Patents by Inventor Uma Chowdhry

Uma Chowdhry 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).

  • Anorthite-cordierite based ceramics from zeolites
    Patent number: 4814303
    Abstract: Process for producing monolithic ceramic articles by sintering at temperatures from about 900.degree. C. to about 1350.degree. C. a shaped zeolite charge comprised of selected zeolites with Si/Al ratios of from about 0.7 to about 5.
    Type: Grant
    Filed: September 25, 1987
    Date of Patent: March 21, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Uma Chowdhry, David R. Corbin, Munirpallam A. Subramanian