Materials, methods, and sampling devices for preserving and extracting extracellular vesicles in biofluids
US-2026034544-A1 · Feb 5, 2026 · US
Glass
Glass · 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 | B01D71/04 |
| Official title | Glass |
| Display label | Glass |
| Total patents | 56 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 6 |
| 2017 | 4 |
| 2018 | 5 |
| 2019 | 5 |
| 2020 | 8 |
| 2021 | 4 |
| 2022 | 3 |
| 2023 | 4 |
| 2024 | 7 |
| 2025 | 3 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Membrane separation of emulsions produced from hydrocarbon recovery process
US-2026014529-A1 · Jan 15, 2026 · US
CO2-Photothermal Dual-Responsive Nanoemulsion Separation Membrane and Preparation Method Thereof and Applications Thereof
US-2025387758-A1 · Dec 25, 2025 · US
Metal organic framework glass membrane and preparation method thereof
US-12246291-B2 · Mar 11, 2025 · US
Hollow microspheres for biological isolation and recovery
US-2025050283-A1 · Feb 13, 2025 · US
Method for injecting ceramic powders with filter created in situ in the fibrous preform
US-12115696-B2 · Oct 15, 2024 · US
Method for injecting ceramic powders with filter created in situ in the fibrous preform
US-2024262003-A1 · Aug 8, 2024 · US
Process for reducing carbon dioxide content of gas mixture and membrane separation arrangement
US-2024189764-A1 · Jun 13, 2024 · US
Porous body and process for manufacturing same
US-11969695-B2 · Apr 30, 2024 · US
Filter element for fluid filtration
US-2024091689-A1 · Mar 21, 2024 · US
System and process for enriching lithium from seawater
US-2024060196-A1 · Feb 22, 2024 · US
Molybdenum ceramic-based nanocomposite sorbent for removal of organic pollutants from water
US-2024024843-A1 · Jan 25, 2024 · US
Porous glass member
US-2023286853-A1 · Sep 14, 2023 · US
A graphene oxide-based membrane
US-2023201776-A1 · Jun 29, 2023 · US
Method for preparing peptide emulsion formulation
US-2023055555-A1 · Feb 23, 2023 · US
Filtering device, purification device, chemical liquid manufacturing device, filtered substance to be purified, chemical liquid, and actinic ray-sensitive or radiation-sensitive resin composition
US-11559758-B2 · Jan 24, 2023 · US
Porous articles, processes for their preparation and uses thereof
US-2022362718-A1 · Nov 17, 2022 · US
Metal organic framework glass membrane and preparation method thereof
US-2022331745-A1 · Oct 20, 2022 · US
Chemical liquid purification method, chemical liquid manufacturing method, and chemical liquid
US-11465073-B2 · Oct 11, 2022 · US
Filter Membrane Modifying Method Based On Metallic Oxide Particles
US-2021197131-A1 · Jul 1, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D71/04?
- CPC B01D71/04 is the Cooperative Patent Classification code for “Glass.”
- How many patents are filed under CPC B01D71/04 (Glass)?
- Our database includes 56 publications tagged with this CPC code.
- Is patent activity under CPC B01D71/04 growing?
- Publication counts under this code: 7 in 2024 vs 3 in 2025 (latest complete years).