Patents by Inventor Allen Halliwell

Allen Halliwell 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: 5244716
    Abstract: A composite extensible material useful for making a clothing article comprising a first film layer resistant to penetration by liquid water by permeable to water vapor adhered at discrete securement locations to a second layer of water vapor vapor permeable extensible sheet material. The adherence between the two layers is such that when the composite material is under zero stretching load and resting on a flat surface the second layer is substantially flat and the first layer is corrugated, ruched or puckered. The adherence is also such that the composite material can be stretched by at least 10% in at least one direction by a load less than that required to stretch the first layer by the same amount on its own.
    Type: Grant
    Filed: December 4, 1989
    Date of Patent: September 14, 1993
    Assignee: Porvair PLC
    Inventors: Jeremy J. Thornton, Allen Halliwell