Patents by Inventor Karen J. True

Karen J. True 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 and apparatus for measuring sperm penetration
    Patent number: 4824247
    Abstract: In a method and apparatus for measuring sperm penetration in vitro through previously collected cervical mucus, a flat, transparent slide has one or more capilliary channels which will permit positive introduction of the cervical mucus to one end of each of the channels, and a sperm specimen is placed at the opposite end of each of the channels in direct communication with the cervical mucus in the channels. After incubation, the extent of penetration of the sperm cell specimens through each of the channels can be measured and compared.
    Type: Grant
    Filed: August 31, 1987
    Date of Patent: April 25, 1989
    Assignee: Avtar Sciences, Inc.
    Inventors: Karen J. True, G. Barbara Griffin, Daniel V. Griffin, William M. Nickels