Patents by Inventor Angel Sopena Quesada

Angel Sopena Quesada 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).

  • Intrauterine spermicide
    Patent number: 4353363
    Abstract: An intrauterine spermicide includes a support body onto which is wound a copper spiral acting as a spermicide. The support body has extending therefrom two arched arms which are oriented to extend toward the oviducts. Each of the arms has at its free end a copper mass which is housed in the tip of the respective oviduct.
    Type: Grant
    Filed: January 29, 1981
    Date of Patent: October 12, 1982
    Inventor: Angel Sopena Quesada