Patents by Inventor Paul L. Kuhl

Paul L. Kuhl 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 for making structures having low radar reflectivity
    Patent number: 6375779
    Abstract: A lightweight, three dimensional structural article having low radar reflectivity characteristics and good mechanical properties is fabricated from a syntactic foam core having a structural outer skin. A syntactic foam sealing adhesive film is applied to the surface of syntactic foam core and under the outer skin to both seal the foam core and adhere the outer skin. The syntactic foam sealing adhesive is formulated to provide a uniform layer and to reduce the fabrication time and labor while improving the overall radar absorbing characteristics of the structural article.
    Type: Grant
    Filed: October 5, 1999
    Date of Patent: April 23, 2002
    Assignee: McDonnell Douglas Helicopter Company
    Inventors: James L. Melquist, Walter Phillips, Paul L. Kuhl
  • Low density structures having radar absorbing characteristics
    Patent number: 6350513
    Abstract: A lightweight, three dimensional structural article having low radar reflectivity characteristics and good mechanical properties is fabricated from a syntactic foam core having a structural outer skin. A syntactic foam sealing adhesive film is applied to the surface of syntactic foam core and under the outer skin to both seal the foam core and adhere the outer skin. The syntactic foam sealing adhesive is formulated to provide a uniform layer and to reduce the fabrication time and labor while improving the overall radar absorbing characteristics of the structural article.
    Type: Grant
    Filed: October 8, 1997
    Date of Patent: February 26, 2002
    Assignee: McDonnell Douglas Helicopter Company
    Inventors: James L. Melquist, Walter Phillips, Paul L. Kuhl