Patents by Inventor Nnamdi E. Aniedobe

Nnamdi E. Aniedobe 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).

  • Processing cellulose acetate formed articles using supercritical fluid
    Patent number: 5512231
    Abstract: A process for preparing cellulose acetate articles such as fibers. The process includes the following steps: Cellulose acetate is dissolved in a solvent to form a solution, the solvent made up of from 5% to 50% by weight of carbon dioxide and from 95% to 50% of a compatible solvent such as acetone. The solvent is above the supercritical conditions of CO.sub.2. The solution is filtrated of insoluble matter and extended to form a fiber or similar article.
    Type: Grant
    Filed: January 26, 1995
    Date of Patent: April 30, 1996
    Assignee: Hoechst Celanese Corporation
    Inventors: Mark C. Thies, Nnamdi E. Aniedobe, George A. Serad