Patents by Inventor James Maurice Quinn

James Maurice Quinn 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 of making heat-sealable, heat-shrinkable, biaxially oriented polyester film
    Patent number: 4020141
    Abstract: A heat-sealable, heat-shrinkable, biaxially oriented polyester film is provided which is usable in making shrink packages having improved seals and improved optics by reason of having:A relative viscosity (at 1% concentration in 60/40 tetrachloroethane/phenol at 30.degree. C.) of at least 1.80;Substantially balanced latent shrinkage of from about 31% to 47% at 100.degree. C.;an average shrinkage force of less than about 1,000 psi at 100.degree. C.;a melting point of from about 215.degree. C. to 230.degree. C.;haze of less than 5%; andSuch film being essentially polyethylene terephthalate.
    Type: Grant
    Filed: March 5, 1975
    Date of Patent: April 26, 1977
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: James Maurice Quinn, Allen Gregg Kirk