Patents by Inventor Andrew N. Parfomak

Andrew N. Parfomak 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 measuring degree of cure of resin in a composite material and process for making the same
    Patent number: 5142151
    Abstract: A method for measuring the degree of cure of a resin in a composite material such as a prepreg. The method employs an infrared spectrometer device determining frequency absorbance information of selective frequencies which are representative of the degree of cure of the resin comprised within the prepreg. The method is adaptable for use in on-line production processes for the production of such composite materials.
    Type: Grant
    Filed: October 16, 1990
    Date of Patent: August 25, 1992
    Assignee: Allied-Signal Inc.
    Inventors: William D. Varnell, Mark J. Doty, Scott H. Richgels, Trudie M. Knox, Andrew N. Parfomak