| Panasonic Corporation | 20188 |
1 |
| Other owners | 42 |