Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Solvent extraction of hydrocarbon oils producing an increased yield of improved quality raffinate

Solvent extraction of hydrocarbon oils producing an increased yield of improved quality raffinate

US Patent 5616238 · Granted Apr 1, 1997

Estimated economic value: $244,856,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Double-walled insulation fabrics2025
Hydroconversion process for making lubricating oil basestockes2005
Reffinate hydroconversion process2003
Integrated lubricant upgrading process2003
Process for solvent extraction of hydrocarbons providing an increased yield of r2001
Ion exchange treatment of extraction solvent to remove acid contaminants2001
Process for manufacturing improved process oils using extraction of hydrotreated2000
Method for making a process oil by using aromatic enrichment with extraction fol2000
Method for making a process oil by using aromatic enrichment and two pass hydrof2000
Method for manufacturing a process oil with improved solvency1998
Process oils and manufacturing process for such using aromatic enrichment and tw1998
Process oils and manufacturing process for such using aromatic enrichment with e1998