Patents by Inventor Stephen J. Lisak

Stephen J. Lisak 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).

  • One handed sequential alpha numerical keyboard
    Patent number: 6142687
    Abstract: A keyboard permitting data entry with only one hand in which the keys are arranged in several clusters or banks, distinctly separated from one another. Each bank contains keys with similar functions (i.e., numerical keys, numerical function keys, alphabetic keys, punctuation keys, program function keys and screen function keys.) The bank of numerical keys are arranged in four (4) rows of keys with three (3) keys in each row. The numerical keys are arranged in numerical sequence from left to right and bottom to top. The bank of alphabet keys are arranged in seven (7) rows of keys with four (4) keys in each row. The alphabet keys are in alphabetical sequence from left to right and bottom to top. Banks of various other keys are also arranged to be easily operated with one hand.
    Type: Grant
    Filed: March 16, 1999
    Date of Patent: November 7, 2000
    Inventor: Stephen J. Lisak