Patents by Inventor Leonard S. Sheiner

Leonard S. Sheiner 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).

  • Laser texturing system providing even heating of textured spots on a rotating disk
    Patent number: 6103990
    Abstract: Laser texturing apparatus includes an acousto-optical modulator which deflects a continuous laser beam into a first optical projection path to texture a first side of a disk or into a second optical projection path to texture a second side of the disk. The modulator causes lateral movement of the laser beam in a first direction as it is initially deflected into the first optical projection path and at the end of its deflection into this path. The modulator also caused lateral movement of the laser beam in a second direction as it is initially deflected into the second optical path and at the end of its deflection into this path. Each optical projection path is configured so that this lateral movement is in the direction of movement of the disk being textured at the spots at which it is textured.
    Type: Grant
    Filed: September 21, 1998
    Date of Patent: August 15, 2000
    Assignee: International Business Machines Corporation
    Inventors: Michael Barenboim, Pieter J. M. Kerstens, Hee Kuwon Park, Leonard S. Sheiner, Andrew Ching Tam