Patents by Inventor C. Seetharaman

C. Seetharaman 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).

  • 2-aryl-3-(aminoaryl)-3-(hydroxyaryl)phthalimidine compounds and methods for making them
    Patent number: 7348439
    Abstract: Compounds and methods for preparing 2-aryl-3-(aminoaryl)-3-(hydroxyaryl)phthalimidines having a formula of: wherein R1 is independently selected from a group consisting of a hydrocarbyl radical, a nitro radical, and a halogen atom; “a” is an integer from 0–4; and Ar1 and Ar2 are each independently an aromatic radical, are disclosed. The 2-aryl-3-(aminoaryl)-3-(hydroxyaryl)phthalimidine compounds are useful for preparing other useful monomers and polymers.
    Type: Grant
    Filed: November 29, 2005
    Date of Patent: March 25, 2008
    Assignee: General Electric Company
    Inventors: Balakrishnan Ganesan, Gurram Kishan, Pradeep Jeevaji Nadkarni, Vinod Kumar Rai, C. Seetharaman
  • 2-ARYL-3-(AMINOARYL)-3-(HYDROXYARYL)PHTHALIMIDINE COMPOUNDS AND METHODS FOR MAKING THEM
    Publication number: 20070197761
    Abstract: Compounds and methods for preparing 2-aryl-3-(aminoaryl)-3-(hydroxyaryl)phthalimidines having a formula of: wherein R1 is independently selected from a group consisting of a hydrocarbyl radical, a nitro radical, and a halogen atom; “a” is an integer from 0-4; and Ar1 and Ar2 are each independently an aromatic radical, are disclosed. The 2-aryl-3-(aminoaryl)-3-(hydroxyaryl)phthalimidine compounds are useful for preparing other useful monomers and polymers.
    Type: Application
    Filed: April 26, 2007
    Publication date: August 23, 2007
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Balakrishnan Ganesan, Gurram Kishan, Pradeep Nadkarni, Vinod Rai, C. Seetharaman
  • 2-ARYL-3-(AMINOARYL)-3-(HYDROXYARYL)PHTHALIMIDINE COMPOUNDS AND METHODS FOR MAKING THEM
    Publication number: 20070123714
    Abstract: Compounds and methods for preparing 2-aryl-3-(aminoaryl)-3-(hydroxyaryl)phthalimidines having a formula of: wherein R1 is independently selected from a group consisting of a hydrocarbyl radical, a nitro radical, and a halogen atom; “a” is an integer from 0-4; and Ar1 and Ar2 are each independently an aromatic radical, are disclosed. The 2-aryl-3-(aminoaryl)-3-(hydroxyaryl)phthalimidine compounds are useful for preparing other useful monomers and polymers.
    Type: Application
    Filed: November 29, 2005
    Publication date: May 31, 2007
    Inventors: Balakrishnan Ganesan, Gurram Kishan, Pradeep Nadkarni, Vinod Rai, C. Seetharaman
  • Aliphatic diol polycarbonates and their preparation
    Patent number: 7138479
    Abstract: The disclosure provides high quality, low yellowness index copolycarbonates comprising structural units derived from at least one aliphatic diol, at least an aromatic dihydroxy compound and a diaryl carbonate. Also disclosed herein is a method of making such copolycarbonates in presence of one or more catalysts.
    Type: Grant
    Filed: May 28, 2004
    Date of Patent: November 21, 2006
    Assignee: General Electric Company
    Inventors: Dibakar Dhara, Abbas Alli G. Shaikh, Gautam Chatterjee, C. Seetharaman
  • ALIPHATIC DIOL POLYCARBONATES AND THEIR PREPARATION
    Publication number: 20050143554
    Abstract: The disclosure provides high quality, low yellowness index copolycarbonates comprising structural units derived from at least one aliphatic diol, at least an aromatic dihydroxy compound and a diaryl carbonate. Also disclosed herein is a method of making such copolycarbonates in presence of one or more catalysts.
    Type: Application
    Filed: May 28, 2004
    Publication date: June 30, 2005
    Inventors: Dibakar Dhara, Abbas Alli Shaikh, Gautam Chatterjee, C. Seetharaman