Patents by Inventor Heinz Schiffer

Heinz Schiffer 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 and apparatus for production of false twist textured composite yarn
    Patent number: 3936996
    Abstract: A cellulose acetate yarn and a nylon or polyester yarn are independently false twist textured in opposite directions on the same machine using different false twisters to impart to each its optimum level of false twist and the yarns are collected side-by-side on a package. The composite balanced, substantially zero-torque yarn is autoclaved, twisted in the course of coning and circular knit into fabrics with no stripping back of the acetate over the nylon or polyester.
    Type: Grant
    Filed: November 8, 1973
    Date of Patent: February 10, 1976
    Assignee: Amcel Europe, S.A.
    Inventor: Heinz Schiffer