Patents by Inventor Ray C. Johnson

Ray C. Johnson 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 and machine for forming compound curvatures in metal sheets by drawing
    Patent number: 5086635
    Abstract: An improved method of and apparatus for forming sheet material into compound curves by drawing, in which critical positioning, dimensioning and relative curvatures of forming bead stages are provided for such curvatures as sectors of paraboloidal antenna reflectors and other compound curve sheets.
    Type: Grant
    Filed: December 10, 1990
    Date of Patent: February 11, 1992
    Assignee: Chu Associates, Inc.
    Inventors: Charles Creaser, Ray C. Johnson