Method of Preparing Polyamide Membrane with Multi-Level Pore Structure Mediated by Protein Fiber Network
US-2026048364-A1 · Feb 19, 2026 · US
Influencing the pH
Influencing the pH · 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 | B01D2323/48 |
| Official title | Influencing the pH |
| Display label | Influencing the pH |
| Total patents | 47 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2016 | 2 |
| 2017 | 6 |
| 2018 | 6 |
| 2019 | 2 |
| 2020 | 5 |
| 2021 | 4 |
| 2022 | 5 |
| 2023 | 4 |
| 2024 | 5 |
| 2025 | 4 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for producing gas separation membrane, and gas separation membrane
US-12544720-B2 · Feb 10, 2026 · US
Water treatment method
US-2026014526-A1 · Jan 15, 2026 · US
Method for making polysulfone-based membrane
US-2026008016-A1 · Jan 8, 2026 · US
Ceramic membrane technology for molecule-range separation
US-12496557-B2 · Dec 16, 2025 · US
Highly Tuneable Graphene Oxide Membranes for Point-of-use to Portable Water Filtration
US-2025352956-A1 · Nov 20, 2025 · US
Zeolite membrane complex, separation apparatus, separation method and method of producing zeolite membrane complex
US-12303842-B2 · May 20, 2025 · US
Covalent organic framework membranes, methods and uses thereof
US-2025001368-A1 · Jan 2, 2025 · US
Compositions and methods for selective extraction of lithium
US-2024424451-A1 · Dec 26, 2024 · US
Method for preparing a novel guanidine-based composite nanofiltration flat-sheet membrane
US-2024408552-A1 · Dec 12, 2024 · US
Anion exchange membrane and method for producing the same
US-2024399319-A1 · Dec 5, 2024 · US
Polysulfone-based membrane for fractionation of erichrome black t (ebt)/divalent salts, and a method of making the same
US-2024325988-A1 · Oct 3, 2024 · US
Reverse osmosis membrane and method of producing the same
US-2024307831-A1 · Sep 19, 2024 · US
Ceramic membrane technology for molecule-range separation
US-2023338904-A1 · Oct 26, 2023 · US
High flux, chlorine resistant coating for sulfate removal membranes
US-11794149-B2 · Oct 24, 2023 · US
Porous film, method for manufacturing porous film, microlens array, microreactor, and bio-device
US-2023249150-A1 · Aug 10, 2023 · US
Method for producing gas separation membrane, and gas separation membrane
US-2023098985-A1 · Mar 30, 2023 · US
Zeolite membrane complex, separation apparatus, separation method and method of producing zeolite membrane complex
US-2022410083-A1 · Dec 29, 2022 · US
Zeolite membrane complex and method of producing zeolite membrane complex
US-11534725-B2 · Dec 27, 2022 · US
Composition for forming separation membrane active layer, method for producing separation membrane, separation membrane, and water treatment module
US-2022226785-A1 · Jul 21, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D2323/48?
- CPC B01D2323/48 is the Cooperative Patent Classification code for “Influencing the pH.”
- How many patents are filed under CPC B01D2323/48 (Influencing the pH)?
- Our database includes 47 publications tagged with this CPC code.
- Is patent activity under CPC B01D2323/48 growing?
- Publication counts under this code: 5 in 2024 vs 4 in 2025 (latest complete years).