Patents by Inventor Takamasa Okutsu

Takamasa Okutsu 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).

  • Patent number: 6018153
    Abstract: To present an operating apparatus having features including ease of operation, controllability for preventing misoperation, small size, long life, and ease of assembling. The constitution includes a base unit as skeleton of operation unit, a key operation unit (13) having plural switches disposed at the front side of the base unit, a first design sheet (12) disposed at the front side of the key operation unit (13), printing patterns at positions corresponding to each switch, a display device (11) disposed at the front side of the first design sheet (12), having light function elements (11g) for transmitting and shielding the positions corresponding to the patterns on the first design sheet (12), and a second design sheet (10) disposed at the front side of the display device (11), having windows (10b) at positions corresponding to the light function elements.
    Type: Grant
    Filed: January 20, 1998
    Date of Patent: January 25, 2000
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masato Matsuda, Yasuteru Fujii, Takamasa Okutsu, Mitsuo Ebisawa, Masashi Yano