Patents by Inventor Ross S. Chow

Ross S. Chow 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).

  • Method and apparatus for determining stone cells in paper or pulp
    Patent number: 6936834
    Abstract: Disclosed is a method and apparatus for determining stone cells within a sample of wood pulp or paper. According to the instant invention a portion of the sample is irradiated with light at a predetermined wavelength or within a predetermined range of wavelengths. The incident light causes those areas of the sample that are occupied by stone cells to fluoresce strongly relative to the background matrix of wood pulp or paper. The strongly fluorescing stone cells are registered digitally using a detector, or are observed visually by an operator viewing the sample through an ocular device. The absolute number of stone cells per unit area or a stone cell size-distribution-plot is obtained using one of automated or manual image analysis.
    Type: Grant
    Filed: July 26, 2002
    Date of Patent: August 30, 2005
    Assignee: Alberta Research Council Inc.
    Inventors: Deborah Jean Henry, Ross S. Chow, Hongqi Yuan
  • Method and apparatus for determining stone cells in paper or pulp
    Publication number: 20030020029
    Abstract: Disclosed is a method and apparatus for determining stone cells within a sample of wood pulp or paper. According to the instant invention a portion of the sample is irradiated with light at a predetermined wavelength or within a predetermined range of wavelengths. The incident light causes those areas of the sample that are occupied by stone cells to fluoresce strongly relative to the background matrix of wood pulp or paper. The strongly fluorescing stone cells are registered digitally using a detector, or are observed visually by an operator viewing the sample through an ocular device. The absolute number of stone cells per unit area or a stone cell size-distribution-plot is obtained using one of automated or manual image analysis.
    Type: Application
    Filed: July 26, 2002
    Publication date: January 30, 2003
    Inventors: Deborah Jean Henry, Ross S. Chow, Hongqi Yuan