Defect-free carbon molecular sieve membranes with enhanced selectivity and aging resistance and the method of making the same
US-2016367935-A1 · Dec 22, 2016 · US
Polymers having silicon in the main chain, with or without sulfur, nitrogen, oxygen or carbon only
Polymers having silicon in the main chain, with or without sulfur, nitrogen, oxygen or carbon only · 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 | B01D71/70 |
| Official title | Polymers having silicon in the main chain, with or without sulfur, nitrogen, oxygen or carbon only |
| Display label | Polymers having silicon in the main chain, with or without sulfur, nitrogen, oxygen or carbon only |
| Total patents | 381 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 24 |
| 2016 | 36 |
| 2017 | 35 |
| 2018 | 43 |
| 2019 | 46 |
| 2020 | 34 |
| 2021 | 34 |
| 2022 | 23 |
| 2023 | 33 |
| 2024 | 32 |
| 2025 | 24 |
| 2026 | 17 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Gas separation membrane and gas separation membrane module
US-2016354731-A1 · Dec 8, 2016 · US
UV and thermally treated polymeric membranes
US-9492785-B2 · Nov 15, 2016 · US
Composite membranes and methods of use
US-2016325229-A1 · Nov 10, 2016 · US
High selectivity epoxysilicone-cross-linked polyimide membranes for gas separations
US-9480954-B2 · Nov 1, 2016 · US
Porous membranes made up of organopolysiloxane copolymers
US-9475010-B2 · Oct 25, 2016 · US
Nanofiltration membranes and methods of use
US-2016288057-A1 · Oct 6, 2016 · US
Microfabricated artificial lung assist device, and methods of use and manufacture thereof
US-9457138-B2 · Oct 4, 2016 · US
Gas separation composite membrane and method of producing the same, and gas separating module, gas separation apparatus and gas separation method using the same
US-9452392-B2 · Sep 27, 2016 · US
High selectivity epoxysilicone-cross-linked polyimide membranes for gas separations
US-2016271571-A1 · Sep 22, 2016 · US
Ultraviolet and plasma-treated polymeric membranes
US-2016263532-A1 · Sep 15, 2016 · US
Plasma-treated polymeric membranes
US-2016263531-A1 · Sep 15, 2016 · US
Catalytic membranes and applications thereof
US-2016256861-A1 · Sep 8, 2016 · US
Membranes
US-2016256833-A1 · Sep 8, 2016 · US
Uv and thermally treated polymeric membranes
US-2016250585-A1 · Sep 1, 2016 · US
Compositions and methods for the manufacture of lipid nanoparticles
US-2016243255-A1 · Aug 25, 2016 · US
Method of producing composite, and composite
US-2016243507-A1 · Aug 25, 2016 · US
Separation off of a homogeneous catalyst from a reaction mixture with the help of organophilic nanofiltration
US-2016236150-A1 · Aug 18, 2016 · US
Gas separation membrane and gas separation membrane module
US-2016220966-A1 · Aug 4, 2016 · US
Oxygen enrichment membrane and method for producing same
US-2016220967-A1 · Aug 4, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D71/70?
- CPC B01D71/70 is the Cooperative Patent Classification code for “Polymers having silicon in the main chain, with or without sulfur, nitrogen, oxygen or carbon only.”
- How many patents are filed under CPC B01D71/70 (Polymers having silicon in the main chain, with or without sulfur, nitrogen, oxygen or carbon only)?
- Our database includes 381 publications tagged with this CPC code.
- Is patent activity under CPC B01D71/70 growing?
- Publication counts under this code: 32 in 2024 vs 24 in 2025 (latest complete years).