Patents by Inventor Edward Koster

Edward Koster 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).

  • Rubber tube manufacture, with film laminate overwrap
    Patent number: 5316713
    Abstract: A process for the manufacture of tubular rubber articles includes a) forming a tube of uncured rubber on a mandrel; b) wrapping the tubular rubber by winding with a film laminate including i) at least one layer of a heat stabilized, oriented nylon film having a thickness of from 13 to 50 .mu.m and having a shrinkage of 2 to 10% in the machine direction, laminated to ii) at least one heat stabilized film selected from an oriented nylon film having a thickness of from 13 to 50 .mu.m and having a shrinkage of 2 to 10% in the machine direction, or a cast nylon film having a thickness of from 15 to 155 .mu.m and having a shrinkage of 0.5 to 1.5% in the machine direction; and c) curing the rubber at an elevated temperature.
    Type: Grant
    Filed: August 26, 1992
    Date of Patent: May 31, 1994
    Assignee: Du Pont Canada Inc.
    Inventor: Edward Koster