Patents by Inventor Masasuke Morita

Masasuke Morita 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).

  • Keyboard apparatus having separate working areas with thumb-operated shifting of key functions
    Patent number: 4847799
    Abstract: A keyboard apparatus comprises a row of control keys operated by the left-hand thumb of an operator, a row of control keys operated by the operator's right-hand thumb, a first group of data entry keys arranged in a matrix of three rows and five columns in a first working area to be operated by the operator's first to fourth left-hand fingers, and a second group of data entry keys arranged in the same manner as the first in a second working area to be operated by the operator's first to fourth right-hand fingers. The first and second working areas are oriented so that the columns of the first and second groups are generally aligned with the left- and right-hand fingers, respectively.
    Type: Grant
    Filed: April 17, 1987
    Date of Patent: July 11, 1989
    Assignee: NEC Corporation
    Inventors: Masasuke Morita, Toshio Shimada, Toshiro Kitazaki