Patents by Inventor Toshinobu Hosaka

Toshinobu Hosaka 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).

  • Input device and keyboard device having illumination function
    Patent number: 8334794
    Abstract: An input device includes a plurality of manipulation portions; an input function portion manipulated by the manipulation portions to perform an input function; a light guiding sheet facing the rear side of the plurality of manipulation portions; and a light source applying light into the light guiding sheet, wherein a rear surface opposite to a front surface of the light guiding sheet facing the manipulation portions is provided with a plurality of concave portions which is depressed to the inside of the light guiding sheet, wherein each concave portion has a circular opening and an inner surface which is a smooth concave curve surface, and wherein light propagated through the inside of the light guiding sheet is reflected by the inner surface toward the inside of the light guiding sheet, and the light is applied from the front surface of the light guiding sheet to the manipulation portions.
    Type: Grant
    Filed: October 15, 2009
    Date of Patent: December 18, 2012
    Assignee: Alps Electric Co., Ltd.
    Inventors: Kazutoshi Watanabe, Hideaki Nagakubo, Takenobu Kimura, Koichi Yamamoto, Katsuyuki Katayama, Naomi Sato, Naoya Akiyama, Shinichiro Kimura, Masahiro Ishida, Naoki Yamada, Keiji Takagi, Toshinobu Hosaka
  • INPUT DEVICE AND KEYBOARD DEVICE HAVING ILLUMINATION FUNCTION
    Publication number: 20100097246
    Abstract: An input device includes a plurality of manipulation portions; an input function portion manipulated by the manipulation portions to perform an input function; a light guiding sheet facing the rear side of the plurality of manipulation portions; and a light source applying light into the light guiding sheet, wherein a rear surface opposite to a front surface of the light guiding sheet facing the manipulation portions is provided with a plurality of concave portions which is depressed to the inside of the light guiding sheet, wherein each concave portion has a circular opening and an inner surface which is a smooth concave curve surface, and wherein light propagated through the inside of the light guiding sheet is reflected by the inner surface toward the inside of the light guiding sheet, and the light is applied from the front surface of the light guiding sheet to the manipulation portions.
    Type: Application
    Filed: October 15, 2009
    Publication date: April 22, 2010
    Applicant: ALPS ELECTRIC CO., LTD.
    Inventors: Kazutoshi WATANABE, Hideaki Nagakubo, Takenobu Kimura, Koichi Yamamoto, Katsuyki Katayama, Naomi Sato, Naoya Akiyama, Shinichiro Kimura, Masahiro Ishida, Naoki Yamada, Keiji Takagi, Toshinobu Hosaka