Patents by Inventor Glen A. Doering

Glen A. Doering 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).

  • Patent number: 5202403
    Abstract: A modified resole resin and an adhesive composition containing the resin wherein the resin is prepared by first reacting formaldehyde and a phenol at a mole ratio of formaldehyde to phenol of less than about 1.0 in the presence of alkaline in an amount sufficient to provide a mole ratio of said alkaline material to phenol between about 0.04 and 0.08 to form a precursor resin; reacting the precursor resin with lignin to form a lignin-modified phenol-formaldehyde precursor resin, and then reacting the lignin-modified phenol-formaldehyde precursor with additional formaldehyde sufficient to provide a cumulative formaldehyde to phenol mole ratio of between about 2.0 and about 3.0. The adhesive composition is useful in bonding wood chips, veneers and sheets of plywood.
    Type: Grant
    Filed: January 15, 1992
    Date of Patent: April 13, 1993
    Assignee: Georgia-Pacific Resins, Inc.
    Inventor: Glen A. Doering