Hemocompatible adsorber for the dialysis of protein-bound uremic toxins
US-2018369783-A1 · Dec 27, 2018 · US
Coatings involving more than one layer of same or different nature
Coatings involving more than one layer of same or different nature · 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 | B01J20/3289 |
| Official title | {Coatings involving more than one layer of same or different nature} |
| Display label | Coatings involving more than one layer of same or different nature |
| Total patents | 152 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 18 |
| 2016 | 14 |
| 2017 | 17 |
| 2018 | 11 |
| 2019 | 18 |
| 2020 | 11 |
| 2021 | 13 |
| 2022 | 14 |
| 2023 | 7 |
| 2024 | 16 |
| 2025 | 12 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Carbon dioxide capture articles and methods of making same
US-2018361352-A1 · Dec 20, 2018 · US
Superficially porous materials comprising a substantially nonporous hybrid core having narrow particle size distribution
US-2018353934-A1 · Dec 13, 2018 · US
High purity chromatographic materials comprising an ionizable modifier
US-10150098-B2 · Dec 11, 2018 · US
Method of making surface-coated water-absorbing polymer particles in a microfluidic device
US-2018304233-A1 · Oct 25, 2018 · US
Superficially porous materials comprising a substantially nonporous hybrid core having narrow particle size distribution; process for the preparation thereof; and use thereof for chromatographic separations
US-10092893-B2 · Oct 9, 2018 · US
Extraction separation using magnetic beads
US-10040073-B2 · Aug 7, 2018 · US
Hygroscopic material, method of producing same, and packaging material
US-2018161722-A1 · Jun 14, 2018 · US
Method for manufacturing porous body
US-9962679-B2 · May 8, 2018 · US
Carbon dioxide sorbents for indoor air quality control
US-2018050322-A1 · Feb 22, 2018 · US
Metal oxide-based biocompatible hybrid sorbent for the extraction and enrichment of catecholamine neurotransmitters and related compounds, and method of synthesis
US-2018001298-A1 · Jan 4, 2018 · US
Method for producing a chromatography analysis column
US-9835599-B2 · Dec 5, 2017 · US
Chemically modified graphene
US-9822151-B2 · Nov 21, 2017 · US
Biological composite material loaded with magnetic nanoparticles with core-shell structure, the preparation therefore and the application
US-9809476-B2 · Nov 7, 2017 · US
Method for manufacturing porous body
US-2017312734-A1 · Nov 2, 2017 · US
Metal oxide particles with uniform multilayer polymer coatings
US-9796793-B2 · Oct 24, 2017 · US
Separation membrane structure
US-2017296980-A1 · Oct 19, 2017 · US
Superficially porous particles with dual pore structure and methods for making the same
US-2017282155-A1 · Oct 5, 2017 · US
Metal oxide coated diatomite aggregate and use thereof as adsorbent and fertilizer
US-2017259243-A1 · Sep 14, 2017 · US
Structured adsorbent beds, methods of producing the same and uses thereof
US-9744521-B2 · Aug 29, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01J20/3289?
- CPC B01J20/3289 is the Cooperative Patent Classification code for “Coatings involving more than one layer of same or different nature.”
- How many patents are filed under CPC B01J20/3289 (Coatings involving more than one layer of same or different nature)?
- Our database includes 152 publications tagged with this CPC code.
- Is patent activity under CPC B01J20/3289 growing?
- Publication counts under this code: 16 in 2024 vs 12 in 2025 (latest complete years).