Crosslinked ion-exchange materials, related methods, and related articles
US-2024050906-A1 · Feb 15, 2024 · US
Chemically bonded layers, e.g. cross-linking
Chemically bonded layers, e.g. cross-linking · 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 | B01D69/1214 |
| Official title | {Chemically bonded layers, e.g. cross-linking} |
| Display label | Chemically bonded layers, e.g. cross-linking |
| Total patents | 326 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 21 |
| 2016 | 19 |
| 2017 | 38 |
| 2018 | 32 |
| 2019 | 32 |
| 2020 | 36 |
| 2021 | 36 |
| 2022 | 23 |
| 2023 | 23 |
| 2024 | 29 |
| 2025 | 31 |
| 2026 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Filtration membranes with functionalized star polymers
US-2017361281-A1 · Dec 21, 2017 · US
Nanocarbon immobilized membranes
US-2017333848-A1 · Nov 23, 2017 · US
Separation membrane structure and nitrogen concentration reduction method
US-2017291135-A1 · Oct 12, 2017 · US
Filtration membranes with functionalized star polymers
US-9782727-B2 · Oct 10, 2017 · US
Microporous polyolefin film, separator for battery, and production processes therefor
US-2017274329-A1 · Sep 28, 2017 · US
Composite Hollow Fiber Membrane Module and Manufacturing Method Therefor
US-2017266625-A1 · Sep 21, 2017 · US
Ceramic filter
US-2017232400-A1 · Aug 17, 2017 · US
Forward osmosis membrane and forward osmosis treatment system
US-2017225131-A1 · Aug 10, 2017 · US
Copolymer and carbon dioxide gas separation membrane
US-9724652-B2 · Aug 8, 2017 · US
Method for producing acid gas separation composite membrane, and acid gas separation membrane module
US-9718030-B2 · Aug 1, 2017 · US
Porous filter
US-2017157568-A1 · Jun 8, 2017 · US
Composite semi-permeable membrane useful for water desalination
US-2017144110-A1 · May 25, 2017 · US
Polyamide water-treatment separation membrane with improved antifouling properties and manufacturing method thereof
US-9649597-B2 · May 16, 2017 · US
Thin film composite membrane derived from tetra-functional acyl halide monomer
US-9643128-B2 · May 9, 2017 · US
Water separation composite membrane
US-2017113190-A1 · Apr 27, 2017 · US
Composite polyamide membrane with improved structure
US-9630149-B2 · Apr 25, 2017 · US
Composite polyamide membrane with increased carboxylic acid functionality
US-9610542-B2 · Apr 4, 2017 · US
Separation membrane for treating acid gas-containing gas, and method for manufacturing separation membrane for treating acid gas-containing gas
US-2017087508-A1 · Mar 30, 2017 · US
Hollow fiber membrane
US-2017001152-A1 · Jan 5, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D69/1214?
- CPC B01D69/1214 is the Cooperative Patent Classification code for “Chemically bonded layers, e.g. cross-linking.”
- How many patents are filed under CPC B01D69/1214 (Chemically bonded layers, e.g. cross-linking)?
- Our database includes 326 publications tagged with this CPC code.
- Is patent activity under CPC B01D69/1214 growing?
- Publication counts under this code: 29 in 2024 vs 31 in 2025 (latest complete years).