Avoiding of emissions in the production of artificial pozzolans made of mineral material, in particular clays
US-2026097990-A1 · Apr 9, 2026 · US
for preheating solid materials
for preheating solid materials · 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 | F27D17/18 |
| Official title | for preheating solid materials |
| Display label | for preheating solid materials |
| Total patents | 43 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 5 |
| 2017 | 6 |
| 2018 | 6 |
| 2019 | 3 |
| 2020 | 4 |
| 2022 | 2 |
| 2024 | 3 |
| 2025 | 5 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Jet-type direct-fired preheating system
US-2026085374-A1 · Mar 26, 2026 · US
Method of calcining a raw material to obtain a cementitious material
US-2026015286-A1 · Jan 15, 2026 · US
Furnaces for melting particulate materials
US-2026002735-A1 · Jan 1, 2026 · US
Melting method using multiple impacting flames
US-2025362081-A1 · Nov 27, 2025 · US
Furnace system
US-2025327573-A1 · Oct 23, 2025 · US
Calcination apparatus and processes with improved co2 capture
US-2025313508-A1 · Oct 9, 2025 · US
Apparatus and method for manufacturing a product
US-2025297807-A1 · Sep 25, 2025 · US
Method of producing molten iron
US-2025003684-A1 · Jan 2, 2025 · US
Method and device for producing cement clinker
US-2024308905-A1 · Sep 19, 2024 · US
Method for producing molten iron using electric furnace provided with video device
US-2024093320-A1 · Mar 21, 2024 · US
Apparatus and method for feeding and preheating a metal charge in a melting furnace
US-11867462-B2 · Jan 9, 2024 · US
Furnace
US-11530815-B2 · Dec 20, 2022 · US
Apparatus and method for feeding and preheating a metal charge in a melting furnace
US-2022099373-A1 · Mar 31, 2022 · US
Reduction of regenerator clogging
US-10712092-B2 · Jul 14, 2020 · US
Method and arrangement for burning lime mud
US-10676395-B2 · Jun 9, 2020 · US
Furnace
US-2020103107-A1 · Apr 2, 2020 · US
Furnace
US-10551059-B2 · Feb 4, 2020 · US
Coal slurry preheater and coal gasification system and method using the same
US-10502489-B2 · Dec 10, 2019 · US
Molten iron manufacturing apparatus and molten iron manufacturing method
US-10422582-B2 · Sep 24, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F27D17/18?
- CPC F27D17/18 is the Cooperative Patent Classification code for “for preheating solid materials.”
- How many patents are filed under CPC F27D17/18 (for preheating solid materials)?
- Our database includes 43 publications tagged with this CPC code.
- Is patent activity under CPC F27D17/18 growing?
- Publication counts under this code: 3 in 2024 vs 5 in 2025 (latest complete years).