Patents by Inventor Josette S. Hyunh-Ba

Josette S. Hyunh-Ba 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).

  • Processes and compositions for repulping wet strength paper and paper products
    Patent number: 5904808
    Abstract: A process of repulping paper a product comprising cellulose fibers, comprising forming an aqueous suspension of paper product to be repulped and an oxidizing agent comprising at least one persulfate salt, and maintaining the pH of the aqueous suspension in a range of from about 2.3 to about 6.5. The process is preferably conducted in the presence of preferred buffer systems. Compositions for conducting such processes are also provided.
    Type: Grant
    Filed: September 16, 1996
    Date of Patent: May 18, 1999
    Assignee: Hercules Incorporated
    Inventors: Robert A. Gelman, Josette S. Hyunh-Ba