Patents by Inventor P. Sean McHugh

P. Sean McHugh 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).

  • High alumina brick with metallic carbide and its preparation
    Patent number: 5382555
    Abstract: A high alumina refractory and its preparation are disclosed. In addition to the mix of alumina particles providing an Al.sub.2 O.sub.3 content of at least 50%, by weight, there is included metallic carbide particles, having a critically-selected particle size distribution, in an amount between about 3 and about 25%, by weight, based on the total dry weight at the mixture. Other forms of carbon, like tar, pitch and graphite are omitted. The product is free from black core and has improved resistance to molten slags and metals.
    Type: Grant
    Filed: October 22, 1993
    Date of Patent: January 17, 1995
    Assignee: General Acquisition Corporation
    Inventors: Joseph L. Stein, Donald A. McIntyre, P. Sean McHugh