Method and device for controlling the combustion in furnace systems
US-12553607-B2 · Feb 17, 2026 · US
Construction of valves or dampers for controlling air supply or draught
Construction of valves or dampers for controlling air supply or draught · Cooperative Patent Classification (CPC)
Engines, pumps, lighting, heating, and mechanical systems.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | F23L13/00 |
| Official title | Construction of valves or dampers for controlling air supply or draught |
| Display label | Construction of valves or dampers for controlling air supply or draught |
| Total patents | 26 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2017 | 4 |
| 2018 | 3 |
| 2019 | 3 |
| 2020 | 4 |
| 2021 | 2 |
| 2022 | 4 |
| 2023 | 2 |
| 2024 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Vent stack lids and associated systems and methods
US-11939526-B2 · Mar 26, 2024 · US
Velocity damper for a recovery boiler
US-11719433-B2 · Aug 8, 2023 · US
Gas burner with a pneumatic actuating injet
US-11592174-B2 · Feb 28, 2023 · US
Method and device for controlling the combustion in furnace systems
US-2022404017-A1 · Dec 22, 2022 · US
Vent stack lids and associated systems and methods
US-2022204858-A1 · Jun 30, 2022 · US
Velocity damper for a recovery boiler
US-2022065447-A1 · Mar 3, 2022 · US
Velocity damper for a recovery boiler
US-11226095-B2 · Jan 18, 2022 · US
Vent stack lids and associated systems and methods
US-11142699-B2 · Oct 12, 2021 · US
Process and apparatus for reducing pressure in a flue gas stream
US-11042170-B2 · Jun 22, 2021 · US
Velocity damper for a recovery boiler
US-2020240635-A1 · Jul 30, 2020 · US
Combustion system
US-10563863-B2 · Feb 18, 2020 · US
Gas burner with a pneumatic actuating injet
US-2020032999-A1 · Jan 30, 2020 · US
Process and apparatus for reducing pressure in a flue gas stream
US-2020033893-A1 · Jan 30, 2020 · US
Premixing apparatus
US-10495301-B2 · Dec 3, 2019 · US
Non-return valve for flue gas venting and damper assembly for use therein
US-10401027-B2 · Sep 3, 2019 · US
Method and burner using the curie effect for controlling reactant velocity for operation in pre-heated and non-pre-heated modes
US-10222061-B2 · Mar 5, 2019 · US
Non-Return Valve for Flue Gas Venting and Damper Assembly for Use Therein
US-2018283685-A1 · Oct 4, 2018 · US
Premixing Apparatus
US-2018231243-A1 · Aug 16, 2018 · US
Signal responsive well test burner
US-9857078-B2 · Jan 2, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F23L13/00?
- CPC F23L13/00 is the Cooperative Patent Classification code for “Construction of valves or dampers for controlling air supply or draught.”
- How many patents are filed under CPC F23L13/00 (Construction of valves or dampers for controlling air supply or draught)?
- Our database includes 26 publications tagged with this CPC code.
- Is patent activity under CPC F23L13/00 growing?
- Publication counts under this code: 2 in 2023 vs 1 in 2024 (latest complete years).