Patents by Inventor Ralph W. Mahar

Ralph W. Mahar 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).

  • Base coat compositions for wet-on-wet applications, and articles coated therewith
    Patent number: 4532177
    Abstract: Base coat compositions comprise a film-forming resin component selected from one or a mixture of any of alkyd, polyester, acrylic and polyurethane resins, having blended therewith from 1.0 to 15.0% by weight of pigment and from 2.0% to 50.0% by weight of cellulose ester material having the following chemical characteristics:Solution viscosity, seconds--0.05-0.005Acetyl, % by wt.--10.0-15.00Propionyl, % by wt.--0.1-0.8Butyryl, % by wt.--36.0-40.0Free-Hydroxyl, % by wt.--1.0-2.0The compositions when containing pigment such as metallic particles are particularly useful in wet-on-wet automotive finish applications, allowing minimal metallic particle reorientation upon the application thereto of polymeric top coats (particularly those containing solvent), and a considerable increase in solids content.
    Type: Grant
    Filed: July 30, 1984
    Date of Patent: July 30, 1985
    Assignee: Eastman Kodak Company
    Inventor: Ralph W. Mahar