Patents by Inventor Marcellus Feuckert

Marcellus Feuckert 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).

  • Polysilazanes, processes for their preparation, ceramic materials which contain silicon nitride and can be prepared from them, and preparation thereof
    Patent number: 5030702
    Abstract: The invention relates to novel polysilazanes, their preparation, their further processing to ceramic material containing silicon nitride and this material itself. To prepare the polysilazanes, Si,Si'-diorganyl-N-alkyltetrachloro-disilazanes of the formula RSiCl.sub.2 -NR'-SiCl.sub.2 R are reacted with ammonia. The polysilazanes can then be pyrolyzed to ceramic material containing silicon nitride. The polysilazanes according to the invention dissolve in the customary aprotic solvents.
    Type: Grant
    Filed: March 21, 1990
    Date of Patent: July 9, 1991
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Tilo Vaahs, Hans-Jerg Kleiner, Marcellus Feuckert, Martin Bruck