Patents by Inventor Kerstin Schulze-Matthai

Kerstin Schulze-Matthai 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).

  • Black matrix in color picture tubes and a process for producing said black matrix
    Patent number: 6159645
    Abstract: The invention relates to a black matrix in color picture tubes, a positive photoresist composition, an agent for protecting a black matrix, and a process for producing said black matrix. The invention is based on the object of providing a black matrix produced using a positive photoresist composition which permits good capability of structuring between exposed and non-exposed areas, and reducing the process for producing the black matrix to a few technological steps.
    Type: Grant
    Filed: February 9, 1998
    Date of Patent: December 12, 2000
    Assignee: Samsung Display Devices Co., Ltd.
    Inventors: Andre Wilpert, Gabi Grutzner, Kerstin Schulze-Matthai, Jurgen Bendig, Klaus Tummel