Patents by Inventor Jian Chang Song

Jian Chang Song 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 for determining thickness, degree of cure and other properties of a polymeric coating
    Patent number: 5717217
    Abstract: A method for monitoring the properties of a coating comprising the steps of adding a fluorescence probe to a coating composition which has the ability to undergo microscopic changes in viscosity, the ratio of the intensity of the fluorescence emission of said probe at two wavelengths changing in response to said changes in said viscosity of said coating composition; curing said coating; causing said compound to fluoresce; measuring the fluorescence of said compound; calculating the ratio of the intensities of fluorescence emission of said compound at two or more wavelengths; relating said ratio to the monitored property of said coating.
    Type: Grant
    Filed: May 5, 1994
    Date of Patent: February 10, 1998
    Assignee: Spectra Group Limited, Inc.
    Inventors: Douglas C. Neckers, Jian Chang Song, Afranio Torres-Filho