Highly dense red mud shields for x-ray and gamma-ray attenuation
US-2024018050-A1 · Jan 18, 2024 · US
Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite · 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 | C04B2235/349 |
| Official title | Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite |
| Display label | Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite |
| Total patents | 491 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 63 |
| 2016 | 61 |
| 2017 | 48 |
| 2018 | 46 |
| 2019 | 53 |
| 2020 | 44 |
| 2021 | 37 |
| 2022 | 48 |
| 2023 | 33 |
| 2024 | 30 |
| 2025 | 21 |
| 2026 | 7 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Pressure casting slip and refractory ceramic produced therefrom for gas turbine units
US-9221718-B2 · Dec 29, 2015 · US
Ceramic honeycomb structure and its production method
US-2015367335-A1 · Dec 24, 2015 · US
Ceramic honeycomb structure and its production method
US-2015360162-A1 · Dec 17, 2015 · US
Insulation material and method of manufacturing same
US-2015345690-A1 · Dec 3, 2015 · US
Percolated mullite and a method of forming same
US-2015344371-A1 · Dec 3, 2015 · US
Method of manufacturing honeycomb structure and honeycomb structure
US-9193125-B2 · Nov 24, 2015 · US
Cordierite aluminum magnesium titanate compositions and ceramic articles comprising same
US-2015321962-A1 · Nov 12, 2015 · US
Inorganic fibrous molded refractory article, method for producing inorganic fibrous molded refractory article, and inorganic fibrous unshaped refractory composition
US-9174875-B2 · Nov 3, 2015 · US
Honeycomb structure, manufacturing method thereof, and catalyst carrying honeycomb structure
US-9174880-B2 · Nov 3, 2015 · US
Ceramic precursor batch composition and method of increasing ceramic precursor batch extrusion rate
US-9174879-B2 · Nov 3, 2015 · US
Cement to make thermal shock resistant ceramic honeycomb structures and method to make them
US-9174158-B2 · Nov 3, 2015 · US
Porous mullite bodies having improved thermal stability
US-2015299045-A1 · Oct 22, 2015 · US
Disk roll and base material thereof
US-9162916-B2 · Oct 20, 2015 · US
Ceramic honeycomb structure skin coating
US-9163148-B2 · Oct 20, 2015 · US
Preparation of a solid based on zinc oxide for use in purifying a gas or a liquid
US-9156738-B2 · Oct 13, 2015 · US
Honeycomb structure
US-2015273436-A1 · Oct 1, 2015 · US
Honeycomb structure
US-2015273435-A1 · Oct 1, 2015 · US
Porous body, honeycomb filter, and method for producing porous body
US-2015278409-A1 · Oct 1, 2015 · US
Chromium oxide product
US-2015267133-A1 · Sep 24, 2015 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C04B2235/349?
- CPC C04B2235/349 is the Cooperative Patent Classification code for “Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite.”
- How many patents are filed under CPC C04B2235/349 (Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite)?
- Our database includes 491 publications tagged with this CPC code.
- Is patent activity under CPC C04B2235/349 growing?
- Publication counts under this code: 30 in 2024 vs 21 in 2025 (latest complete years).