FILTERS COMPRISING OXYGEN-DEPLETED SiC MEMBRANES
US-2017348646-A1 · Dec 7, 2017 · US
Operations & Transport
Operations & Transport · 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 | B01D71/02 |
| Official title | — |
| Display label | Operations & Transport (mapped technology topic) |
| Total patents | 351 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 19 |
| 2016 | 20 |
| 2017 | 29 |
| 2018 | 32 |
| 2019 | 43 |
| 2020 | 47 |
| 2021 | 44 |
| 2022 | 33 |
| 2023 | 30 |
| 2024 | 27 |
| 2025 | 19 |
| 2026 | 8 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Molten hydroxide membrane for separation of acid gases from emissions
US-2017333834-A1 · Nov 23, 2017 · US
Methods and systems for producing urea
US-2017327461-A1 · Nov 16, 2017 · US
Transfer line
US-2017312701-A1 · Nov 2, 2017 · US
Ceramic membrane having support materials comprising polyaramid fibers and method for producing said membranes
US-9782728-B2 · Oct 10, 2017 · US
Method for producing a solid nanocomposite material based on hexa- and octa-cyanometallates of alkali metals
US-2017260083-A1 · Sep 14, 2017 · US
Composition for co2 gas separation membrane, co2 gas separation membrane and method for producing same, and co2 gas separation membrane module
US-2017232398-A1 · Aug 17, 2017 · US
Carbon film for fluid separation, fluid separation film module, and method for producing carbon film for fluid separation
US-2017216779-A1 · Aug 3, 2017 · US
Methods and apparatuses for filtering water fluid by screening ionic minerals
US-9718711-B2 · Aug 1, 2017 · US
Filtration filter
US-2017203260-A1 · Jul 20, 2017 · US
Hydrophilic, light active coating for membranes
US-2017203258-A1 · Jul 20, 2017 · US
Separation and storage of fluids using ITQ-55
US-9688542-B2 · Jun 27, 2017 · US
Substrate for liquid filter and method for producing the same
US-2017151534-A1 · Jun 1, 2017 · US
Reverse osmosis membranes and separations
US-2017144106-A1 · May 25, 2017 · US
Hydrocarbon reverse osmosis membranes and separations
US-2017136420-A1 · May 18, 2017 · US
Separation of mixed xylenes
US-2017137350-A1 · May 18, 2017 · US
Separation, storage, and catalytic conversion of fluids using ITQ-55
US-9617164-B2 · Apr 11, 2017 · US
Thermoelectric power generation and mineral extraction from brines
US-2017084812-A1 · Mar 23, 2017 · US
Coated ptfe membrane
US-2017028359-A1 · Feb 2, 2017 · US
Microfiltration device
US-2017030890-A1 · Feb 2, 2017 · US
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D71/02?
- CPC B01D71/02 is the Cooperative Patent Classification code for “Operations & Transport.”
- How many patents are filed under CPC B01D71/02 (Operations & Transport)?
- Our database includes 351 publications tagged with this CPC code.
- Is patent activity under CPC B01D71/02 growing?
- Publication counts under this code: 27 in 2024 vs 19 in 2025 (latest complete years).