Patents by Inventor Marifaith Hackett

Marifaith Hackett 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).

  • Amide-imide resin for production of heat-resistant fiber
    Patent number: 5124428
    Abstract: Fiber grade resin, fiber obtained therefrom, and fiber-containing articles wherein the resin comprises an amide-imide polymer having repeating units of the following general formula: ##STR1## said resin having an inherent viscosity of from about 0.3 to about 1.3 dl/g; an M.sub.n of at least about 5000 g/mole; a ratio of M.sub.w /M.sub.n in the range of from about 1.7 to about 3.3; and a ratio of M.sub.z /M.sub.w of not greater than about 2.
    Type: Grant
    Filed: May 31, 1991
    Date of Patent: June 23, 1992
    Assignee: Amoco Corporation
    Inventors: Howard B. Yokelson, Stefanos L. Sakellarides, Raymond T. Behrends, Marifaith Hackett