Patents by Inventor Saad F. Tahir

Saad F. Tahir 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).

  • Patent number: 5144094
    Abstract: A composite of tungsten oxide on alumina, zirconia, or titania is active in promoting the dehydration of phenols to afford diaryl ethers if the composite is partially reduced with hydrogen at a temperature between 250.degree. and 450.degree. C. Using such a catalyst diaryl ethers may be prepared by the dehydration of phenols in the temperature range of 350.degree. to 550.degree. C.
    Type: Grant
    Filed: August 29, 1991
    Date of Patent: September 1, 1992
    Assignee: UOP
    Inventors: John R. Richmond, Saad F. Tahir