Gas furnace
US-2020393125-A1 · Dec 17, 2020 · US
for use in particular heating operations
for use in particular heating operations · 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 | F23D99/004 |
| Official title | {for use in particular heating operations} |
| Display label | for use in particular heating operations |
| Total patents | 102 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 13 |
| 2016 | 11 |
| 2017 | 13 |
| 2018 | 12 |
| 2019 | 5 |
| 2020 | 9 |
| 2021 | 8 |
| 2022 | 11 |
| 2023 | 4 |
| 2024 | 6 |
| 2025 | 8 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Heating furnace using gas pulse modulation temperature control mode
US-10782033-B2 · Sep 22, 2020 · US
Burner assembly and method for combustion of gaseous or liquid fuel
US-10684010-B2 · Jun 16, 2020 · US
Furnace
US-2020103107-A1 · Apr 2, 2020 · US
Infrared radiator and method of assembling same
US-2020096193-A1 · Mar 26, 2020 · US
Burners for conversion of methane to olefins, aromatics, and nanoparticles
US-2020049346-A1 · Feb 13, 2020 · US
Furnace with integrated heat recovery utilizing radiative recuperator for preheating combustion reactants using heat from flue gas
US-2019368728-A1 · Dec 5, 2019 · US
Furnace with integrated heat recovery utilizing radiative recuperator for preheating combustion reactants using heat from flue gas
US-10465904-B2 · Nov 5, 2019 · US
Auxiliary burner for electric furnace
US-2019264914-A1 · Aug 29, 2019 · US
Burner
US-10316715-B2 · Jun 11, 2019 · US
Furnace with integrated heat recovery utilizing radiative recuperator for preheating combustion reactants using heat from flue gas
US-2019003706-A1 · Jan 3, 2019 · US
Submerged combustion burners and melters, and methods of use
US-10138151-B2 · Nov 27, 2018 · US
Scalable multiple-inverse diffusion flame burner for synthesis and processing of carbon-based and other nanostructured materials and films and fuels
US-10099928-B2 · Oct 16, 2018 · US
Burner
US-10082289-B2 · Sep 25, 2018 · US
Burner for the gasification of a solid fuel
US-10066832-B2 · Sep 4, 2018 · US
Isolation chamber for removable startup burner
US-10047957-B2 · Aug 14, 2018 · US
Multi-flame burner and method for heating a workpiece
US-10041671-B2 · Aug 7, 2018 · US
Aimable well test burner system
US-10001275-B2 · Jun 19, 2018 · US
Heat Gun with Self-Cooling System
US-2018142920-A1 · May 24, 2018 · US
Heating furnace using energy saving mode
US-9964313-B2 · May 8, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F23D99/004?
- CPC F23D99/004 is the Cooperative Patent Classification code for “for use in particular heating operations.”
- How many patents are filed under CPC F23D99/004 (for use in particular heating operations)?
- Our database includes 102 publications tagged with this CPC code.
- Is patent activity under CPC F23D99/004 growing?
- Publication counts under this code: 6 in 2024 vs 8 in 2025 (latest complete years).