Patents by Inventor Larry Grant Robinson

Larry Grant Robinson 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 producing flame-resistant filaments
    Patent number: 4077929
    Abstract: A process for producing flame-resistant filaments by preparing a hot solution of a halogen-containing acrylonitrile polymer composition in an inert organic solvent for the composition, extruding the solution to form filaments and removing the solvent from the filaments. Corrosive attack of the solution on metallic equipment used in the process is greatly reduced by incorporating both water and specified phosphorus compounds in the solution.
    Type: Grant
    Filed: March 6, 1975
    Date of Patent: March 7, 1978
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Larry Grant Robinson