Patents by Inventor Ralph E. Karpinski

Ralph E. Karpinski 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).

  • Flexible modular insulation
    Patent number: 4304824
    Abstract: A flexible modular insulation quilt is disclosed having two thin flexible layers fused to the borders and surrounding a plurality of shaped foamed material in a vacuum.
    Type: Grant
    Filed: November 10, 1980
    Date of Patent: December 8, 1981
    Inventor: Ralph E. Karpinski