Patents Assigned to The University of Maine
  • Pre-extraction and solvent pulping of lignocellulosic material
    Patent number: 7842161
    Abstract: A process of treating a lignocellulosic material includes a pre-extraction step in which hemicellulose is extracted from the lignocellulosic material. Then, in a solvent pulping step, the lignocellulosic material is separated into pulp by contacting the lignocellulosic material with a cooking liquor comprising a solvent. In one embodiment, the solvent has a boiling point of at least about 150° C. In another embodiment, the cooking liquor comprises a mixture of solvent and water.
    Type: Grant
    Filed: December 26, 2007
    Date of Patent: November 30, 2010
    Assignees: The University of Maine System Board of Trustees, International Paper
    Inventors: Adriaan Reinhard Pieter van Heiningen, Sung-Hoon Yoon, Haixuan Zou, Jianer Jiang, Gopal C. Goyal
  • Method for strengthening wood products and modified unsaturated polyester resins therefor
    Patent number: 6808788
    Abstract: The strength of wood composites, including hybrid composites comprising wood members bonded to reinforced polyester members, is improved by modifying the polyester components with a polyisocyanate. Wood composites adhesively bonded with polyester resins modified according to this invention are particularly desirable for use in applications where exterior exposure is contemplated.
    Type: Grant
    Filed: May 17, 2002
    Date of Patent: October 26, 2004
    Assignee: The University of Maine
    Inventor: Ben R. Bogner