Patents by Inventor W. Z. Polishuk, deceased

W. Z. Polishuk, deceased 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).

  • Patent number: 4151833
    Abstract: The onset of ovulation in a female is detected by measuring the water content of the cervical mucus. A pellet made of a water-swellable polymer is inserted into the vagina. The increase in the size of the pellet, that occurs owing to contact with the vaginal mucus for a selected period of time, is measured. The size of the pellet sharply increases at or about the onset of ovulation.
    Type: Grant
    Filed: April 18, 1977
    Date of Patent: May 1, 1979
    Inventor: W. Z. Polishuk, deceased