Patents by Inventor Larry E. Philyaw

Larry E. Philyaw 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).

  • In-line method for determining the residue content of an isocyanate and apparatus useful therefor
    Patent number: 6300633
    Abstract: An in-line spectrometric method for determining the distillation residue content in an opaque, dark-colored mixture containing an isocyanate and tar-like materials (residue) during the isocyanate production process. A probe capable of directing light at wavelengths of from 1050 to 2150 nm is inserted in a stream of the residue-containing mixture and light is transmitted through the stream. Light absorption data is collected and a near-infrared spectrum is generated. The residue content is then determined using a chemometric model. Knowledge of the residue content makes it possible to control and optimize the distillation process.
    Type: Grant
    Filed: July 6, 1998
    Date of Patent: October 9, 2001
    Assignee: Bayer Corporation
    Inventors: Robert N. Hunt, Gary F. Allen, Julie A. Jackson, Peter Scharein, Peter J. Ryan, Donald Macnaughton, Jr., Klaus Sommer, Larry E. Philyaw