Fuel enrichment system for fuel-fired appliance
US-10876744-B2 · Dec 29, 2020 · US
using fans
using fans · 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 | F23L17/005 |
| Official title | {using fans} |
| Display label | using fans |
| Total patents | 99 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 8 |
| 2016 | 11 |
| 2017 | 8 |
| 2018 | 13 |
| 2019 | 13 |
| 2020 | 9 |
| 2021 | 6 |
| 2022 | 14 |
| 2023 | 9 |
| 2024 | 5 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
BURNER BOX LINER FOR LOW NOx EMISSION FURNACE
US-2020340666-A1 · Oct 29, 2020 · US
Heat source device
US-2020309412-A1 · Oct 1, 2020 · US
Blower assembly for gas-burning appliance
US-2020284429-A1 · Sep 10, 2020 · US
Cover assembly, blower assembly and associated method
US-10711795-B2 · Jul 14, 2020 · US
Nozzle assembly for exhaust fan unit of hvac system
US-2020088426-A1 · Mar 19, 2020 · US
Reverse combustion type combustion apparatus
US-10571152-B2 · Feb 25, 2020 · US
Power generation system
US-10516176-B2 · Dec 24, 2019 · US
Water Heater Blower Assembly Having a Low Exhaust Port
US-2019353400-A1 · Nov 21, 2019 · US
Fan and water heater provided with the same, and impeller and water heater provided with the same
US-10473359-B2 · Nov 12, 2019 · US
Fan and water heater provided with the same, and impeller and water heater provided with the same
US-10473360-B2 · Nov 12, 2019 · US
Water heater blower assembly having a low exhaust port
US-10443891-B2 · Oct 15, 2019 · US
Direct vent dilution air connection system
US-10408449-B2 · Sep 10, 2019 · US
Dual input water heater
US-2019242620-A1 · Aug 8, 2019 · US
Furnace inducer choke and a gas furnace employing the same
US-10337727-B2 · Jul 2, 2019 · US
Direct Vent Dilution Air Connection System
US-2019170351-A1 · Jun 6, 2019 · US
Draft Inducer Blower
US-2019154044-A1 · May 23, 2019 · US
Air/gas admittance device for a combustion appliance
US-10274195-B2 · Apr 30, 2019 · US
BURNER BOX LINER FOR LOW NOx EMISSION FURNACE
US-2019101282-A1 · Apr 4, 2019 · US
Furnace inducer choke and a gas furnace employing the same
US-2019017699-A1 · Jan 17, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F23L17/005?
- CPC F23L17/005 is the Cooperative Patent Classification code for “using fans.”
- How many patents are filed under CPC F23L17/005 (using fans)?
- Our database includes 99 publications tagged with this CPC code.
- Is patent activity under CPC F23L17/005 growing?
- Publication counts under this code: 5 in 2024 vs 3 in 2025 (latest complete years).