Patents by Inventor Stefan Brosgi

Stefan Brosgi 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).

  • Method of manufacturing a liquid-crystal cell
    Patent number: 5108332
    Abstract: A method of introducing the liquid crystal into a liquid-crystal cell is disclosed in which the liquid-crystal material is cooled to the solid state, ground to a grain size less than 50 micrometers, and subsequently sprinkled into the space formed by the spacer and a first substrate. The liquid-crystal cell is then covered and sealed with a second substrate in a vacuum. Thereafter, the liquid crystal is heated to a temperature above the clearing point. The liquid crystal cell can be used as a liquid-crystal display or as a light valve of an optical printer.
    Type: Grant
    Filed: December 28, 1990
    Date of Patent: April 28, 1992
    Assignee: Nokia Unterhaltungeselektronik GmbH
    Inventor: Stefan Brosgi