Patents by Inventor Benjamin P. Belles

Benjamin P. Belles 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 for continuous soluble polypropylene recovery from hydrocarbon polymerization media
    Patent number: 4362865
    Abstract: Polypropylene is recovered from a dilute solution in spent organic polymerization medium in a process comprising: (1) partial steam stripping of volatile components from said medium to form an aqueous phase and a concentrated, water-insoluble phase containing the soluble polypropylene; (2) separating said concentrated water-insoluble phase and loading it into an evaporator; (3) evaporating the remaining volatile components from the separated said water-insoluble phase leaving fluidized polypropylene which when drawn off and solidified is suitable for commercial use.
    Type: Grant
    Filed: February 18, 1981
    Date of Patent: December 7, 1982
    Assignee: Standard Oil Company (Indiana)
    Inventor: Benjamin P. Belles
  • Method for continuous soluble polypropylene recovery from hydrocarbon polymerization media
    Patent number: 4098992
    Abstract: Polypropylene is recovered from a dilute solution in spent organic polymerization medium in a process comprising: (1) partial steam stripping of volatile components from said medium to form an aqueous phase and a concentrated, water-insoluble phase containing the soluble polypropylene: (2) separating said concentrated water-insoluble phase and leading it into an evaporator: (3) evaporating the remaining volatile components from the separated said water-insoluble phase leaving fluidized polypropylene which when drawn off and solidified is suitable for commercial use.
    Type: Grant
    Filed: August 9, 1976
    Date of Patent: July 4, 1978
    Assignee: Standard Oil Company a corporation of Indiana
    Inventor: Benjamin P. Belles