Patents by Inventor Henry E. Quehl

Henry E. Quehl 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 producing laminates of fabric and fluorocarbon copolymer
    Patent number: 4165404
    Abstract: An improvement in a process for preparing a laminate consisting of a fluorocarbon copolymer sheet of 5 or more mill thickness and a fabric is disclosed. The improvement is using a thin sheet of a fluorocarbon copolymer having a specific melt viscosity low enough to enable the copolymer to wet and penetrate the fabric at fabrication temperatures as an interlayer between the fabric and thick fluorocarbon copolymer sheet and then integrally bonding the laminate by means of heat and pressure. The use of the interlayer increases the level of adhesion between the thick sheet and the fabric.
    Type: Grant
    Filed: November 11, 1977
    Date of Patent: August 21, 1979
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Henry E. Quehl