Patents by Inventor Venkatramana Chandrashekar

Venkatramana Chandrashekar 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).

  • Dyeable polyolefin compositions and dyeing polyolefin compositions
    Patent number: 5550192
    Abstract: Disperse dyeable compositions of ethylene alkyl acrylate grafted onto polypropylene are provided. A process for disperse dyeing polypropylene fibers is provided. This process comprises (a) extruding the polypropylene with about 2 to 10% by weight of a thermoplastic copolymer of ethylene and alkyl acrylates having one to four carbon atoms in the alkyl group into fibers, and (b) exposing the fibers to a disperse dye bath containing a selected disperse dye.
    Type: Grant
    Filed: February 3, 1995
    Date of Patent: August 27, 1996
    Assignee: Lyondell Petrochemical Company
    Inventors: Paresh J. Sheth, Venkatramana Chandrashekar, Roger R. Kolm