Patents by Inventor John V. E. Hansen

John V. E. Hansen 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).

  • Non-destructive test method for assessing textile material degradation
    Patent number: 3987665
    Abstract: Method for determining, non-destructively, degradation of certain physical roperties of textile materials wherein a sample of the textile material is held under tension and caused to ring to generate acoustic signals and the frequency of the acoustic signal is compared with the frequency generated from a control of the same material, with any significant difference in frequency of response of the sample as compared with the control indicating a change in physical property.
    Type: Grant
    Filed: August 22, 1975
    Date of Patent: October 26, 1976
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: John V. E. Hansen