Patents by Inventor Richard Thomas Eger

Richard Thomas Eger 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).

  • Nonwoven polypropylene fabric and process
    Patent number: 4086381
    Abstract: There is disclosed a bonded, nonwoven sheet of continuous isotactic polypropylene filaments having a nonselvage portion with specified properties rendering the sheet useful as a carpet backing, said properties including an average bond strength, for bonds having a strength greater than 0.1 gram, of at least 0.9 gram and less than the fiber breaking strength, the sheet being characterized by a selvage having an average bond strength which is from about 15-400% greater than the average bond strength of the non-selvage portion of said sheet. There is also disclosed a process for producing said sheet.
    Type: Grant
    Filed: March 30, 1977
    Date of Patent: April 25, 1978
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: David Alan Cheshire, Samir Costandi Debbas, Richard Thomas Eger, Ken Stephen Schermacher, Paul Thomas Twohig