Patents by Inventor Engelbert Overkott

Engelbert Overkott 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).

  • Silica brick and process for producing same
    Patent number: 4866015
    Abstract: Silica brick with a quartz grain structure that can be detected in the matrix and is converted to cristobalite and/or tridymite, where the quartz grain structures are surrounded by a thin layer of tridymite formed from a silica gel and/or silica sol and consisting of fine tridymite crystals matted together.
    Type: Grant
    Filed: February 12, 1988
    Date of Patent: September 12, 1989
    Assignee: Dr. C. Otto Feuerfest GmbH
    Inventors: Hans-Joachim Koschlig, Engelbert Overkott