Polybenzimidazole hollow fiber membranes and method for making an asymmetric hollow fiber membrane
US-2016375410-A1 · Dec 29, 2016 · US
Details relating to the spinning process
Details relating to the spinning process · 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 | B01D69/087 |
| Official title | {Details relating to the spinning process} |
| Display label | Details relating to the spinning process |
| Total patents | 290 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 26 |
| 2016 | 35 |
| 2017 | 35 |
| 2018 | 27 |
| 2019 | 32 |
| 2020 | 25 |
| 2021 | 33 |
| 2022 | 25 |
| 2023 | 18 |
| 2024 | 23 |
| 2025 | 10 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for producing porous membrane and drying device of porous membrane
US-9528760-B2 · Dec 27, 2016 · US
Process for continuously washing a hollow fiber membrane for depleting residuals
US-9527040-B2 · Dec 27, 2016 · US
Method for the production of poly(meth)acrylonitrile-based polymer membranes, polymer membranes, and also solutions for the production of a polymer membrane
US-2016354730-A1 · Dec 8, 2016 · US
Deformed porous hollow fiber membrane, production method of deformed porous hollow fiber membrane, and module, filtration device, and water treatment method in which deformed porous hollow fiber membrane is used
US-9511529-B2 · Dec 6, 2016 · US
Polyimide-based macromolecular compound and gas-separation asymmetrical hollow-fibre membrane comprising the same
US-9511320-B2 · Dec 6, 2016 · US
Composite hollow fiber membrane and manufacturing method thereof
US-2016325236-A1 · Nov 10, 2016 · US
Asymmetric membranes based on bupbi
US-2016296892-A1 · Oct 13, 2016 · US
Multi-channel hollow fiber
US-2016288058-A1 · Oct 6, 2016 · US
Method for the production of solvent-stable polymer membranes, polymer membrane and also solution for the production of a polymer membrane
US-2016279577-A1 · Sep 29, 2016 · US
Hollow fiber membrane spinning nozzle, and method for manufacturing hollow fiber membrane
US-2016279579-A1 · Sep 29, 2016 · US
Improving the chemical stability of filtration membranes
US-2016263529-A1 · Sep 15, 2016 · US
Uncrosslinked, high molecular weight, polyimide polymer containing a small amount of bulky diamine
US-2016214067-A1 · Jul 28, 2016 · US
Uncrosslinked, high molecular weight, monoesterified polyimide polymer containing a small amount of bulky diamine
US-2016214066-A1 · Jul 28, 2016 · US
Non-braided, textile-reinforced hollow fiber membrane
US-2016184777-A1 · Jun 30, 2016 · US
High flux hollow fiber ultrafiltration membranes and process for the preparation thereof
US-9364797-B2 · Jun 14, 2016 · US
Tubular fiber membrane with nanoporous skin
US-9352283-B2 · May 31, 2016 · US
Hollow fiber carbon molecular sieve membrane and preparation and use thereof
US-9346011-B2 · May 24, 2016 · US
Ceramic Hollow Fibre Membranes with Improved Mechanical Properties
US-2016136582-A1 · May 19, 2016 · US
Thin film composite hollow fiber membranes for osmotic power generation
US-2016121533-A1 · May 5, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D69/087?
- CPC B01D69/087 is the Cooperative Patent Classification code for “Details relating to the spinning process.”
- How many patents are filed under CPC B01D69/087 (Details relating to the spinning process)?
- Our database includes 290 publications tagged with this CPC code.
- Is patent activity under CPC B01D69/087 growing?
- Publication counts under this code: 23 in 2024 vs 10 in 2025 (latest complete years).