Monolayer, composite, gas separation material, filter, gas separation device and method for manufacturing composite
US-12128366-B2 · Oct 29, 2024 · US
Polyvinylidene fluoride
Polyvinylidene fluoride · 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 | B01D71/34 |
| Official title | Polyvinylidene fluoride |
| Display label | Polyvinylidene fluoride |
| Total patents | 648 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 57 |
| 2016 | 54 |
| 2017 | 50 |
| 2018 | 61 |
| 2019 | 61 |
| 2020 | 72 |
| 2021 | 71 |
| 2022 | 66 |
| 2023 | 63 |
| 2024 | 41 |
| 2025 | 43 |
| 2026 | 9 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Melt processable poly(vinyl alcohol) blends and poly(vinyl alcohol) based membranes
US-9486746-B2 · Nov 8, 2016 · US
Filtration method
US-9272245-B2 · Mar 1, 2016 · US
Fouling inhibitor, filtration membrane and method for producing same
US-2015367290-A1 · Dec 24, 2015 · US
Flexible porous film
US-2015360409-A1 · Dec 17, 2015 · US
Polymer composition and porous membrane
US-2015343392-A1 · Dec 3, 2015 · US
Membranes having antibiotic and hydrophilic properties and preparation method thereof
US-2015343387-A1 · Dec 3, 2015 · US
Separation membrane module
US-2015344337-A1 · Dec 3, 2015 · US
Microporous membrane and manufacturing process therefor
US-2015328593-A1 · Nov 19, 2015 · US
Fluoropolymer, production method for fluoropolymer, and porous polymer film
US-9180414-B2 · Nov 10, 2015 · US
Separation membrane and method for producing the same
US-9174174-B2 · Nov 3, 2015 · US
Chemical processing cell with nanostructured membranes
US-9174173-B2 · Nov 3, 2015 · US
Porous membrane and method for manufacturing the same
US-2015298067-A1 · Oct 22, 2015 · US
Microfiltration filter and microfiltration filter cartridge
US-2015298068-A1 · Oct 22, 2015 · US
Hollow porous membrane
US-2015283517-A1 · Oct 8, 2015 · US
Fluid separation unit
US-2015273405-A1 · Oct 1, 2015 · US
Micro-scale liquid-liquid-liquid extraction
US-2015276568-A1 · Oct 1, 2015 · US
Washing device for porous hollow fiber membranes, and porous hollow fiber membrane production method
US-2015265974-A1 · Sep 24, 2015 · US
Fluid Degassing Apparatus
US-2015265945-A1 · Sep 24, 2015 · US
Method for manufacturing hydrophilized hollow fiber membrane by continuous process using extruder
US-2015266222-A1 · Sep 24, 2015 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D71/34?
- CPC B01D71/34 is the Cooperative Patent Classification code for “Polyvinylidene fluoride.”
- How many patents are filed under CPC B01D71/34 (Polyvinylidene fluoride)?
- Our database includes 648 publications tagged with this CPC code.
- Is patent activity under CPC B01D71/34 growing?
- Publication counts under this code: 41 in 2024 vs 43 in 2025 (latest complete years).