Patents by Inventor Chandra Bhushan Rao

Chandra Bhushan Rao 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).

  • Polythioether polymers and curable compositions containing them
    Patent number: 8349951
    Abstract: Polymers are disclosed that include a structure having the formula wherein, R1 is independently selected from a C2-10 n-alkylene group, a C2-6 branched alkylene group, a C6-8 cycloalkylene group, a C6-10 alkylcycloalkylene group, —[(—CH2—)p—X—]q—(—CH2—)r—, or —[(—CH2—)p—X—]q—(—CH2—)r—, wherein at least one —CH2— unit is substituted with a methyl group, wherein p is an integer having a value ranging from 2 to 6, q is an integer having a value ranging from 1 to 5, r is an integer having a value ranging from 2 to 10, and X is selected from O, S, and —NR—, wherein R is hydrogen or methyl; R2 denotes a structure derived from allyl (meth)acrylate or a multi-functional (meth)acrylate; R3 is independently selected from hydrogen and an alkyl group; n is an integer having a value ranging from 1 to 60; and m is a rational number having a value ranging from 0 to 10.
    Type: Grant
    Filed: May 31, 2005
    Date of Patent: January 8, 2013
    Assignee: PRC DeSoto International, Inc.
    Inventors: Suresh Sawant, Chandra Bhushan Rao, Jak H. Aklian
  • Epoxy-capped polythioethers by reacting dithiol, diolefin and monoepoxy olefin
    Patent number: 7671145
    Abstract: Epoxy-capped polythioethers and curable compositions of epoxy-capped polythioethers are disclosed.
    Type: Grant
    Filed: March 7, 2006
    Date of Patent: March 2, 2010
    Assignee: PRC DeSoto International, Inc.
    Inventors: Suresh Sawant, Chandra Bhushan Rao
  • Low temperature liquid polythioether polymers
    Patent number: 7097883
    Abstract: Polythioether polymers, curable compositions of polythioether polymers, the process of making polythioether polymers, and the use of polythioether polymers in sealants, wherein the polythioether polymers and curable compositions are liquid at a temperature of 20° C. or less, are disclosed.
    Type: Grant
    Filed: June 5, 2003
    Date of Patent: August 29, 2006
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Suresh Sawant, Chandra Bhushan Rao, David Rosendo Leon
  • LOW TEMPERATURE LIQUID POLYTHIOETHER POLYMERS
    Publication number: 20040247792
    Abstract: Polythioether polymers, curable compositions of polythioether polymers, the process of making polythioether polymers, and the use of polythioether polymers in sealants, wherein the polythioether polymers and curable compositions are liquid at a temperature of 20° C. or less, are disclosed.
    Type: Application
    Filed: June 5, 2003
    Publication date: December 9, 2004
    Applicant: PRC-DeSoto International, Inc.
    Inventors: Suresh Sawant, Chandra Bhushan Rao, David Rosendo Leon