The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 15, 2005
Filed:
May. 31, 2001
Raman Naduhatty Selai, Haryana, IN;
Devotta Irudayaraj, Haryana, IN;
Bhaskar Mani, Haryana, IN;
Venketesan Phoobalan, Haryana, IN;
Rewat Bijendra Singh, Haryana, IN;
Rawat Bachan Singh, Haryana, IN;
Bhatnagar Akhilesh Kumar, Haryana, IN;
Raman Naduhatty Selai, Haryana, IN;
Devotta Irudayaraj, Haryana, IN;
Bhaskar Mani, Haryana, IN;
Venketesan Phoobalan, Haryana, IN;
Rewat Bijendra Singh, Haryana, IN;
Rawat Bachan Singh, Haryana, IN;
Bhatnagar Akhilesh Kumar, Haryana, IN;
Indian Oil Corporation Limited, Mumbai, IN;
Abstract
An improved furfural extraction process for lube oil base-stock production from hydrocarbon oils containing aromatic type material by the addition of a solvent comprising of furfural and a co-solvent, said process being conducted in a continuous countercurrent extraction column that facilitates phase separation and increases the raffinate yield while maintaining the same raffinate quality measured by raffinate refractive index.