Patents by Inventor Marie-Luise Cappel

Marie-Luise Cappel 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).

  • Warp-knit support tape for slide-fastener stringer
    Patent number: 4002045
    Abstract: A slide-fastener stringer foundation is formed of support tapes which are warp-knit. Two different types of weft filaments are used, one being textured and of limited shrinkability and the other being highly shrinkable. The tape so knitted is heat-shrunk so as to cause the shrinkable yarn to form the textured yarn into a mass of bulges or loops on the surface of the tape, thereby imparting to this tape a very smooth texture.
    Type: Grant
    Filed: May 23, 1975
    Date of Patent: January 11, 1977
    Assignee: Opti-Holding AG
    Inventors: Alfons Frohlich, Marie-Luise Cappel
  • Slide-fastener stringer with warp-knit support tapes
    Patent number: 3965833
    Abstract: A slide-fastener stringer foundation is formed of support tapes which are warp-knit. Two different types of weft filaments are used, one being textured and of limited shrinkability and the other being highly shrinkable. The tape so knitted is heat-shrunk so as to cause the shrinkable yarn to form the textured yarn into a mass of bulges or loops on the surface of the tape, thereby imparting to this tape a very smooth texture.
    Type: Grant
    Filed: October 3, 1974
    Date of Patent: June 29, 1976
    Assignee: Opti-Holding AG
    Inventors: Alfons Frohlich, Marie-Luise Cappel