Reverse osmosis membrane and method of producing the same
US-2024307831-A1 · Sep 19, 2024 · US
Composite membranes; Ultra-thin membranes
Composite membranes; Ultra-thin membranes · 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 | B01D69/12 |
| Official title | Composite membranes; Ultra-thin membranes |
| Display label | Composite membranes; Ultra-thin membranes |
| Total patents | 1,705 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 109 |
| 2016 | 117 |
| 2017 | 177 |
| 2018 | 148 |
| 2019 | 177 |
| 2020 | 196 |
| 2021 | 176 |
| 2022 | 174 |
| 2023 | 136 |
| 2024 | 162 |
| 2025 | 97 |
| 2026 | 36 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Microporous asymmetric organic/inorganic composite membrane
US-2024068116-A1 · Feb 29, 2024 · US
Preparation method of reverse osmosis composite membrane and reverse osmosis composite membrane prepared thereby
US-2024024827-A1 · Jan 25, 2024 · US
Organic/inorganic hybrid compound for fouling resistance, membrane including the same for fouling resistance, and method of preparing membrane for fouling resistance
US-9221019-B2 · Dec 29, 2015 · US
Spliced fiber-reinforced outer shell for cylindrical filtration element
US-2015367287-A1 · Dec 24, 2015 · US
Systems, compositions, and methods for fluid purification
US-9216390-B2 · Dec 22, 2015 · US
Hydrogen separation membrane, and method for manufacturing same
US-2015328590-A1 · Nov 19, 2015 · US
Method for producing porous thermosetting resin sheet, porous thermosetting resin sheet and composite semipermeable membrane using same
US-9186633-B2 · Nov 17, 2015 · US
Superhydrophilic and oleophobic porous materials and methods for making and using the same
US-9186631-B2 · Nov 17, 2015 · US
Composite membrane utilized in membrane distillation
US-2015321146-A1 · Nov 12, 2015 · US
Novel Chemically Stable Ceramic-Metal Composite Membrane for Hydrogen Separation
US-2015314232-A1 · Nov 5, 2015 · US
Nanosieve composite membrane
US-2015306547-A1 · Oct 29, 2015 · US
Composite polyamide membrane made via interfacial polymerization using a blend of non-polar solvents
US-2015306548-A1 · Oct 29, 2015 · US
Air-permeable film imparted with oil repellency
US-9168472-B2 · Oct 27, 2015 · US
Composite polyamide membrane made using substituted benzamide monomer
US-2015298066-A1 · Oct 22, 2015 · US
Composite Gas Separation Membranes with Dialkysiloxane Intermediate Layer
US-2015298071-A1 · Oct 22, 2015 · US
Separation membrane and separation membrane element
US-2015298064-A1 · Oct 22, 2015 · US
High flux thin-film composite forward osmosis and pressure-retarded osmosis membranes
US-9156006-B2 · Oct 13, 2015 · US
Defectless hydrogen separation membrane, production method for defectless hydrogen separation membrane and hydrogen separation method
US-9149762-B2 · Oct 6, 2015 · US
Hollow fiber capillary membrane and method for the production thereof
US-9149770-B2 · Oct 6, 2015 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D69/12?
- CPC B01D69/12 is the Cooperative Patent Classification code for “Composite membranes; Ultra-thin membranes.”
- How many patents are filed under CPC B01D69/12 (Composite membranes; Ultra-thin membranes)?
- Our database includes 1,705 publications tagged with this CPC code.
- Is patent activity under CPC B01D69/12 growing?
- Publication counts under this code: 162 in 2024 vs 97 in 2025 (latest complete years).