Patents by Inventor Paul S. Engelen

Paul S. Engelen 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).

  • Methods of thermoforming non-self-supporting polymeric films and articles made therefrom
    Patent number: 7507363
    Abstract: A thermoforming method and objects prepared using the thermoforming method are described. Non-self-supporting, polymeric films are initially formed into a three-dimensional shaped film on a male mold and then transferred to a female mold while being supported by the male mold. The three-dimensional shaped film can be further thermoformed, reinforced, or a combination thereof on the female mold. The resulting object has a substantially uniform thickness across a major surface. The method can preserve the surface quality of the polymeric film used to prepare the three-dimensional objects.
    Type: Grant
    Filed: December 31, 2002
    Date of Patent: March 24, 2009
    Assignee: 3M Innovative Properties Company
    Inventors: Daniel E. Meyer, Karen J. Calverley, Paul S. Engelen, Michael A. Johnson
  • Methods of thermoforming non-self-supporting polymeric films and articles made therefrom
    Publication number: 20040234771
    Abstract: A thermoforming method and objects prepared using the thermoforming method are described. Non-self-supporting, polymeric films are initially formed into a three-dimensional shaped film on a male mold and then transferred to a female mold while being supported by the male mold. The three-dimensional shaped film can be further thermoformed, reinforced, or a combination thereof on the female mold. The resulting object has a substantially uniform thickness across a major surface. The method can preserve the surface quality of the polymeric film used to prepare the three-dimensional objects.
    Type: Application
    Filed: April 5, 2004
    Publication date: November 25, 2004
    Inventors: Daniel E. Meyer, Karen J. Calverley, Paul S. Engelen, Michael A. Johnson