Patents by Inventor Ronald Rothkranz

Ronald Rothkranz 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 and apparatus for rapid cooling of metal screening masks
    Publication number: 20050077025
    Abstract: A method and apparatus for the rapid cooling of screen masks used in the fabrication of semiconductor components is provided. The method and apparatus use a specially designed cooling plate which is contacted with a mask frame holding the screening mask. After a heated cleaning step which cleans the mask frame and screening mask of metal paste used in the screening operation, the cooling plate having one or more concave lower surfaces contacts the upper surfaces of the mask frame and bends the mask frame in the shape of the concave surfaces. This ensures intimate contact between the cooling plate and mask frame and enhances the thermal efficiency of the cooling step.
    Type: Application
    Filed: October 14, 2003
    Publication date: April 14, 2005
    Applicant: International Business Machines Corporation
    Inventors: Raschid Bezama, William Harkins, David Long, Jason Miller, Christopher Pepe, Ronald Rothkranz, John Rudy, Benjamin Tongue