Patents by Inventor Shigeo Ohkubo

Shigeo Ohkubo 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).

  • Venetian blind
    Patent number: 4643238
    Abstract: A venetian blind includes a multiplicity of horizontal slats arranged in vertically spaced relation below a head box. The head box is of a rectangular tubular construction composed of elongate support and cover bars. The support bar includes at least a front side wall and a lower wall, and the cover bar is attached to the support bar in covering relation to an open side of the support bar. The head box accommodates therein a slat tilt adjustment device for adjusting the angle of tilt of the slats.
    Type: Grant
    Filed: September 25, 1985
    Date of Patent: February 17, 1987
    Assignee: Tachikawa Corporation
    Inventors: Takeyoshi Tachikawa, Shigeo Ohkubo