Patents by Inventor A. S. Radhakrishna

A. S. Radhakrishna 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).

  • 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
  • Publication number: 20040249030
    Abstract: The invention relates to phosphites comprising substituted or unsubstituted tricyclodecylmethyl groups. The phosphites may also contain substituted and unsubstituted alcohols having about C6-C18 carbon atoms. The alcohol chain may be aliphatic, arylakyl and alkylaryl groups. The method of making of the phosphite composition is also described.
    Type: Application
    Filed: June 5, 2003
    Publication date: December 9, 2004
    Inventors: William Palmer Enlow, Marshall D. Moore, Vaikunth Sitaram Prabhu, Tilak T. Raj, A. S. Radhakrishna, Timmanna Upadhya, Surendra U. Kulkarni
  • Publication number: 20040180995
    Abstract: The invention discloses a stabilised resin composition comprising a thermoplastic resin and a stabilizing benzimidazole based additive compound. In a second embodiment, the invention discloses a method to make a stabilized composition comprising a benzimidazole based stabilising compound and a resin, said method comprising mixing said benzimidazole based stabilising compound with said resin.
    Type: Application
    Filed: March 13, 2003
    Publication date: September 16, 2004
    Inventors: William Palmer Enlow, Marshall D. Moore, Vaikunth Sitaram Prabhu, Tilak T. Raj, A. S. Radhakrishna, Raju Kharatkar
  • Patent number: 6646097
    Abstract: A method for purifying 1,1-bis(4′-hydroxy-3′-methylphenyl)cyclohexane comprises dissolving said 1,1-bis(4′-hydroxy-3′-methylphenyl)cyclohexane in a first solvent consisting essentially of an alcohol to form a first solution; filtering said first solution; adding a second solvent consisting essentially of water to the filtered first solution to form a second solution, wherein said second solution comprises about 40 parts to about 95 parts of the first solvent per 100 parts of the combined weight of the first and second solvents; crystallizing said 1,1-bis(4′-hydroxy-3′-methylphenyl) cyclohexane from said second solution to form a first crystalline product; dissolving said first crystalline product in a third solvent to form a third solution, wherein the third solvent comprises an aromatic compound; and crystallizing said 1,1-bis(4′-hydroxy-3′-methylphenyl)cyclohexane from said third solution to produce a second crystalline product.
    Type: Grant
    Filed: October 31, 2002
    Date of Patent: November 11, 2003
    Assignee: General Electric Company
    Inventors: Ashok Shyadligeri, Gary C. Davis, Debjani Kapila, Ramesh Krishnamurti, A. S. Radhakrishna, Veeraraghavan Srinivasan