Reverse osmosis membrane and method of producing the same
US-2024307831-A1 · Sep 19, 2024 · US
in-situ membrane formation
in-situ membrane formation · 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 | B01D2323/40 |
| Official title | in-situ membrane formation |
| Display label | in-situ membrane formation |
| Total patents | 354 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 32 |
| 2016 | 38 |
| 2017 | 32 |
| 2018 | 25 |
| 2019 | 32 |
| 2020 | 32 |
| 2021 | 40 |
| 2022 | 21 |
| 2023 | 32 |
| 2024 | 41 |
| 2025 | 27 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Anion Exchange Membranes and Process for Making
US-2016346741-A1 · Dec 1, 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
Composite polyamide membrane having preferred azo content
US-2016303520-A1 · Oct 20, 2016 · US
Hydrophilically modified fluorinated membrane (v)
US-2016288060-A1 · Oct 6, 2016 · US
Gas separation composite membrane and method of producing the same, and gas separating module, gas separation apparatus and gas separation method using the same
US-9452392-B2 · Sep 27, 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
Composite polyamide membrane treated with dihyroxyaryl compounds and nitrous acid
US-2016271569-A1 · Sep 22, 2016 · US
Phase control for antenna array
US-2016218429-A1 · Jul 28, 2016 · US
Highly crosslinked hybrid polyimide-silsesquioxane membranes
US-2016199791-A1 · Jul 14, 2016 · US
Composite polyamide membrane derived from an aliphatic acyclic tertiary amine compound
US-9387442-B2 · Jul 12, 2016 · US
Novel Flux Enhancing Agent for Improving Composite Polyamide Reverse Osmosis Membrane Performance
US-2016193572-A1 · Jul 7, 2016 · US
Removal of microorganisms from cell culture media
US-2016177252-A1 · Jun 23, 2016 · US
Water-treatment separating membrane of high flux having good chlorine resistance
US-9370751-B2 · Jun 21, 2016 · US
Non-dewetting porous membranes
US-9359480-B2 · Jun 7, 2016 · US
Non-dewetting porous membranes
US-2016144322-A1 · May 26, 2016 · US
Flux enhancing agent for improving composite polyamide reverse osmosis membrane performance
US-9346023-B2 · May 24, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D2323/40?
- CPC B01D2323/40 is the Cooperative Patent Classification code for “in-situ membrane formation.”
- How many patents are filed under CPC B01D2323/40 (in-situ membrane formation)?
- Our database includes 354 publications tagged with this CPC code.
- Is patent activity under CPC B01D2323/40 growing?
- Publication counts under this code: 41 in 2024 vs 27 in 2025 (latest complete years).