Patents by Inventor Sivam Rangavajjula

Sivam Rangavajjula 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 preparation of tertiary alkyl primary amines
    Patent number: 9617200
    Abstract: A method for producing an amine. The first step is contacting a cyanide, an acid, water and a substrate compound capable of generating a carbonium ion by reaction with the acid to generate a first reaction intermediate. The second step is contacting the first reaction intermediate with water to form a second reaction intermediate. The third step is removing cyanide present in the second reaction intermediate to a concentration less than 10 ppm. The fourth step is contacting the second reaction intermediate with an alkali metal hydroxide to form the amine.
    Type: Grant
    Filed: April 2, 2014
    Date of Patent: April 11, 2017
    Assignees: ROHM AND HAAS COMPANY, DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Bharati D. Chheda, John G. Pendergast, Jr., Sivam Rangavajjula, Daniel M. Trauth
  • PROCESS FOR PREPARATION OF TERTIARY ALKYL PRIMARY AMINES
    Publication number: 20160060207
    Abstract: A method for producing an amine. The first step is contacting a cyanide, an acid, water and a substrate compound capable of generating a carbonium ion by reaction with the acid to generate a first reaction intermediate. The second step is contacting the first reaction intermediate with water to form a second reaction intermediate. The third step is removing cyanide present in the second reaction intermediate to a concentration less than 10 ppm.
    Type: Application
    Filed: April 2, 2014
    Publication date: March 3, 2016
    Inventors: Bharati D. Chheda, John G. Pendergast, JR., Sivam Rangavajjula, Daniel M. Trauth