Patents by Inventor Gilbert P. Layfield

Gilbert P. Layfield 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 of producing embossed designs on surfaces
    Patent number: 4321105
    Abstract: A method for producing embossed designs on work surfaces such as on molds, rolls or dies. A photomechanically imageable transfer material is exposed to the design to be embossed. The material is developed and the acid resistant design material remaining on a backing sheet is mechanically transferred to the work surface by burnishing the back of the backing sheet. The surface is then etched and the acid resistant design elements removed so that the embossed work surface is ready for use.
    Type: Grant
    Filed: January 25, 1980
    Date of Patent: March 23, 1982
    Assignee: Standex International Corporation
    Inventors: Christ H. Melonio, Gilbert P. Layfield