Patents by Inventor Bob J. Cruson

Bob J. Cruson 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).

  • Coextruded plastic sheeting
    Patent number: 4221836
    Abstract: Disclosed is a method for the manufacture of coextruded plastic sheeting from normally incompatible, i.e. difficultly bondable, polymers and the composite sheeting produced thereby. A composite plastic sheeting of a solid hydrocarbon polymer and an ABS polymer normally incompatible therewith is formed by coextruding the hydrocarbon and incompatible ABS polymer with an intermediate layer interposed therebetween of an ABS polymer having a bonding factor and a melt viscosity between each of the hydrocarbon and incompatible ABS polymers which renders the intermediate layer ABS polymer strongly adherable to each adjoining polymer.
    Type: Grant
    Filed: November 23, 1977
    Date of Patent: September 9, 1980
    Assignee: Cosden Technology, Inc.,
    Inventors: Raleigh N. Rutledge, Bob J. Cruson