Patents by Inventor Rosa Maria Castaneda

Rosa Maria Castaneda 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).

  • Hygienic napkin
    Patent number: 3970087
    Abstract: An hygienic napkin comprising an envelope of liquid penetrable material which is folded and secured in such a manner as to form a pouch for receiving absorbent material therein. The envelope is provided with a flap for closing the pouch and a fluid-impervious sheet is provided for preventing passage of liquids all the way through the envelope.
    Type: Grant
    Filed: December 30, 1974
    Date of Patent: July 20, 1976
    Assignee: Colgate-Palmolive Company
    Inventor: Rosa Maria Castaneda