Patents by Inventor Donald W. Stobbe

Donald W. Stobbe 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 of shaping blanks of thermoformable material
    Patent number: 5156795
    Abstract: A method of shaping a thermoformable composite material including a polymeric matrix reinforced with continuous filaments which involves locating the material in overlapping relationship with at least one diaphragm of a thermoformable shaping polymer, heating the assembly to a suitable thermoforming temperature and shaping the assembly against a shaping tool surface in a shaping step of less than two minutes.
    Type: Grant
    Filed: May 10, 1989
    Date of Patent: October 20, 1992
    Assignee: Imperial Chemical Industries PLC.
    Inventors: Martin T. Harvey, Donald W. Stobbe, James B. Cattanach