Organic binder for tiling adhesive
US-2026022069-A1 · Jan 22, 2026 · US
Hollow or porous granular materials
Hollow or porous granular materials · 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 | C04B20/002 |
| Official title | {Hollow or porous granular materials} |
| Display label | Hollow or porous granular materials |
| Total patents | 58 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 2 |
| 2017 | 8 |
| 2018 | 3 |
| 2019 | 6 |
| 2020 | 6 |
| 2021 | 4 |
| 2022 | 4 |
| 2023 | 9 |
| 2024 | 6 |
| 2025 | 5 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Efficient sound-absorbing lightweight aggregate cellular concrete, method for preparing the same, and application thereof
US-12384721-B1 · Aug 12, 2025 · US
Lightweight aggregates produced from waste-coal combustion ash
US-12351514-B2 · Jul 8, 2025 · US
Shaped artificial polymer articles
US-12286380-B2 · Apr 29, 2025 · US
Bitumen product
US-12258461-B2 · Mar 25, 2025 · US
Crack-resistant ultra-high performance concrete for underground engineering in water-rich strata, preparation method, and application thereof
US-12252444-B1 · Mar 18, 2025 · US
Fluid storage media and method of delivering a fluid
US-12090461-B2 · Sep 17, 2024 · US
Granules
US-2024294428-A9 · Sep 5, 2024 · US
Coated hollow and evacuated insulation spheres (CEIS)
US-12005414-B2 · Jun 11, 2024 · US
Downhole fluids and methods of use thereof
US-11898085-B2 · Feb 13, 2024 · US
Construction products with an acoustically transparent coating
US-11885129-B2 · Jan 30, 2024 · US
Granules
US-2024018042-A1 · Jan 18, 2024 · US
Granules
US-11802081-B2 · Oct 31, 2023 · US
Composition containing a semi-ordered calcium silicate hydrate
US-11667569-B2 · Jun 6, 2023 · US
Methods of Making and Using a Cementitious Composition with Ultra-Low Portland Cement
US-2023138857-A1 · May 4, 2023 · US
Lightweight Aggregates Produced from Waste-Coal Combustion Ash
US-2023110778-A1 · Apr 13, 2023 · US
Granules
US-11597681-B2 · Mar 7, 2023 · US
Inorganic fiber molded body, heating furnace, structure, and method for manufacturing inorganic fiber molded body
US-2023043653-A1 · Feb 9, 2023 · US
Curable compositions comprising multistage polymers
US-2023020653-A1 · Jan 19, 2023 · US
Textile-reinforced cement composite for suppressing occurrence of slipping and crack and method of manufacturing the same
US-11542197-B2 · Jan 3, 2023 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C04B20/002?
- CPC C04B20/002 is the Cooperative Patent Classification code for “Hollow or porous granular materials.”
- How many patents are filed under CPC C04B20/002 (Hollow or porous granular materials)?
- Our database includes 58 publications tagged with this CPC code.
- Is patent activity under CPC C04B20/002 growing?
- Publication counts under this code: 6 in 2024 vs 5 in 2025 (latest complete years).