Patents by Inventor Emilia I. Angelova

Emilia I. Angelova 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).

  • Method of manufacture of reinforcing carbon black
    Patent number: 4171345
    Abstract: A method for the production of carbon black which comprises the steps of pyrolyzing at a temperature range of from 250.degree. C. to 950.degree. C., a composition consisting of 0 to 100% scrap vulcanized rubber, 0 to 70% particulate and yarn polymeric resin wastes, and 0 to 50% coke-production, petroleum-refining and petrochemical-derived hydrocarbons to form a mixture of volatile products; recovering and condensing from the products a fraction of cyclic hydrocarbons having a correlation index in excess of 90; and injecting said cyclic hydrocarbon fraction as the feedstock to a carbon-black generating burner to form carbon black.
    Type: Grant
    Filed: July 26, 1977
    Date of Patent: October 16, 1979
    Assignee: Vish Chimiko-Technologicheski Institute
    Inventors: Vassil S. Toshev, Yordan G. Patov, Emilia I. Angelova