Patents by Inventor T. Tilak Raj

T. Tilak Raj 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).

  • Polymers, polymer compositions, and method of preparation
    Patent number: 7425603
    Abstract: A polymer comprising structural units derived from a polycyclic dihydroxy compound of Formula (I) wherein R1, R2 and R3 are independently at each occurrence selected from the group consisting of a cyano functionality, a halogen, an aliphatic functionality having 1 to 10 carbons, a cycloaliphatic functionality having 3 to 10 carbons, and an aromatic functionality having 6 to 10 carbons; wherein each occurrence of “n”, “m”, and “p” independently has a value of 0, 1, 2, 3, or 4; and wherein the polymer is substantially linear.
    Type: Grant
    Filed: November 29, 2005
    Date of Patent: September 16, 2008
    Assignee: General Electric Company
    Inventors: T. Tilak Raj, Radhakrishna Arakali Srinivasarao, Jan-Pleun Lens, Subrahmanya Bhat K., Umesh Hasyagar, Subash Scindia
  • Methods of polymer preparation using polycyclic dihydroxy compounds
    Patent number: 7381786
    Abstract: Disclosed herein is a process for preparing a polymer comprising structural units derived from polycyclic dihydroxy compound having Formula (I), wherein R1 is selected from the group consisting of a cyano functionality, a nitro functionality, an aliphatic functionality having 1 to 10 carbons, an aliphatic ester functionality having 2 to 10 carbons, a cycloaliphatic ester functionality having 4 to 10 carbons and an aromatic ester functionality having 4 to 10 carbons; R2 is selected from the group consisting of a cyano functionality, a nitro functionality, an aliphatic ester functionality having 2 to 10 carbons, a cycloaliphatic ester functionality having 4 to 10 carbons and an aromatic ester functionality having 4 to 10 carbons; and each R3 and R4, at each occurrence, can be the same or different and are independently at each occurrence an aliphatic functionality having 1 to 10 carbons or a cycloaliphatic functionality having 3 to 10 carbons, “n” is an integer having a value 0 to 4 and “m” is an integer ha
    Type: Grant
    Filed: March 29, 2007
    Date of Patent: June 3, 2008
    Assignee: General Electric Company
    Inventors: Jan Henk Kamps, Jan-Pleun Lens, James A. Mahood, Arakali Srinivasarao Radhakrishna, T. Tilak Raj, Ravindra Vikram Singh
  • Polymers, polymer compositions and method of preparation
    Patent number: 7326763
    Abstract: A polymer comprises structural units derived from a polycyclic dihydroxy compound of Formula (I) wherein R1 is selected from the group consisting of a cyano functionality, a nitro functionality, an aliphatic functionality having 1 to 10 carbons, an aliphatic ester functionality having 2 to 10 carbons, a cycloaliphatic ester functionality having 4 to 10 carbons and an aromatic ester functionality having 4 to 10 carbons; R2 is selected from the group consisting of a cyano functionality, a nitro functionality, an aliphatic ester functionality having 2 to 10 carbons, a cycloaliphatic ester functionality having 4 to 10 carbons and an aromatic ester functionality having 4 to 10 carbons; and R3 and R4 are independently at each occurrence a hydrogen, an aliphatic functionality having 1 to 10 carbons or a cycloaliphatic functionality having 3 to 10 carbons.
    Type: Grant
    Filed: October 28, 2005
    Date of Patent: February 5, 2008
    Assignee: General Electric Company
    Inventors: Jan Henk Kamps, Jan-Pleun Lens, James A. Mahood, Radhakrishna Arakali Srinivasarao, T. Tilak Raj, Ravindra Vikram Singh
  • Polycyclic dihydroxy compounds and methods for preparation
    Patent number: 7208620
    Abstract: A dihydroxy aromatic compound having a Formula (I) wherein R1 is selected from the group consisting of a cyano functionality, a nitro functionality, an aliphatic functionality having 1 to 10 carbons, an aliphatic ester functionality having 2 to 10 carbons, a cycloaliphatic ester functionality having 4 to 10 carbons and an aromatic ester functionality having 4 to 10 carbons; R2 is selected from the group consisting of a cyano functionality, a nitro functionality, an aliphatic ester functionality having 2 to 10 carbons, a cycloaliphatic ester functionality having 4 to 10 carbons and an aromatic ester functionality having 4 to 10 carbons; and each R3 and R4, at each occurrence, can be the same or different and are independently at each occurrence an aliphatic functionality having 1 to 10 carbons or a cycloaliphatic functionality having 3 to 10 carbons, “n” is an integer having a value 0 to 4 and “m” is an integer having a value 0 to 4.
    Type: Grant
    Filed: October 28, 2005
    Date of Patent: April 24, 2007
    Assignee: General Electric Company
    Inventors: Jan Henk Kamps, Jan-Pleun Lens, A. S. Radhakrishna, T. Tilak Raj, Ravindra Vikram Singh