Clumping deodorizer comprising an activated carbon core
US-2019150395-A1 · May 23, 2019 · US
Inorganic material layers
Inorganic material layers · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B01J20/3234 |
| Official title | {Inorganic material layers} |
| Display label | Inorganic material layers |
| Total patents | 171 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 18 |
| 2016 | 12 |
| 2017 | 11 |
| 2018 | 18 |
| 2019 | 13 |
| 2020 | 13 |
| 2021 | 20 |
| 2022 | 9 |
| 2023 | 23 |
| 2024 | 22 |
| 2025 | 9 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Getter, MEMS device and method of forming the same
US-10155214-B2 · Dec 18, 2018 · US
Chromatographic materials for the separation of unsaturated molecules
US-2018345248-A1 · Dec 6, 2018 · US
Chromatographic materials
US-2018326399-A1 · Nov 15, 2018 · US
Method for preparing super absorbent polymer, and super absorbent polymer
US-2018318793-A1 · Nov 8, 2018 · US
Egg-shell type hybrid structure of highly dispersed nanoparticle-metal oxide support, preparation method thereof, and use thereof
US-10112172-B2 · Oct 30, 2018 · US
Method of making surface-coated water-absorbing polymer particles in a microfluidic device
US-2018304233-A1 · Oct 25, 2018 · US
Non-extruded activated carbon honeycomb structures
US-2018290096-A1 · Oct 11, 2018 · US
Chromatographic materials for the separation of unsaturated molecules
US-10092894-B2 · Oct 9, 2018 · US
Hydrophobic sorbents for co2/h2o displacement desorption applications
US-2018250653-A1 · Sep 6, 2018 · US
Adsorption device for compressed gas
US-2018243686-A1 · Aug 30, 2018 · US
Non-extruded activated carbon honeycomb structures
US-10046264-B2 · Aug 14, 2018 · US
Method for producing an adsorption agent for treating compressed gas and an adsorption device provided with such an adsorption agent
US-2018214850-A1 · Aug 2, 2018 · US
Fabrication of hierarchical silica nanomembranes and uses thereof for solid phase extraction of nucleic acids
US-10023859-B2 · Jul 17, 2018 · US
Method for producing metal oxide compositions and coated substrates
US-10016744-B2 · Jul 10, 2018 · US
Polymeric amine based carbon dioxide adsorbents
US-10010861-B2 · Jul 3, 2018 · US
Sorbent systems and methods
US-2018126358-A1 · May 10, 2018 · US
Chromatographic materials
US-9925521-B2 · Mar 27, 2018 · US
Polymeric amine based carbon dioxide adsorbents
US-2018008958-A1 · Jan 11, 2018 · US
Composite absorbent particles
US-2017339914-A1 · Nov 30, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01J20/3234?
- CPC B01J20/3234 is the Cooperative Patent Classification code for “Inorganic material layers.”
- How many patents are filed under CPC B01J20/3234 (Inorganic material layers)?
- Our database includes 171 publications tagged with this CPC code.
- Is patent activity under CPC B01J20/3234 growing?
- Publication counts under this code: 22 in 2024 vs 9 in 2025 (latest complete years).