Patents by Inventor Rekha Mahadevaiah

Rekha Mahadevaiah 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).

  • Catalyst for paraffin dehydrogenation
    Patent number: 12145132
    Abstract: Rare earth element containing catalysts for dehydrogenating paraffins and the methods of making the catalysts are disclosed. A rare earth modified alumina support in eta-alumina form, theta-alumina form, or combinations thereof is impregnated with chromium-containing solution. The chromium-impregnated support is then subjected to calcination processes. The produced catalyst contains the rare earth element, chromium, and alumina. The crush strength of the produced catalyst is greater than 0.4 daN/mm.
    Type: Grant
    Filed: October 4, 2019
    Date of Patent: November 19, 2024
    Assignee: SABIC Global Technologies B.V.
    Inventors: Biju Maippan Devassy, Rekha Mahadevaiah, Prashant Kumar Raichur Krishtacharya, Vinod Sankaran Nair
  • Method of preparation of dehydrogenation catalyst with high chromium content
    Patent number: 12121887
    Abstract: A method for the dehydrogenation of lower alkanes is disclosed. The method employs a chromium-alumina dehydrogenation catalyst with high chromium content supported on eta-alumina. The catalyst contains greater than 25 percent by weight chromium in the form of chromium (III) oxide, and exhibits extended stability over traditional alkane dehydrogenation catalysts.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: October 22, 2024
    Assignee: SABIC Global Technologies B.V.
    Inventors: Biju Maippan Devassy, Rekha Mahadevaiah, Prashant Kumar Raichur Krishtacharya, Vinod Sankaran Nair
  • CATALYST FOR PARAFFIN DEHYDROGENATION
    Publication number: 20210387167
    Abstract: Rare earth element containing catalysts for dehydrogenating paraffins and the methods of making the catalysts are disclosed. A rare earth modified alumina support in eta-alumina form, theta-alumina form, or combinations thereof is impregnated with chromium-containing solution. The chromium-impregnated support is then subjected to calcination processes. The produced catalyst contains the rare earth element, chromium, and alumina. The crush strength of the produced catalyst is greater than 0.4 daN/mm.
    Type: Application
    Filed: October 4, 2019
    Publication date: December 16, 2021
    Applicant: SABIC GLOBAL TECHNOLOGIES B.V.
    Inventors: Biju Maippan DEVASSY, Rekha MAHADEVAIAH, Prashant Kumar Raichur KRISHTACHARYA, Vinod Sankaran NAIR
  • METHOD OF PREPARATION OF DEHYDROGENATION CATALYST WITH HIGH CHROMIUM CONTENT
    Publication number: 20210001316
    Abstract: A method for the dehydrogenation of lower alkanes is disclosed. The method employs a chromium-alumina dehydrogenation catalyst with high chromium content supported on eta-alumina. The catalyst contains greater than 25 percent by weight chromium in the form of chromium (III) oxide, and exhibits extended stability over traditional alkane dehydrogenation catalysts.
    Type: Application
    Filed: February 22, 2019
    Publication date: January 7, 2021
    Inventors: Biju Maippan DEVASSY, Rekha MAHADEVAIAH, Prashant Kumar Raichur KRISHTACHARYA, Vinod Sankaran NAIR
  • METHODS FOR PREPARING GLYCEROL TERT-BUTYL ETHERS
    Publication number: 20180016217
    Abstract: Methods for generating glycerol tert-butyl ethers include reacting isobutylene and glycerol in the presence of a catalyst and a co-solvent cum co-reactant to produce a mono-, di-, or tri-glycerol tert-butyl ether, where the isobutylene and glycerol are partially miscible.
    Type: Application
    Filed: January 28, 2016
    Publication date: January 18, 2018
    Applicant: SABIC Global Technologies, B.V.
    Inventors: Sunil Shivajirao Dhumal, Vinod Sankaran Nair, Rekha Mahadevaiah, Umesh Krishna Hasyagar