Patents by Inventor Katsunobu Shioda

Katsunobu Shioda 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).

  • Projection display apparatus using color temperature correctors and liquid crystal shutters
    Patent number: 5105263
    Abstract: A projection display apparatus projects red, green and blue light emitted from three projection tubes. Each light component passes through a projection lens. A separate color temperature corrector is detachably coupled to each projection lens. The color temperature corrector may employ neutral density filters, color dividing means, or liquid-crystal shutters.
    Type: Grant
    Filed: March 28, 1990
    Date of Patent: April 14, 1992
    Assignee: Pioneer Electronic Corporation
    Inventor: Katsunobu Shioda