Patent 7144921 was granted and assigned to Council of Scientific and Industrial Research on December, 2006 by the United States Patent and Trademark Office.
The present invention provides for the use of oil of clove which causes instant immobilization of human spermatozoa both in presence of seminal fluid as well as in presence of female reproductive tract fluids, including uterine components and cervical mucus and also be useful for treating and/or preventing the common vaginal infections.