Membrane separation of used oil and compositions generated
US-12540290-B2 · Feb 3, 2026 · US
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using extraction processes; apparatus therefor
using extraction processes; apparatus therefor · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C10M175/005 |
| Official title | {using extraction processes; apparatus therefor} |
| Display label | using extraction processes; apparatus therefor |
| Total patents | 24 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2016 | 3 |
| 2017 | 1 |
| 2018 | 2 |
| 2020 | 1 |
| 2021 | 1 |
| 2023 | 4 |
| 2024 | 1 |
| 2025 | 10 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Membrane separation of used oil and compositions generated
US-2025320427-A1 · Oct 16, 2025 · US
Lube base oil manufacturing process utilizing refined oil fraction of waste lubricant, and lube base oil manufactured thereby
US-12421462-B2 · Sep 23, 2025 · US
Process for recycling a circular hydrocarbon from a used high performance lubricant
US-2025270468-A1 · Aug 28, 2025 · US
Method for producing recycled lubricating base oil from waste lubricating oil and recycled lubricating base oil produced thereby
US-2025270467-A1 · Aug 28, 2025 · US
Process of producing high-quality lube base oil by using refined oil fraction of waste lubricant
US-12227705-B2 · Feb 18, 2025 · US
Lube base oil manufacturing process utilizing refined oil fraction of waste lubricant, and lube base oil manufactured thereby
US-2025026992-A1 · Jan 23, 2025 · US
Method of recycling waste lubricant
US-2025026996-A1 · Jan 23, 2025 · US
Method of producing lube base oil and lube base oil produced thereby
US-2025026997-A1 · Jan 23, 2025 · US
Method for regenerating used lubricants using supercritical co2
US-2025011677-A1 · Jan 9, 2025 · US
Method for deodorizing regenerated lubricating oils using supercritical co2
US-2025011676-A1 · Jan 9, 2025 · US
Process of producing high-quality lube base oil by using refined oil fraction of waste lubricant
US-11873456-B2 · Jan 16, 2024 · US
Process of producing high-quality lube base oil by using refined oil fraction of waste lubricant
US-2023416621-A1 · Dec 28, 2023 · US
Method of treating a cooling circuit water contaminated with organic substances and inorganic particles
US-2023406745-A1 · Dec 21, 2023 · US
Membrane Separation of Used Oil and Compositions Generated
US-2023159852-A1 · May 25, 2023 · US
Process of producing high-quality lube base oil by using refined oil fraction of waste lubricant
US-2023054666-A1 · Feb 23, 2023 · US
Separation of contaminants from a liquid mixture
US-11104863-B2 · Aug 31, 2021 · US
Separation of contaminants from a liquid mixture
US-2020078750-A1 · Mar 12, 2020 · US
Perfluoropolyether extraction processes
US-10093880-B2 · Oct 9, 2018 · US
Recovery of perfluorinated polyether oils from grease matrices incorporating extraction aids by carbon dioxide extraction
US-10087393-B2 · Oct 2, 2018 · US