Dual-layer membrane and method for preparing same
US-2021308627-A1 · Oct 7, 2021 · US
Co-extrusion; Co-spinning
Co-extrusion; Co-spinning · 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 | B01D69/088 |
| Official title | {Co-extrusion; Co-spinning} |
| Display label | Co-extrusion; Co-spinning |
| Total patents | 114 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 14 |
| 2016 | 11 |
| 2017 | 10 |
| 2018 | 5 |
| 2019 | 10 |
| 2020 | 7 |
| 2021 | 8 |
| 2022 | 12 |
| 2023 | 7 |
| 2024 | 12 |
| 2025 | 12 |
| 2026 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method of making carbon molecular sieve membranes
US-11130098-B2 · Sep 28, 2021 · US
Thin film composite hollow fiber membranes for osmotic power generation
US-10987846-B2 · Apr 27, 2021 · US
Porous hollow fiber membrane, method for producing same, and water purification method
US-2020346173-A1 · Nov 5, 2020 · US
Porous hollow fiber membrane, method for producing same, and water purification method
US-10751671-B2 · Aug 25, 2020 · US
Hollow fiber membrane for dehydration of organic solvents via pervaporation process and a method of fabricating the same
US-10722850-B2 · Jul 28, 2020 · US
Apparatus and method for forming a multilayer extrusion comprising component layers of an electrochemical cell
US-2020212466-A1 · Jul 2, 2020 · US
Spinneret, Device Having A Spinneret, Method For Producing A Hollow Fiber Or Hollow Fiber Membrane By Means Of A Spinneret And Filter
US-2020156014-A1 · May 21, 2020 · US
Composite hollow-fiber membrane and production method therefor
US-2020061545-A1 · Feb 27, 2020 · US
Nanofiltration membrane and method of manufacturing a nanofiltration membrane
US-10525423-B2 · Jan 7, 2020 · US
Hollow Fibre Membrane With Improved Separating Efficiency, And Production Of A Hollow Fibre Membrane With Improved Separating Efficiency
US-2019381462-A1 · Dec 19, 2019 · US
Composite nanoparticle stabilized core carbon molecular sieve hollow fiber membranes having improved permeance
US-10500548-B2 · Dec 10, 2019 · US
Thin film composite hollow fiber membranes for osmotic power generation
US-2019202103-A1 · Jul 4, 2019 · US
Porous membranes and associated separation modules and methods
US-10307717-B2 · Jun 4, 2019 · US
Porous asymmetric polyphenylene ether membranes and associated separation modules and methods
US-10252221-B2 · Apr 9, 2019 · US
Porous asymmetric polyphenylene ether membranes and associated separation modules and methods
US-10252220-B2 · Apr 9, 2019 · US
Method, spinneret and system for fabricating multilayer membranes
US-2019099724-A1 · Apr 4, 2019 · US
Methods for regenerating aged carbon molecular sieve membranes
US-2019054427-A1 · Feb 21, 2019 · US
Methods for preparing carbon molecular sieve hollow fiber membranes for gas separation
US-2019030491-A1 · Jan 31, 2019 · US
Composite carbon molecular sieve membranes having anti-substructure collapse particles loaded in a core thereof
US-2019001276-A1 · Jan 3, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D69/088?
- CPC B01D69/088 is the Cooperative Patent Classification code for “Co-extrusion; Co-spinning.”
- How many patents are filed under CPC B01D69/088 (Co-extrusion; Co-spinning)?
- Our database includes 114 publications tagged with this CPC code.
- Is patent activity under CPC B01D69/088 growing?
- Publication counts under this code: 12 in 2024 vs 12 in 2025 (latest complete years).