Patents by Inventor Renato Africano

Renato Africano 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).

  • High tenacity propylene polymer composition
    Patent number: 5973078
    Abstract: Process for the production of a high tenacity propylene polymer fiber which comprises:spinning fiber from a molten propylene polymer composition consisting essentially of an olefin polymer (I) and a high molecular weight propylene polymer (II) having a branching index less than 1 and melt strength from 5 to 40 cN; said propylene polymer (II) being present in a concentration from 0.1 to 10% by weight with respect to the total weight of the composition; anddrawing the solid fiber thus obtained with a draw ratio greater than 4.5 when the spinning step is continuous and greater than 5 when the spinning step is discontinuous.
    Type: Grant
    Filed: June 24, 1998
    Date of Patent: October 26, 1999
    Assignee: Montell North America Inc.
    Inventors: Leonardo Pinoca, Renato Africano, Giancarlo Braca
  • High tenacity propylene polymer fiber and process for making it
    Patent number: 5849409
    Abstract: Process for the production of a high tenacity propylene polymer fiber which comprises:spinning fiber from a molten propylene polymer composition consisting essentially of an olefin polymer (I) and a high molecular weight propylene polymer (II) having a branching index less than 1 and melt strength from 5 to 40 cN; said propylene polymer (II) being present in a concentration from 0.1 to 10% by weight with respect to the total weight of the composition; anddrawing the solid fiber thus obtained with a draw ratio greater than 4.5 when the spinning step is continuous and greater than 5 when the spinning step is discontinuous.
    Type: Grant
    Filed: January 26, 1998
    Date of Patent: December 15, 1998
    Assignee: Montell North America Inc.
    Inventors: Leonardo Pinoca, Renato Africano, Giancarlo Braca
  • High tenacity propylene polymer fiber and process for making it
    Patent number: 5747160
    Abstract: Process for the production of a high tenacity propylene polymer fiber which includes:spinning fiber from a molten propylene polymer composition which essentially includes an olefin polymer (I) and a high molecular weight propylene polymer (II) having a branching index less than 1 and melt strength from 5 to 40 cN; the propylene polymer (II) being present in a concentration from 0.1 to 10% by weight with respect to the total weight of the composition; anddrawing the solid fiber thus obtained with a draw ratio greater than 4.5 when the spinning step is continuous and greater than 5 when the spinning step is discontinuous.
    Type: Grant
    Filed: May 14, 1996
    Date of Patent: May 5, 1998
    Assignee: Montell North America Inc.
    Inventors: Leonardo Pinoca, Renato Africano, Giancarlo Braca
  • Fibers suitable for the production of nonwoven fabrics having improved strength and softness characteristics
    Patent number: 5631083
    Abstract: Disclosed is a drawn, polyolefin fiber useful for nonwoven fabrics, the thermobonding index of said fiber being 4.5-9 Newtons, and the flexibility index thereof being 1020-1500. The fiber is composed of a blend of specified polymers. Also disclosed is a process for making the fiber by spinning the blend from a die hole having at the output end a diameter less than 0.5 mm, and drawing the resulting fiber at a draw ratio of 1.1 to 1.8.
    Type: Grant
    Filed: June 13, 1994
    Date of Patent: May 20, 1997
    Assignee: Montell North America Inc.
    Inventors: Leonardo Pinoca, Renato Africano, Leonardo Spagnoli