Patents by Inventor Samir Costandi Debbas

Samir Costandi Debbas 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
  • Unbonded fibrous non-woven sheet and articles made therefrom
    Patent number: 3993812
    Abstract: An unbonded fibrous non-woven sheet comprising four layers of continuous isotactic polypropylene filaments. A shipping bag may be made from the product obtained by thermally bonding said sheet.
    Type: Grant
    Filed: March 6, 1975
    Date of Patent: November 23, 1976
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Samir Costandi Debbas, Arthur John Herrman, Alexander Gregory Swystun
  • Nonwoven polypropylene fabric
    Patent number: 3991244
    Abstract: A length of layered nonwoven bonded continuous filament isotactic polypropylene fabric for use in preparating cut pile tufted carpets having a high tufted tongue tear strength, low fuzz buildup on beck dyeing and high optical cover at relatively low basis weight.
    Type: Grant
    Filed: July 8, 1975
    Date of Patent: November 9, 1976
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Samir Costandi Debbas