Patents by Inventor Ditmar Raulin

Ditmar Raulin 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).

  • Desensitized quinone diazide compounds utilizing microcrystalline cellulose as desensitizing agent
    Patent number: 5075193
    Abstract: The invention relates to desensitized quinone diazide compounds for use as photoactive components in radiation-sensitive compositions, such as, especially, photoresists, which compounds contain microcrystalline cellulose as desensitizing agent.
    Type: Grant
    Filed: February 27, 1991
    Date of Patent: December 24, 1991
    Assignee: Ciba-Geigy Corporation
    Inventors: Stefan Dresely, Ditmar Raulin