Mixed matrix membranes with embedded polymeric particles and networks and related compositions, methods, and systems
US-10369529-B2 · Aug 6, 2019 · US
Polyamines
Polyamines · 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 | B01D71/60 |
| Official title | Polyamines |
| Display label | Polyamines |
| Total patents | 201 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 10 |
| 2016 | 18 |
| 2017 | 16 |
| 2018 | 13 |
| 2019 | 25 |
| 2020 | 19 |
| 2021 | 24 |
| 2022 | 25 |
| 2023 | 14 |
| 2024 | 16 |
| 2025 | 17 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Nanofiltration membranes and methods of use
US-10245559-B2 · Apr 2, 2019 · US
Mixed matrix membrane, a method of making thereof, and a method for gas separation
US-10188981-B2 · Jan 29, 2019 · US
A polyvinyl alcohol porous support and method
US-2018326360-A1 · Nov 15, 2018 · US
Highly selective alicyclic polyamide nanofiltration membrane and making method thereof
US-2018326362-A1 · Nov 15, 2018 · US
Polyamide-based water-treatment separation membrane having excellent durability, and manufacturing method therefor
US-10112154-B2 · Oct 30, 2018 · US
Mixed matrix membrane, a method of making thereof, and a method for gas separation
US-2018304193-A1 · Oct 25, 2018 · US
Polymers and membranes for separation of polar organic compounds from aqueous mixtures and methods of using
US-10086339-B2 · Oct 2, 2018 · US
Separation membrane for olefin separation and olefin separation method using the same
US-2018272274-A1 · Sep 27, 2018 · US
Filtration membranes and related compositions, methods and systems
US-10058822-B2 · Aug 28, 2018 · US
Composite Membrane and Method of Fabricating the Same
US-2018200680-A1 · Jul 19, 2018 · US
Gas Separation Membrane
US-2018169594-A1 · Jun 21, 2018 · US
Organic-inorganic composite, structural body, and method for producing organic-inorganic composite
US-9944767-B2 · Apr 17, 2018 · US
Solvent resistant thin film composite membrane and its preparation
US-9943809-B2 · Apr 17, 2018 · US
Layer-by-layer assembly of graphene oxide membranes via electrostatic interaction and eludication of water and solute transport mechanisms
US-9902141-B2 · Feb 27, 2018 · US
Chlorine resistant polyelectrolyte multilayer membranes for desalination
US-2018036687-A1 · Feb 8, 2018 · US
Polyimide composition and preparation method of separation membrane
US-2017291146-A1 · Oct 12, 2017 · US
Dialysis membrane and method for its production
US-2017232405-A1 · Aug 17, 2017 · US
Method for producing hollow fiber carbon membrane
US-9731250-B2 · Aug 15, 2017 · US
Chemical additives for water flux enhancement
US-9724651-B2 · Aug 8, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D71/60?
- CPC B01D71/60 is the Cooperative Patent Classification code for “Polyamines.”
- How many patents are filed under CPC B01D71/60 (Polyamines)?
- Our database includes 201 publications tagged with this CPC code.
- Is patent activity under CPC B01D71/60 growing?
- Publication counts under this code: 16 in 2024 vs 17 in 2025 (latest complete years).