Patents by Inventor Charles Laing

Charles Laing 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 of estimating and measuring longitudinal dispersion in optical fibers
    Publication number: 20060244949
    Abstract: A method for measuring longitudinal variation in chromatic dispersion in an optical fiber, comprising: (i) launching into a first end and a second end of optical fiber an optical signal at a wavelength ?1 to collect backscatter power P(z) for different positions z within said optical fiber and providing measured OTDR backscatter traces; (ii) deriving from the measured OTDR backscatter traces at the single OTDR wavelength ?1 either (a) the longitudinal MFD(z) data or (b) the relative MFD data; and (iii) calculating estimated longitudinal dispersion D(z) from the longitudinal MFD(z) data or the relative MFD data, without utilizing any other wavelength data.
    Type: Application
    Filed: April 29, 2005
    Publication date: November 2, 2006
    Inventors: Xin Chen, Charles Laing, Ming-Jung Li, Sonya Raney
  • Backyard playground equipment
    Patent number: D357299
    Type: Grant
    Filed: September 8, 1993
    Date of Patent: April 11, 1995
    Assignee: SUBstantial Play Products, Inc.
    Inventors: Charles Laing, Lynn Laing