Company Filing History:
Years Active: 2004-2007
Title: Ho Fan Jang: Innovator in Fiber Analysis Technology
Introduction
Ho Fan Jang is a notable inventor based in Vancouver, Canada. He has made significant contributions to the field of fiber analysis technology, particularly in the pulp and paper industry. With a total of 2 patents, his work focuses on innovative methods for determining the properties of wood pulp fibers.
Latest Patents
Jang's latest patents include a "Circularly polarized light method and device for determining wall thickness and orientations of fibrils of cellulosic fibres." This invention provides a novel, rapid method and device for determining the relative phase retardation of different layers of a multi-layered specimen, which is related to the thicknesses of its layers and walls, and the orientations of its optical axes. An intact wood pulp fiber is a typical multi-layered birefringent specimen. This new method is based on the change of polarization of polarized light that passes through a specimen composed of birefringent layers with different optical axis orientations, such as directions of cellulosic microfibrils oriented differently in various layers of wood fibers.
In particular, a novel solution is found to relate the emerging light intensity from an intact wood fiber to the incident light intensity, the wavelength of the light, and the relative phase retardations of various layers and orientations of their cellulosic microfibrils, such as fibril angle, in a circularly polarized light system. This new method evaluates the transmitted light intensities of multiple predetermined wavelengths simultaneously to determine the optical and physical properties of a multi-layered specimen being measured.
Another significant patent is the "Method and apparatus for measuring fiber properties." This invention relates to a fluorescence microscopy technique for measuring physical and chemical properties of individual fiber-like particles. Fluorescence intensity per unit length is shown to be proportional to the fiber coarseness. In addition, other fiber properties such as fiber length, width, and wall thickness can be obtained from fluorescence images, and lignin content from fluorescence spectra. This invention provides a process for determining the uniformity of pulp samples in terms of the physical and chemical properties of the individual fiber-like particles, particularly wood pulp fibers.
Career Highlights
Throughout his career, Ho Fan Jang has worked with prominent organizations in the field. He has been associated with the Pulp and Paper Research Institute of Canada and FPInnovations, where he has