Core wall-thinning design method for prestressed high-performance concrete cylinder pipe
US-2026022072-A1 · Jan 22, 2026 · US
Steam hardening, e.g. in an autoclave
Steam hardening, e.g. in an autoclave · 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 | C04B40/024 |
| Official title | {Steam hardening, e.g. in an autoclave} |
| Display label | Steam hardening, e.g. in an autoclave |
| Total patents | 41 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 4 |
| 2017 | 4 |
| 2018 | 3 |
| 2019 | 4 |
| 2020 | 6 |
| 2021 | 6 |
| 2022 | 4 |
| 2023 | 2 |
| 2024 | 1 |
| 2025 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Fire resistant composite rebar for concrete structures
US-2025296880-A1 · Sep 25, 2025 · US
Early-strength and quick-setting ultra-high performance concrete (uhpc), and preparation method and use thereof
US-2025051235-A1 · Feb 13, 2025 · US
System and method for steam curing and carbonation curing precast concrete
US-2024254059-A1 · Aug 1, 2024 · US
Composition containing a semi-ordered calcium silicate hydrate
US-11667569-B2 · Jun 6, 2023 · US
Sound-absorbing material particle and preparation method thereof
US-11661348-B2 · May 30, 2023 · US
Method and apparatus for curing CO2 composite material objects at near ambient temperature and pressure
US-11517874-B2 · Dec 6, 2022 · US
Autoclaved cement compositions
US-2022220035-A1 · Jul 14, 2022 · US
Artificial nacre material with layered structure and preparation method thereof
US-11267721-B2 · Mar 8, 2022 · US
Systems and processes for accelerated carbonation curing of pre-cast cementitious structures
US-11254028-B2 · Feb 22, 2022 · US
Artificial nacre material with layered structure and preparation method thereof
US-2021340019-A1 · Nov 4, 2021 · US
Non-fired monoliths
US-11111179-B2 · Sep 7, 2021 · US
Non-fired monoliths
US-2021198144-A1 · Jul 1, 2021 · US
Curing Cementitious Products
US-2021114943-A1 · Apr 22, 2021 · US
Method for the manufacture of calcium silicate hydrate used as hardening accelerator in concrete and cement-based materials, calcium silicate hydrate manufactured with said method
US-10968108-B2 · Apr 6, 2021 · US
Foam
US-10947163-B2 · Mar 16, 2021 · US
Aerated composite materials, methods of production and uses thereof
US-10851022-B2 · Dec 1, 2020 · US
Systems and processes for accelerated carbonation curing of pre-cast cementitious structures
US-2020368937-A1 · Nov 26, 2020 · US
Dispersant composition for hydraulic compositions for centrifugal molding
US-10800702-B2 · Oct 13, 2020 · US
Method and apparatus for the curing of composite material by control over rate limiting steps in water removal
US-10781140-B2 · Sep 22, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C04B40/024?
- CPC C04B40/024 is the Cooperative Patent Classification code for “Steam hardening, e.g. in an autoclave.”
- How many patents are filed under CPC C04B40/024 (Steam hardening, e.g. in an autoclave)?
- Our database includes 41 publications tagged with this CPC code.
- Is patent activity under CPC C04B40/024 growing?
- Publication counts under this code: 1 in 2024 vs 2 in 2025 (latest complete years).