Modified filter membrane and the use thereof
US-11185827-B2 · Nov 30, 2021 · US
by addition of a layer chemically bonded to the membrane
by addition of a layer chemically bonded to the membrane · 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 | B01D67/00933 |
| Official title | {by addition of a layer chemically bonded to the membrane} |
| Display label | by addition of a layer chemically bonded to the membrane |
| Total patents | 114 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 6 |
| 2017 | 6 |
| 2018 | 17 |
| 2019 | 8 |
| 2020 | 10 |
| 2021 | 22 |
| 2022 | 6 |
| 2023 | 13 |
| 2024 | 10 |
| 2025 | 12 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Filtration membranes
US-11167250-B1 · Nov 9, 2021 · US
Antifouling polymer for reverse osmosis and membrane comprising same
US-2021339206-A1 · Nov 4, 2021 · US
Fouling-resistant reverse osmosis membrane, method for producing same, and fouling-resistant reverse osmosis module including same
US-2021291119-A1 · Sep 23, 2021 · US
All-nanoporous hybrid membranes comprising zeolites and metal-organic frameworks synthesized therethrough
US-2021268446-A1 · Sep 2, 2021 · US
Chemoselective nanoporous membranes
US-2021236999-A1 · Aug 5, 2021 · US
Fabricating calcite nanofluidic channels
US-2021162352-A1 · Jun 3, 2021 · US
Fabricating calcite nanofluidic channels
US-10926227-B2 · Feb 23, 2021 · US
Novel materials and methods for photothermal membrane distillation
US-2021023505-A1 · Jan 28, 2021 · US
Porous fluorine-based resin composite membrane and manufacturing method therefor
US-2021023509-A1 · Jan 28, 2021 · US
Composite semipermeable membrane and composite semipermeable membrane element
US-2021001281-A1 · Jan 7, 2021 · US
Colloidal antimicrobial and anti-biofouling coatings for surfaces
US-10842148-B2 · Nov 24, 2020 · US
Nanostructured fibrous membranes for membrane distillation
US-2020316504-A1 · Oct 8, 2020 · US
Filtration medium sequence for biomaterial purification
US-10722848-B2 · Jul 28, 2020 · US
Nanostructured fibrous membranes for membrane distillation
US-10702815-B2 · Jul 7, 2020 · US
Fabricating calcite nanofluidic channels
US-2020171492-A1 · Jun 4, 2020 · US
Polymeric ionomer separation membranes and methods of use
US-10618008-B2 · Apr 14, 2020 · US
Separation membrane
US-2020094197-A1 · Mar 26, 2020 · US
Separation membrane
US-2020094194-A1 · Mar 26, 2020 · US
Method for Treating a Microporous Membrane
US-2020086278-A1 · Mar 19, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D67/00933?
- CPC B01D67/00933 is the Cooperative Patent Classification code for “by addition of a layer chemically bonded to the membrane.”
- How many patents are filed under CPC B01D67/00933 (by addition of a layer chemically bonded to the membrane)?
- Our database includes 114 publications tagged with this CPC code.
- Is patent activity under CPC B01D67/00933 growing?
- Publication counts under this code: 10 in 2024 vs 12 in 2025 (latest complete years).