Filtration membrane
US-12458932-B2 · Nov 4, 2025 · US
Polysilsesquioxanes or combination of silica with bridging organosilane groups
Polysilsesquioxanes or combination of silica with bridging organosilane groups · 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 | B01D71/702 |
| Official title | {Polysilsesquioxanes or combination of silica with bridging organosilane groups} |
| Display label | Polysilsesquioxanes or combination of silica with bridging organosilane groups |
| Total patents | 49 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 7 |
| 2017 | 3 |
| 2018 | 7 |
| 2019 | 9 |
| 2020 | 3 |
| 2021 | 2 |
| 2022 | 3 |
| 2023 | 5 |
| 2024 | 5 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Hybrid crosslinked polymer membrane
US-12297355-B2 · May 13, 2025 · US
Filtration membrane
US-2024375063-A1 · Nov 14, 2024 · US
Hybrid Crosslinked Polymer Membrane And Process For Fabricating The Same
US-2024327638-A1 · Oct 3, 2024 · US
Hybrid membrane for gas separation
US-12048902-B2 · Jul 30, 2024 · US
Composite semipermeable membrane and method for manufacturing same
US-12012493-B2 · Jun 18, 2024 · US
Polymeric Hollow Fiber Membrane Having A Crosslinked Selective Layer, Carbon Molecular Sieve Hollow Fiber Membrane, And Methods For Preparing The Same
US-2024139688-A1 · May 2, 2024 · US
Gel containing condensation product of reactive silicon compound
US-11767401-B2 · Sep 26, 2023 · US
Hybrid membrane for gas separation
US-2023277988-A1 · Sep 7, 2023 · US
Hybrid membrane for gas separation
US-11673098-B2 · Jun 13, 2023 · US
Composite semipermeable membrane and method for manufacturing same
US-2023145799-A1 · May 11, 2023 · US
Organosilica membranes, methods of making same, and uses thereof
US-2023058997-A1 · Feb 23, 2023 · US
Hybrid Crosslinked Polymer Membrane And Process For Fabricating The Same
US-2022372289-A1 · Nov 24, 2022 · US
Hybrid membrane for gas separation
US-2022212149-A1 · Jul 7, 2022 · US
Self-supporting highly moisture-permeable heat-insulating aerogel film and preparation method thereof
US-11285442-B2 · Mar 29, 2022 · US
Hybrid polymeric hollow fiber membrane, hybrid carbon molecular sieve hollow fiber membrane, and processes for preparing the same
US-11135552-B2 · Oct 5, 2021 · US
Gel containing condensation product of reactive silicon compound
US-2021246269-A1 · Aug 12, 2021 · US
High selectivity facilitated transport membrane comprising polyethersulfone/polyethylene oxide-polysilsesquioxane blend membrane for olefin/paraffin separations
US-10751670-B2 · Aug 25, 2020 · US
Self-supporting highly moisture-permeable heat-insulating aerogel film and preparation method thereof
US-2020261854-A1 · Aug 20, 2020 · US
High flux reverse osmosis membrane comprising polyethersulfone/polyethylene oxide-polysilsesquioxane blend membrane for water purification
US-10654004-B2 · May 19, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D71/702?
- CPC B01D71/702 is the Cooperative Patent Classification code for “Polysilsesquioxanes or combination of silica with bridging organosilane groups.”
- How many patents are filed under CPC B01D71/702 (Polysilsesquioxanes or combination of silica with bridging organosilane groups)?
- Our database includes 49 publications tagged with this CPC code.
- Is patent activity under CPC B01D71/702 growing?
- Publication counts under this code: 5 in 2024 vs 2 in 2025 (latest complete years).