Patents by Inventor David A. Jasper

David A. Jasper 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).

  • Simple, small, self-contained tests for occult blood
    Patent number: 4473079
    Abstract: A test for occult blood comprises an indicator that registers a chromatic change in the presence of heme and an oxygen-releasing compound, the indicator being carried on a support; a solid oxygen-releasing compound dispersed in a spreadable base and applicator to sample biological material and apply the biological material sample along with the base material-dispersed compound to the support. A chromatic change on the support indicates the presence of occult blood. An examining glove may carry the support at one location and the base material-dispersed compound at another location while a finger of the examining glove may be used as the applicator.
    Type: Grant
    Filed: September 13, 1982
    Date of Patent: September 25, 1984
    Inventors: David A. Jasper, Hugh J. Phillips