Patents by Inventor Ray V. Foss

Ray V. Foss 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 preparing polyvinylbutyral sheet
    Patent number: 5886075
    Abstract: A process for preparing polyvinylbutyral sheet having a desired uniform adhesivity comprising preparing a blend of polyvinylbutyral and a compatible quantity of a at least one plasticizer and an adhesion control agent, and extruding the blend to form a sheet, the improvement comprising monitoring the acidity of the sheet and adding water to the blend as an agent for controlling the adhesivity of said sheet.
    Type: Grant
    Filed: September 12, 1997
    Date of Patent: March 23, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: John J. Keane, Ray V. Foss, Edward W. Hussey