Membranes for gas separation
US-12023633-B2 · Jul 2, 2024 · US
Chemical modification
Chemical modification · 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 | B01D67/0093 |
| Official title | {Chemical modification} |
| Display label | Chemical modification |
| Total patents | 629 |
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 | 38 |
| 2016 | 55 |
| 2017 | 50 |
| 2018 | 64 |
| 2019 | 76 |
| 2020 | 87 |
| 2021 | 76 |
| 2022 | 53 |
| 2023 | 45 |
| 2024 | 48 |
| 2025 | 30 |
| 2026 | 7 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Melt processable poly(vinyl alcohol) blends and poly(vinyl alcohol) based membranes
US-9486746-B2 · Nov 8, 2016 · US
Semipermeable membrane and manufacturing method therefor
US-9486745-B2 · Nov 8, 2016 · US
Composite polyamide membrane having high acid content and low azo content
US-2016317980-A1 · Nov 3, 2016 · US
Filtration method using polyimide nanoweb with amidized surface and apparatus therefor
US-9475009-B2 · Oct 25, 2016 · US
Treatment of aqueous mixtures containing anionic surfactants using fouling resistant reverse osmosis membrane
US-2016303519-A1 · Oct 20, 2016 · US
Hydrophilically modified fluorinated membrane (v)
US-2016288060-A1 · Oct 6, 2016 · US
Nanofibrous materials for heavy metal adsorption
US-2016263554-A1 · Sep 15, 2016 · US
Method for purification of antibody using porous membrane having amino group and alkyl group both bound to graft chain immobilized on porous substrate
US-9441011-B2 · Sep 13, 2016 · US
Sulfated Cellulose Hydrate Membrane, Method for Producing Same, and Use of the Membrane as an Adsorption Membrane for a Virus Purification Process
US-2016257941-A1 · Sep 8, 2016 · US
Cellulose hydrate membrane, method for the production thereof, and use thereof
US-9433904-B2 · Sep 6, 2016 · US
Ligand-functionalized substrates with enhanced binding capacity
US-2016231208-A1 · Aug 11, 2016 · US
Removal of microorganisms from cell culture media
US-2016177252-A1 · Jun 23, 2016 · US
Hydrophobic or oleophobic microporous polymer membrane with structurally induced beading effect
US-9364796-B2 · Jun 14, 2016 · US
Multilayered charge-mosaic membrane and manufacturing method therefor
US-9346020-B2 · May 24, 2016 · US
Membrane and method of manufacturing the same
US-2016136586-A1 · May 19, 2016 · US
Method of fabricating surface body having superhydrophobicity and hydrophilicity
US-9340922-B2 · May 17, 2016 · US
Method for hydrophilizing hollow-fiber membrane module
US-9308478-B2 · Apr 12, 2016 · US
Filtration method
US-9272245-B2 · Mar 1, 2016 · US
Functionalized nonwoven article
US-9259689-B2 · Feb 16, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D67/0093?
- CPC B01D67/0093 is the Cooperative Patent Classification code for “Chemical modification.”
- How many patents are filed under CPC B01D67/0093 (Chemical modification)?
- Our database includes 629 publications tagged with this CPC code.
- Is patent activity under CPC B01D67/0093 growing?
- Publication counts under this code: 48 in 2024 vs 30 in 2025 (latest complete years).