Contaminent removal system using separate liquid sorbent loops
US-2024359132-A1 · Oct 31, 2024 · US
Hydrophobic membranes
Hydrophobic 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 | B01D2325/38 |
| Official title | Hydrophobic membranes |
| Display label | Hydrophobic membranes |
| Total patents | 554 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 46 |
| 2016 | 49 |
| 2017 | 59 |
| 2018 | 44 |
| 2019 | 41 |
| 2020 | 57 |
| 2021 | 55 |
| 2022 | 50 |
| 2023 | 50 |
| 2024 | 39 |
| 2025 | 53 |
| 2026 | 11 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Zwitterion-containing membranes
US-2016303523-A1 · Oct 20, 2016 · US
Polymeric antifouling additives for membranes
US-2016288056-A1 · Oct 6, 2016 · US
Hydrophobic porous silica aerogel composite membrane and vacuum membrane distillation method
US-2016257581-A1 · Sep 8, 2016 · US
Hydrophilic block copolymers and membranes prepared therefrom (I)
US-9394407-B2 · Jul 19, 2016 · US
Hydrophobic or oleophobic microporous polymer membrane with structurally induced beading effect
US-9364796-B2 · Jun 14, 2016 · US
Multilayered charge-mosaic membrane and manufacturing method therefor
US-9346020-B2 · May 24, 2016 · US
Super-surface selective nanomembranes providing simultaneous high permeation flux and high selectivity
US-9308501-B2 · Apr 12, 2016 · US
Method for harvesting culture product
US-2016068565-A1 · Mar 10, 2016 · US
Filter water management using hydrophilic material
US-2016061158-A1 · Mar 3, 2016 · US
Polyimide membranes
US-9272247-B2 · Mar 1, 2016 · US
Oil repellency-imparted air-permeable filter with adhesive layer
US-9254467-B2 · Feb 9, 2016 · US
Non-dispersive process for oil recovery
US-2016008762-A1 · Jan 14, 2016 · US
Anion transport membrane
US-9233345-B2 · Jan 12, 2016 · US
Hydrophilic block copolymers and membranes prepared therefrom (i)
US-2015376340-A1 · Dec 31, 2015 · US
Hydrophilic block copolymers and method of preparation thereof (iii)
US-2015376342-A1 · Dec 31, 2015 · US
Hydrophobic photothermal membranes, devices including the hydrophobic photothermal membranes, and methods for solar desalination
US-2015353385-A1 · Dec 10, 2015 · US
High permeate flux reverse osmosis membrane including carbodiimide compound and method of manufacturing the same
US-9205384-B2 · Dec 8, 2015 · US
Liquid drug degassing device and ambulatory infusion system including a degassing device
US-9205203-B2 · Dec 8, 2015 · US
Hollow fiber membrane module, method for producing hollow fiber membrane, and method for producing hollow fiber membrane module
US-2015343394-A1 · Dec 3, 2015 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D2325/38?
- CPC B01D2325/38 is the Cooperative Patent Classification code for “Hydrophobic membranes.”
- How many patents are filed under CPC B01D2325/38 (Hydrophobic membranes)?
- Our database includes 554 publications tagged with this CPC code.
- Is patent activity under CPC B01D2325/38 growing?
- Publication counts under this code: 39 in 2024 vs 53 in 2025 (latest complete years).