Patents by Inventor Keiji Yajima

Keiji Yajima 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).

  • Apparatus for filling liquid crystal into the cells of liquid crystal display devices
    Patent number: 4099550
    Abstract: A plurality of cells are mounted on a cell holder with their liquid crystal filling ports faced downwardly. A support is used having a longitudinal groove in the upper surface and a liquid crystal holding member in the form of helically wound coil or a bundle of inert fibers is placed in the groove. The support and cell holder are placed in a vacuum tank and the filling ports are contacted against the liquid crystal holding member to fill the liquid crystal into the cells while at the same time inert gas is admitted into the vacuum tank to assist filling.
    Type: Grant
    Filed: September 10, 1976
    Date of Patent: July 11, 1978
    Assignee: Hitachi, Ltd.
    Inventors: Hideo Matsuzaki, Keiji Yajima