Patents by Inventor Ray M. Harlin

Ray M. Harlin 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 preparing tufted carpet
    Patent number: 4140071
    Abstract: There is disclosed a process for preparing a tufted carpet consisting essentially of feeding simultaneously into a tufting machine a woven or bonded nonwoven sheet of continuous polypropylene filaments and a dyeable, bonded, nonwoven sheet of continuous synthetic organic filaments, said sheets being fed in surface contact with each other, and tufting a pile yarn through both sheets to develop a tufted face having tufts extending above the dyeable, bonded, nonwoven sheet, said pile yarn being selected so as to be dyeable in conjunction with the dyeable, bonded, nonwoven sheet.
    Type: Grant
    Filed: August 9, 1977
    Date of Patent: February 20, 1979
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: John R. Gee, Ray M. Harlin