Patents by Inventor William Michaelson

William Michaelson 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).

  • Polyvinyl chloride/polyurethane hybrid foams
    Patent number: 5086084
    Abstract: Disclosed is a foamed polymeric material comprising a continuous phase of polyurethane having solid polyvinyl chloride particles dispersed therein. The material preferably comprises about 100 parts of a foamable urethane, and 10 to 50 parts polyvinyl chloride particles having a particle size below 200 microns. The material has a microcellular structure with cells preferably on the order of 0.1 mm in average diameter or less. The walls comprise a matrix of polyurethane reinforced with PVC particles. The material may be used as a wood substitute.
    Type: Grant
    Filed: April 18, 1990
    Date of Patent: February 4, 1992
    Assignee: Lee H. Ambrose
    Inventor: William Michaelson