Patents by Inventor Sankaran B. Nedumbamana

Sankaran B. Nedumbamana 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).

  • Method of reducing impurities in a catalyst for producing terephthalic acid
    Patent number: 11180439
    Abstract: A method of reducing impurities in a catalyst for the production of purified terephthalic acid includes forming purified terephthalic acid by hydrogenating crude terephthalic acid with a catalyst in a reactor; separating the purified terephthalic acid from the catalyst and reactivating the catalyst by washing with a caustic solution; and flushing the catalyst contaminated with impurities with a non-caustic liquid at a flushing temperature of greater than or equal to 50° C.
    Type: Grant
    Filed: August 9, 2018
    Date of Patent: November 23, 2021
    Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
    Inventors: Syed Azhar Hashmi, Sankaran B. Nedumbamana, Paresh Bhagvanbhai Rasadiya
  • METHOD OF REDUCING IMPURITIES IN A CATALYST FOR PRODUCING TEREPHTHALIC ACID
    Publication number: 20210087132
    Abstract: A method of reducing impurities in a catalyst for the production of purified terephthalic acid includes forming purified terephthalic acid by hydrogenating crude terephthalic acid with a catalyst in a reactor; separating the purified terephthalic acid from the catalyst and reactivating the catalyst by washing with a caustic solution; and flushing the catalyst contaminated with impurities with a non-caustic liquid at a flushing temperature of greater than or equal to 50° C.
    Type: Application
    Filed: August 9, 2018
    Publication date: March 25, 2021
    Inventors: Syed Azhar Hashmi, Sankaran B. Nedumbamana, Paresh Bhagvanbhai Rasadiya