Patents by Inventor John Douglas Snyder

John Douglas Snyder 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 manufacturing heat-shrinkable polyethylene film
    Patent number: 5904964
    Abstract: Linear low density copolymer of ethylene/1-hexene is made processible into heat shrinkable film by a continuous process starting with the extrusion of the copolymer as a film. The production rate of heat shrinkable film made from linear low density copolymer of ethylene/1-octene-can be increased by the step of blending a minor proportion of highly branched low density polyethylene with either copolymer prior to extrusion.
    Type: Grant
    Filed: September 6, 1994
    Date of Patent: May 18, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: John Douglas Snyder