External combustion air preheat
US-12553669-B2 · Feb 17, 2026 · US
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by indirect contact with preheated fluid other than hot combustion gases
by indirect contact with preheated fluid other than hot combustion gases · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C10G9/40 |
| Official title | by indirect contact with preheated fluid other than hot combustion gases |
| Display label | by indirect contact with preheated fluid other than hot combustion gases |
| Total patents | 21 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2016 | 1 |
| 2017 | 3 |
| 2018 | 1 |
| 2019 | 1 |
| 2022 | 2 |
| 2023 | 2 |
| 2024 | 5 |
| 2025 | 3 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Fuel endothermic reaction to cool a load
US-12545841-B2 · Feb 10, 2026 · US
Fluid Heating Device
US-2026016190-A1 · Jan 15, 2026 · US
Fluid Heating Device
US-2025287470-A1 · Sep 11, 2025 · US
Fuel Endothermic Reaction to Cool a Load
US-2025223504-A1 · Jul 10, 2025 · US
Thermal cracking of crudes to chemicals with heat transfer fluids
US-2025066677-A1 · Feb 27, 2025 · US
Heat integration with aqueous heat transfer medium for chemical recycling facilities
US-2024424540-A1 · Dec 26, 2024 · US
Chemical recycling facility and process with enhanced integration
US-2024368474-A1 · Nov 7, 2024 · US
Olefins production process
US-2024279558-A1 · Aug 22, 2024 · US
Integrated indirect heat transfer process for the production of syngas and olefins by catalytic partial oxidation and cracking
US-11932537-B2 · Mar 19, 2024 · US
Fuel endothermic reaction to cool a load
US-11912946-B2 · Feb 27, 2024 · US
Chemical reaction and conversion in thermally heterogeneous and non-steady-state chemical reactors
US-2023340336-A1 · Oct 26, 2023 · US
External combustion air preheat
US-2023324123-A1 · Oct 12, 2023 · US
Fuel Endothermic Reaction to Cool a Load
US-2022306943-A1 · Sep 29, 2022 · US
An integrated indirect heat transfer process for the production of syngas and olefins by catalytic partial oxidation and cracking
US-2022144632-A1 · May 12, 2022 · US
Process for the treatment of a composition comprising thermoplastics
US-10472486-B2 · Nov 12, 2019 · US
A process for the treatment of a composition comprising thermoplastics
US-2018208736-A1 · Jul 26, 2018 · US
Process for heavy oil upgrading in a double-wall reactor
US-9670419-B2 · Jun 6, 2017 · US
Process for heavy oil upgrading in a double-wall reactor
US-2017114286-A1 · Apr 27, 2017 · US
Process for heavy oil upgrading in a double-wall reactor
US-9567530-B2 · Feb 14, 2017 · US