Patents by Inventor Norbert Hanold

Norbert Hanold 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).

  • Negative-working radiation-sensitive mixture with polymer having 1,2,3-thiadiazole groups, and recording material produced therefrom
    Patent number: 4988606
    Abstract: A negative-working radiation-sensitive mixture comprising a binder and a polymer containing 1,2,3-thiadiazole groups is disclosed. The binder is a polyfunctional compound having functional groups that react with ketene. The polymer is a compound obtained by polymerization of a compound of the general formula I ##STR1## in which R is a polymerizable group. If the polymer is a copolymer containing comonomers having functional groups capable of reacting with ketene, the binder can be omitted. The negative-working radiation-sensitive mixture is particularly suitable for UV, electron beam and X-ray lithography.
    Type: Grant
    Filed: October 12, 1989
    Date of Patent: January 29, 1991
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Werner Prass, Rudolf Zertani, Juergen Lingnau, Norbert Hanold