Patents by Inventor Anagha Avinash Gupte

Anagha Avinash Gupte has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Selective re-extraction of lube extracts to reduce mutagenicity index
    Patent number: 6146520
    Abstract: A process for reducing the Mutagenicity Index and/or the PCA content of a lubricating oil extract by re-extracting a lubricating oil extract with a second extraction solvent, different from the first extraction solvent, to form a secondary raffinate and a secondary extract mix; separating the secondary raffinate from the secondary extract mix; and separating the secondary raffinate and the secondary extract from said second extraction solvent.
    Type: Grant
    Filed: April 2, 1997
    Date of Patent: November 14, 2000
    Assignee: Mobil Oil Corporation
    Inventors: Anagha Avinash Gupte, David O. Marler
  • Addition of ethers or aldehydes to furfural for aromatic extractions
    Patent number: 5922193
    Abstract: A process to improve the performance of furfural for aromatics extraction from gas oils and lube distillates by the addition of ethers and/or aldehydes, preferably having a dielectric constant less than about 40 @ 25.degree. C.
    Type: Grant
    Filed: August 28, 1996
    Date of Patent: July 13, 1999
    Assignee: Mobil Oil Corporation
    Inventors: Anagha Avinash Gupte, Michael E. Landis, David Owen Marler