Patents by Inventor Ramanarayanan GV

Ramanarayanan GV 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).

  • Process for the purification of dihydric phenols
    Patent number: 7541417
    Abstract: A process comprising the steps of dissolving a dihydric phenol in a solvent to form a solution A, contacting the solution A with an adsorbent material selected from the group consisting of metal oxides, modified metal oxides, activated carbons, and clays, filtering the adsorbent material to form a solution B, adding an anti-solvent to the solution B to form a solution C, and distilling the solution C, wherein the dihydric phenol is represented by Formula (I): wherein R is a hydrogen atom or an aliphatic functionality having 1 to 6 carbon atoms and n is an integer having a value of 1 to 4.
    Type: Grant
    Filed: March 30, 2006
    Date of Patent: June 2, 2009
    Assignee: SABIC Innovative Plastics IP B.V.
    Inventors: Sunil Ashtekar, Mahesh Malusare, Gurram Kishan, Pushpa Narayanan, Ramanarayanan GV, Arun Dixit, Pradeep Nadkarni, Jan Plen Lens
  • PROCESS FOR THE PURIFICATION OF DIHYDRIC PHENOLS
    Publication number: 20070232775
    Abstract: A process comprising the steps of dissolving a dihydric phenol in a solvent to form a solution A, contacting the solution A with an adsorbent material selected from the group consisting of metal oxides, modified metal oxides, activated carbons, and clays, filtering the adsorbent material to form a solution B, adding an anti-solvent to the solution B to form a solution C, and distilling the solution C, wherein the dihydric phenol is represented by Formula (I): wherein R is a hydrogen atom or an aliphatic functionality having 1 to 6 carbon atoms and n is an integer having a value of 1 to 4.
    Type: Application
    Filed: March 30, 2006
    Publication date: October 4, 2007
    Applicant: General Electric Company
    Inventors: Sunil Ashtekar, Mahesh Malusare, Gurram Kishan, Pushpa Narayanan, Ramanarayanan GV, Arun Dixit, Pradeep Nadkarni, Jan Lens