Patents by Inventor Christoph Serbutoviez

Christoph Serbutoviez 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: 6306469
    Abstract: The invention provides a method of filling a PDLC cell, a polymerizable mixture suitable for this purpose as well as a display device provided with such a PDLC cell. The mixture in accordance with the invention comprises two types of non-volatile reactive monomers, the first type of monomer being readily miscible with liquid crystalline material and the second type of monomer being poorly miscible with the liquid crystalline material. Such mixtures prove to be very stable. In addition, when such mixtures are used in cells, problems regarding compositional drift do not occur. Cells in which the inventive mixture is used demonstrate a relatively low hysteresis as well as a relatively low switching voltage. By virtue thereof, it is very attractive to use these cells in a display device.
    Type: Grant
    Filed: January 26, 1998
    Date of Patent: October 23, 2001
    Assignee: U.S. Philips Corporation
    Inventors: Christoph Serbutoviez, Johan G. Kloosterboer, Fredericus J. Touwslager