Avoiding of emissions in the production of artificial pozzolans made of mineral material, in particular clays
US-2026097990-A1 · Apr 9, 2026 · US
Preheating without addition of fuel
Preheating without addition of fuel · 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 | C04B7/432 |
| Official title | {Preheating without addition of fuel} |
| Display label | Preheating without addition of fuel |
| Total patents | 29 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 2 |
| 2017 | 2 |
| 2018 | 2 |
| 2019 | 1 |
| 2021 | 1 |
| 2023 | 4 |
| 2024 | 6 |
| 2025 | 4 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method of calcining a raw material to obtain a cementitious material
US-2026015286-A1 · Jan 15, 2026 · US
Method of producing sulfur concrete using carbonated salts
US-12522540-B2 · Jan 13, 2026 · US
Cement clinker production system and cement clinker production method
US-12515985-B2 · Jan 6, 2026 · US
Method of producing sulfur concrete using carbonated salts
US-2025320161-A1 · Oct 16, 2025 · US
Rotary kiln and method for burning carbonate-containing material, in particular limestone or dolomite
US-12405060-B2 · Sep 2, 2025 · US
Method of processing exhaust gas from a cement plant
US-2025263336-A1 · Aug 21, 2025 · US
Cement manufacturing plant and method of operating a cement manufacturing plant
US-2025026683-A1 · Jan 23, 2025 · US
Method of heating solids in a reactor to produce a heat-treated material
US-2024376000-A1 · Nov 14, 2024 · US
Rotary Kiln and Method for Burning Carbonate-Containing Material, In Particular Limestone or Dolomite
US-2024151468-A1 · May 9, 2024 · US
Method of producing a synthetic carbonated mineral component in a cement manufacturing plant
US-2024092691-A1 · Mar 21, 2024 · US
Oxyfuel clinker production with special oxygen addition
US-11878950-B2 · Jan 23, 2024 · US
Method of calcining a raw material to obtain a cementitious material
US-2024018039-A1 · Jan 18, 2024 · US
Method of producing clinker from cement raw meal
US-2024002288-A1 · Jan 4, 2024 · US
Cement clinker production system and cement clinker production method
US-2023365464-A1 · Nov 16, 2023 · US
Cement-manufacturing plant and process for producing cement clinker
US-2023152037-A1 · May 18, 2023 · US
Method for the production of cement clinker
US-2023145917-A1 · May 11, 2023 · US
Method of producing cement clinker and a second calcined material
US-2023002277-A1 · Jan 5, 2023 · US
Oxyfuel clinker production with special oxygen addition
US-2021198142-A1 · Jul 1, 2021 · US
Process and device for cement clinker production
US-2019039949-A1 · Feb 7, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C04B7/432?
- CPC C04B7/432 is the Cooperative Patent Classification code for “Preheating without addition of fuel.”
- How many patents are filed under CPC C04B7/432 (Preheating without addition of fuel)?
- Our database includes 29 publications tagged with this CPC code.
- Is patent activity under CPC C04B7/432 growing?
- Publication counts under this code: 6 in 2024 vs 4 in 2025 (latest complete years).