Patents Assigned to Personal Hygiene Research Associates
  • Patent number: 4968311
    Abstract: A disposable infant's diaper includes a wrapper comprising a unitary sheet having a base panel affixed to the diaper back section to form a pocket within which the balance of the wrapper sheet is contained. When the diaper is soiled and the user wishes to dispose of it, pulling an end panel of the sheet from the pocket unfolds the sheet to present lateral flaps bounding a center panel, while the sheet remains affixed to the diaper. The diaper is over-folded onto the sheet center panel, after which the lateral flaps are sequentially over-folded atop the diaper and respectively sealingly attached in place. The complete encapsulation of the diaper is achieved following the over-folding of the sheet end panel atop the previously manipulated lateral flaps. Alternative folded configurations of the wrapper sheet are contemplated.
    Type: Grant
    Filed: October 2, 1989
    Date of Patent: November 6, 1990
    Assignee: Personal Hygiene Research Associates
    Inventors: Robert Chickering, William A. Barabino
  • Patent number: 4923455
    Abstract: A disposable diaper includes a sealable disposal envelope integrally attached along a belt area seam of the diaper. A sealing tape-belt member adhered to the envelope provides an airtight seal of this envelope when the used diaper is folded and then inturned around the seam and placed within the envelope. The seam is adherently formed, by among other possibilities, by a heat seal or adhesive such as a double stick adhesive tape. The sealing tape is also provided with an adhesive on both faces. One face of the sealing adhesive is attached to the inside of the envelope while the other face performs a dual function. Initially, this other face secures the opening of the un-used disposal bag in a closed manner but subsequently serves to sealingly close this bag opening following infolding of the used diaper into the attached disposal bag. During use of the diaper, the sealing tape operates as a belt, permitting form-fitting of the diaper about the body.
    Type: Grant
    Filed: May 4, 1988
    Date of Patent: May 8, 1990
    Assignee: Personal Hygiene Research Associates
    Inventors: Raymond S. Dean, William A. Barabino
  • Patent number: 4781712
    Abstract: An absorbent napkin with infolding wrap consisting of an absorbent pad of elongated rectangular configuration with elongate edges defining a short and long dimension and having a body face and an outer face for engagement to clothing, a wrap member attached to at least one of the several elongated edges and adapted to fold along the one of the elongate edges of the members to inwrap the body face, and an adhesive member secured transversely of the wrap member for adhesive engagement to the clothing. The wrap members along the longer dimension are at least half-lengths of the long dimension of the absorbent pad.
    Type: Grant
    Filed: April 10, 1987
    Date of Patent: November 1, 1988
    Assignee: Personal Hygiene Research Associates
    Inventors: William A. Barabino, Raymond S. Dean