Patents by Inventor Martin W. Preus

Martin W. Preus 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).

  • Highly tintable abrasion resistant coatings
    Patent number: 5102695
    Abstract: Clear, abrasion resistant, tintable coating compositions which are based on siloxane/silica hybrid coating resins and which also contain at least about 3 weight percent and up to about 30 weight percent of a tintability enhancing compound comprising at least one alkylated amine formadehyde compound. These coating compositions are especially useful for providing both abrasion resistance and high levels of tinting.
    Type: Grant
    Filed: November 14, 1990
    Date of Patent: April 7, 1992
    Assignee: Swedlow, Inc.
    Inventors: Allen M. Guest, Martin W. Preus, William Lewis
  • Highly tintable abrasion resistant coatings
    Patent number: 5013608
    Abstract: Abrasion resistant, tintable coating compositions which are based on siloxane/silica hybrid coating resins and which also contain at least about 3 percent but less than about 20 percent of a tintability enhancing compound selected from the group consisting of polyhydroxyl-functional compounds and butylated urea formaldehyde compounds. These coating compositions are especially useful for providing both abrasion resistance and high levels of tinting and, optionally, absorbance of ultraviolet radiation. Tetrahydroxybenzophenone is a preferred tintability enhancing compound that also absorbs UV light.
    Type: Grant
    Filed: July 7, 1989
    Date of Patent: May 7, 1991
    Assignee: Swedlow, Inc.
    Inventors: Allen M. Guest, Martin W. Preus, William Lewis