Patents by Inventor Akihito Okayasu

Akihito Okayasu 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).

  • Key input device
    Patent number: 7686465
    Abstract: A key input device includes a key input section, mode switching section, key backlight, and key backlight lighting control section. The key input section inputs characters by key input in a plurality of character input modes. The mode switching section switches a plurality of character input modes. The key backlight is placed on a lower surface of the key input section and is lighted in a plurality of colors. The key backlight lighting control section changes the lighting color of the key backlight in accordance with switching of character input modes. A cell phone is disclosed.
    Type: Grant
    Filed: February 27, 2007
    Date of Patent: March 30, 2010
    Assignee: NEC Corporation
    Inventor: Akihito Okayasu
  • KEY INPUT DEVICE
    Publication number: 20070139384
    Abstract: A key input device includes a key input section, mode switching section, key backlight, and key backlight lighting control section. The key input section inputs characters by key input in a plurality of character input modes. The mode switching section switches a plurality of character input modes. The key backlight is placed on a lower surface of the key input section and is lighted in a plurality of colors. The key backlight lighting control section changes the lighting color of the key backlight in accordance with switching of character input modes. A cell phone is disclosed.
    Type: Application
    Filed: February 27, 2007
    Publication date: June 21, 2007
    Applicant: NEC Corporation
    Inventor: Akihito Okayasu
  • Key input device
    Publication number: 20040022047
    Abstract: A key input device includes a key input section, mode switching section, key backlight, and key backlight lighting control section. The key input section inputs characters by key input in a plurality of character input modes. The mode switching section switches a plurality of character input modes. The key backlight is placed on a lower surface of the key input section and is lighted in a plurality of colors. The key backlight lighting control section changes the lighting color of the key backlight in accordance with switching of character input modes. A cell phone is also disclosed.
    Type: Application
    Filed: July 31, 2003
    Publication date: February 5, 2004
    Applicant: NEC Corporation
    Inventor: Akihito Okayasu