Patents by Inventor Elmer L. Schmidt

Elmer L. Schmidt 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).

  • Prevention of enzyme mediated discoloration of wood
    Patent number: 5480679
    Abstract: Methods for preventing non-fungal discoloration of logs, wood and wood products that are free of non-fungal discolorations are provided. The wood is treated with a phytotoxic agent in order to prevent enzyme-mediated discoloration of the wood. The wood subsequently may be monitored to determine viability of parenchyma cells. This invention also relates to unmilled wood that is substantially free of non-fungal discolorations and has nonviable parenchyma cells.
    Type: Grant
    Filed: April 30, 1993
    Date of Patent: January 2, 1996
    Assignee: Regents of the University of Minnesota
    Inventors: Elmer L. Schmidt, Terry L. Amburgey