Patents by Inventor Sunil Kumar Narayanan

Sunil Kumar Narayanan 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).

  • PROCESS FOR THE PRODUCTION OF CARBON BLACK
    Publication number: 20180305554
    Abstract: A process for producing surface modified carbon black is disclosed. The process comprises the step of treating carbon black with a sulfur compound in an amount in the range of 0.005%-1% of the carbon black to effect in situ formation of surface groups to produce the surface modified carbon black which when combined with a polymer composition alters the carbon black-polymer interaction to decrease the hysteresis of the polymer composition. The curing time required for polymer composition comprising the surface modified carbon black is also decreased. The preferred sulfur compounds are sulfite or sulfate salts.
    Type: Application
    Filed: November 13, 2017
    Publication date: October 25, 2018
    Inventors: Juan Rodriguez, Ranjan Ghosal, Sunil Kumar Narayanan
  • Process for the production of carbon black
    Patent number: 9873797
    Abstract: A process for treating carbon black with a sulfur-containing compound to obtain a surface modified carbon black that can decrease the hysteresis of a polymer composition by at least 1%.
    Type: Grant
    Filed: October 23, 2012
    Date of Patent: January 23, 2018
    Inventors: Juan Rodriguez, Ranjan Ghosal, Sunil Kumar Narayanan
  • CARBON BLACK FOR USE IN RUBBER PROCESSING
    Publication number: 20160340497
    Abstract: A composition containing carbon black and a naturally occurring oil for use in rubber processing.
    Type: Application
    Filed: April 22, 2016
    Publication date: November 24, 2016
    Inventors: Ranjan Ghosal, Meena Shukla, Sunil Kumar Narayanan, Brindha Mohandoss
  • PROCESS FOR THE PRODUCTION OF CARBON BLACK
    Publication number: 20140290532
    Abstract: A process for producing surface modified carbon black is disclosed. The process comprises the step of treating carbon black with a sulfur compound in an amount in the range of 0.005%-1% of the carbon black to effect in situ formation of surface groups to produce the surface modified carbon black which when combined with a polymer composition alters the carbon black-polymer interaction to decrease the hysteresis of the polymer composition. The curing time required for polymer composition comprising the surface modified carbon black is also decreased. The preferred sulfur compounds are sulfite or sulfate salts.
    Type: Application
    Filed: October 23, 2012
    Publication date: October 2, 2014
    Applicant: ADITYA BIRLA NUVO LIMITED
    Inventors: Juan Rodriguez, Ranjan Ghosal, Sunil Kumar Narayanan