Patents by Inventor Robert W. F. Wellwood

Robert W. F. Wellwood 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).

  • Low density oriented strand board
    Patent number: 7658873
    Abstract: A low density oriented strand board has an average density of less than about 1.5 times the density of wood species used in the board and a homogenous vertical density profile. Low density OSB may be formed by preheating the wood finish prior to pressing, controlling the moisture content such that the core layer has a higher moisture content than the face layers, or a combination of pre-heating and moisture content control.
    Type: Grant
    Filed: November 23, 2007
    Date of Patent: February 9, 2010
    Assignee: Alberta Research Council Inc.
    Inventors: Liheng Chen, Robert W. F. Wellwood
  • LOW DENSITY ORIENTED STRAND BOARD
    Publication number: 20080132612
    Abstract: A low density oriented strand board has an average density of less than about 1.5 times the density of wood species used in the board and a homogenous vertical density profile. Low density OSB may be formed by preheating the wood finish prior to pressing, controlling the moisture content such that the core layer has a higher moisture content than the face layers, or a combination of pre-heating and moisture content control.
    Type: Application
    Filed: November 23, 2007
    Publication date: June 5, 2008
    Applicant: ALBERTA RESEARCH COUNCIL INC.
    Inventors: Liheng CHEN, Robert W.F. WELLWOOD
  • Low density oriented strand board
    Patent number: 7326456
    Abstract: A low density oriented strand board has an average density of less than about 1.5 times the density of wood species used in the board and a homogenous vertical density profile. Low density OSB may be formed by preheating the wood finish prior to pressing, controlling the moisture content such that the core layer has a higher moisture content than the face layers, or a combination of pre-heating and moisture content control.
    Type: Grant
    Filed: August 8, 2002
    Date of Patent: February 5, 2008
    Assignee: Alberta Research Council Inc.
    Inventors: Liheng Chen, Robert W. F. Wellwood
  • Low density oriented strand board
    Publication number: 20040209102
    Abstract: A low density oriented strand board has an average density of less than about 1.5 times the density of wood species used in the board and a homogenous vertical density profile. Low density OSB may be formed by preheating the wood finish prior to pressing, controlling the moisture content such that the core layer has a higher moisture content than the face layers, or a combination of pre-heating and moisture content control.
    Type: Application
    Filed: June 3, 2004
    Publication date: October 21, 2004
    Inventors: Liheng Chen, Robert W F Wellwood