Reverse osmosis membrane and method of producing the same
US-2024307831-A1 · Sep 19, 2024 · US
by interfacial polymerisation
by interfacial polymerisation · 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 | B01D69/1251 |
| Official title | {by interfacial polymerisation} |
| Display label | by interfacial polymerisation |
| Total patents | 475 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 39 |
| 2016 | 34 |
| 2017 | 51 |
| 2018 | 39 |
| 2019 | 36 |
| 2020 | 40 |
| 2021 | 50 |
| 2022 | 26 |
| 2023 | 35 |
| 2024 | 67 |
| 2025 | 49 |
| 2026 | 9 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Preparation method of reverse osmosis composite membrane and reverse osmosis composite membrane prepared thereby
US-2024024827-A1 · Jan 25, 2024 · US
Membranes comprising graphene
US-2016354729-A1 · Dec 8, 2016 · US
Composite membrane with multi-layered active layer
US-9504967-B2 · Nov 29, 2016 · US
Method for producing composite semipermeable membrane
US-2016339396-A1 · Nov 24, 2016 · US
Composite polyamide membrane having high acid content and low azo content
US-2016317980-A1 · Nov 3, 2016 · US
Composite polyamide membrane having azo content and high acid content
US-2016310909-A1 · Oct 27, 2016 · US
Treatment of aqueous mixtures containing anionic surfactants using fouling resistant reverse osmosis membrane
US-2016303519-A1 · Oct 20, 2016 · US
Composite polyamide membrane treated with dihyroxyaryl compounds and nitrous acid
US-9452391-B1 · Sep 27, 2016 · US
Composite polyamide membrane post treated with nitrious acid
US-2016271567-A1 · Sep 22, 2016 · US
Thin film composite forward osmosis membranes with performance enhancing layers
US-2016236153-A1 · Aug 18, 2016 · US
High permeate flux reverse osmosis membrane including surface-treated zeolite and method of manufacturing the same
US-9415351-B2 · Aug 16, 2016 · US
Novel nano-patterned thin film membranes and thin film composite membranes, and methods using same
US-2016214069-A1 · Jul 28, 2016 · US
Composite polyamide membrane derived from an aliphatic acyclic tertiary amine compound
US-9387442-B2 · Jul 12, 2016 · US
Composite filtration membranes and methods of preparation thereof
US-9352286-B2 · May 31, 2016 · US
Thin film composite membranes embedded with molecular cage compounds
US-9333465-B2 · May 10, 2016 · US
Thin film composite hollow fiber membranes for osmotic power generation
US-2016121533-A1 · May 5, 2016 · US
Filtration membranes and related compositions, methods and systems
US-9302922-B2 · Apr 5, 2016 · US
Water-treatment separating membrane of high flux having good chlorine resistance
US-9259691-B2 · Feb 16, 2016 · US
Filtration membranes with functionalized star polymers
US-2016008769-A1 · Jan 14, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D69/1251?
- CPC B01D69/1251 is the Cooperative Patent Classification code for “by interfacial polymerisation.”
- How many patents are filed under CPC B01D69/1251 (by interfacial polymerisation)?
- Our database includes 475 publications tagged with this CPC code.
- Is patent activity under CPC B01D69/1251 growing?
- Publication counts under this code: 67 in 2024 vs 49 in 2025 (latest complete years).