Patents by Inventor Leigh Ann Lawrence

Leigh Ann Lawrence 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).

  • Papermaking methods and compositions
    Patent number: 6429253
    Abstract: Papermaking processes are provided which utilize mixtures of wet strength agents and dry strength agents in amounts that provide paper formed therefrom with decreased wet strength, and hence increase repulpability, without unduly compromising dry strength. Stable compositions comprised of mixtures of wet strength agents and dry strength agents, are also provided which may be advantageously used in said processes.
    Type: Grant
    Filed: May 16, 2000
    Date of Patent: August 6, 2002
    Assignee: Bayer Corporation
    Inventors: Gerald J. Guerro, Leigh Ann Lawrence