Patents by Inventor Melvin G. Ostroff

Melvin G. Ostroff 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 engraving method
    Patent number: 4947022
    Abstract: A workpiece having a curved surface is laser engraved by being manipulated in a single plane while maintaining the focal point of the laser beam at a plane corresponding to the average working distance between the surface being engraved and the laser's focusing lens.
    Type: Grant
    Filed: August 4, 1989
    Date of Patent: August 7, 1990
    Assignee: Standard Chair of Gardner, Inc.
    Inventors: Melvin G. Ostroff, Steven K. Ostroff