Patents by Inventor Leonard Gawelko

Leonard Gawelko 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 for cracking brittle material
    Patent number: 4068788
    Abstract: A machine for separating a sheet of brittle material, for example a semiconductor wafer, into a plurality of pellets is disclosed. The pellets are defined by a plurality of intersecting scribed lines on the sheet. The machine includes a member for applying a shear force to an edge of the sheet whereby the maximum bending moment is applied at a preselected scribe line. The machine is particularly applicable for use with those semiconductor wafers which have a solder coating on both sides.
    Type: Grant
    Filed: September 29, 1975
    Date of Patent: January 17, 1978
    Assignee: RCA Corporation
    Inventors: Nicholas Francis Gubitose, Leonard Gawelko, Robert Joseph Satriano