Patents by Inventor George A. Printzis

George A. Printzis 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 an optical laser keypad
    Patent number: 6525677
    Abstract: An optical laser numeric keypad (100) provides a digital signal indicative of which of a plurality of key locations is selected. The optical laser numeric keypad (100) comprises a plurality of optical sensors (132 and 134) each configured to respond to a change in a received light quantity and to provide an electrical signal in response to a selection of a key at a key location. The received light quantity of at least one of the plurality of optical sensors (132 and 134) is changeable by selection of a key location.
    Type: Grant
    Filed: August 28, 2000
    Date of Patent: February 25, 2003
    Assignee: Motorola, Inc.
    Inventor: George A. Printzis