Patents by Inventor Paolo Vietto

Paolo Vietto 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).

  • Ostomy film
    Patent number: 5470624
    Abstract: The invention provides a sheet material which comprises a non-woven plastics film and bonded thereto without an adhesive, a barrier film; the sheet material is especially useful for the production of ostomy bags.
    Type: Grant
    Filed: April 11, 1995
    Date of Patent: November 28, 1995
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Aurelio Oreglia, Paolo Vietto
  • Film
    Patent number: 5455091
    Abstract: The invention provides a sheet material which comprises a non-woven plastics film and bonded thereto without an adhesive, a barrier film; the sheet material is especially useful for the production of ostomy bags.
    Type: Grant
    Filed: December 22, 1994
    Date of Patent: October 3, 1995
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Aurelio Oreglia, Paolo Vietto
  • Manufacture of polymeric products
    Patent number: 4880592
    Abstract: HB polymers, such as copolymers of hydroxy butyric acid and hydroxy valeric acid, are provided as melt extruded films having a thickness of 5 to 200 .mu.m. Sheet materials may consist of such a film or the film may be laminated with other films to increase strength or impermeability. The films are best made by co-extrusion with a thermoplastic that is substantially non-tacky upon solidification. The sheet materials are of particular value as diaper backsheets and ostomy bags. They may include a layer of non-woven material.
    Type: Grant
    Filed: December 8, 1986
    Date of Patent: November 14, 1989
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Francesco Martini, Luigi Perazzo, Paolo Vietto
  • Sheets materials of HB polymers
    Patent number: 4826493
    Abstract: HB polymers, such as copolymers of hydroxy butyric acid and hydroxy valeric acid, are provided as melt extruded films having a thickness of 5 to 200 .mu.m. Sheet materials may consist of such a film or the film may be laminated with other films to increase strength or impermeability. The films are best made by co-extrusion with a thermoplastic that is substantially non-tacky upon solidification. The sheet materials are of particular value as diaper backsheets and ostomy bags. They may include a layer of non-woven material.
    Type: Grant
    Filed: August 13, 1987
    Date of Patent: May 2, 1989
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Francesco Martini, Luigi Perazzo, Paolo Vietto
  • Silent film for ostomy pouches
    Patent number: 4687711
    Abstract: This invention relates to films which have a high degree of silence and pliability and comprise at least one layer formed from a polymeric blend which includes about 40% to 60% by weight of any ethylene and vinyl-acetate copolymer and about 60% to 40% by weight of an elastomeric polyolefin. The elastomeric polyolefin preferably comprises a blend or "alloy" of an ethylene and vinyl-acetate copolymer and an elastomeric ethylene and propylene copolymer. Such films are particularly useful for manufacturing drainage containers or bags for medical applications.
    Type: Grant
    Filed: February 6, 1986
    Date of Patent: August 18, 1987
    Assignee: W. R. Grace & Co., Cryovac Div.
    Inventors: Paolo Vietto, Francesco Martini