Hybrid electric and fired heater for olefin production
US-2026071128-A1 · Mar 12, 2026 · US
using intermediate heat-transfer fluids
using intermediate heat-transfer fluids · 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 | F23L15/045 |
| Official title | {using intermediate heat-transfer fluids} |
| Display label | using intermediate heat-transfer fluids |
| Total patents | 27 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 2 |
| 2017 | 1 |
| 2019 | 9 |
| 2020 | 2 |
| 2021 | 2 |
| 2022 | 4 |
| 2024 | 2 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Glass manufacturing apparatus and glass manufacturing method
US-2025282665-A1 · Sep 11, 2025 · US
Flame control in an oxyfuel combustion process
US-12173655-B2 · Dec 24, 2024 · US
Furnace operation method
US-2024025787-A1 · Jan 25, 2024 · US
Flame control in an oxyfuel combustion process
US-2022275759-A1 · Sep 1, 2022 · US
Method for operating a batch furnace comprising the preheating of a fluid upstream of the furnace
US-11378338-B2 · Jul 5, 2022 · US
Furnace with integrated heat recovery utilizing radiative recuperator for preheating combustion reactants using heat from flue gas
US-11280491-B2 · Mar 22, 2022 · US
Carbon fiber production method
US-11261545-B2 · Mar 1, 2022 · US
Heat exchanger, radiant tube type heating device, and method of manufacturing heat exchanger
US-11209225-B2 · Dec 28, 2021 · US
Carbon fiber production method
US-2021054540-A1 · Feb 25, 2021 · US
Method for preheating a fluid upstream of a furnace
US-10788208-B2 · Sep 29, 2020 · US
Reduction of regenerator clogging
US-10712092-B2 · Jul 14, 2020 · US
Method for preheating a fluid upstream of a furnace
US-2019390856-A1 · Dec 26, 2019 · 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
Method for operation a batch furnace comprising the preheating of a fluid upstream of the furnace
US-2019331423-A1 · Oct 31, 2019 · US
Heat exchanger, radiant tube type heating device, and method of manufacturing heat exchanger
US-2019219346-A1 · Jul 18, 2019 · US
System for combined flue gas heat recovery and dust precipitation improvement as retrofit solution for existing coal-fired power stations
US-10253973-B2 · Apr 9, 2019 · US
Combustion method and installation with optimized energy recuperation
US-10208952-B2 · Feb 19, 2019 · US
Oxy boiler power plant oxygen feed system heat integration
US-10203112-B2 · Feb 12, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F23L15/045?
- CPC F23L15/045 is the Cooperative Patent Classification code for “using intermediate heat-transfer fluids.”
- How many patents are filed under CPC F23L15/045 (using intermediate heat-transfer fluids)?
- Our database includes 27 publications tagged with this CPC code.
- Is patent activity under CPC F23L15/045 growing?
- Publication counts under this code: 2 in 2024 vs 1 in 2025 (latest complete years).