Patents by Inventor Kenzo Tsubai

Kenzo Tsubai 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).

  • System and method for entering and interpreting a truncated alphamumerical keyboard entry
    Publication number: 20040070522
    Abstract: A keyboard layout for a one-handed keypad having fifteen alphabetic keys. Each key has a primary letter and a secondary letter. The primary letter is keyed by solely striking the key, while the secondary letter requires striking a secondary key first or simultaneously with the primary alphanumeric key. The layout placement minimizes finger travel and keystrokes to generate the most common letters and digraphs in any language.
    Type: Application
    Filed: October 15, 2002
    Publication date: April 15, 2004
    Inventors: Kenzo Tsubai, Linda Marroquin
  • Data entry keyboard
    Patent number: 6348878
    Abstract: A keyboard layout for a one-handed keypad having fifteen alphabetic keys. Each key has a primary letter and a secondary letter. The primary letter is keyed by solely striking the key, while the secondary letter requires striking a secondary key first or simultaneously with the primary alphanumeric key. The layout placement minimizes finger travel and keystrokes to generate the most common letters and digraphs in the English language.
    Type: Grant
    Filed: August 10, 2000
    Date of Patent: February 19, 2002
    Inventor: Kenzo Tsubai