Patents by Inventor Walter Passmann

Walter Passmann 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).

  • Patent number: 4099302
    Abstract: A slide fastener comprises a pair of tape-like units each secured to one edge of an article whose edges are to be connected by movement of a slider along the units. Each tape-like unit comprises a row of interconnected coupling elements formed by a synthetic-resin monofilament, each coupling element having an eye or loop-shaped portion deformed to constitute the coupling head which can be received between coupling heads of the other row. From the eye-forming monofilament segments, shanks extend across the tape-like unit and are received in pockets of a multiplicity of longitudinal threads (e.g. as the weft of a weave in which the longitudinal threads form the warp, or in courses of the warp knit in which the longitudinal threads are loop chains).
    Type: Grant
    Filed: September 10, 1976
    Date of Patent: July 11, 1978
    Assignee: OPTI Patent- Forschungs- und Fabrikations-AG
    Inventors: Alfons Frohlich, Walter Passmann