Patents by Inventor Sabrina Fogliani

Sabrina Fogliani 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).

  • Patent number: 8792761
    Abstract: An optical fiber includes a glass core and a protective coating consisting of a single coating layer disposed to surround the glass core, wherein the single coating layer is formed from a cured polymeric material obtained by curing a radiation curable composition including: (i) a radiation curable urethane (meth)acrylate oligomer, preferably including a backbone derived from polyoxytetramethylene glycol, (ii) at least one monofunctional reactive monomer, (iii) at least one multifunctional reactive monomer, and (iv) an adhesion promoter.
    Type: Grant
    Filed: April 23, 2009
    Date of Patent: July 29, 2014
    Assignee: Prysmian S.p.A.
    Inventors: Lidia Terruzzi, Johannes Adrianus Van Eekelen, Sabrina Fogliani
  • Publication number: 20140163132
    Abstract: The present invention relates to a radiation curable coating composition comprising a radiation curable oligomer comprising a backbone derived from polypropylene glycol and a dimer acid based polyester polyol, wherein said coating composition, when cured, is having: a) a hardening temperature (Th) of from ?10° C. to about ?20° C. and a modulus measured at said Th of lower than 5.0 MPa; or b) a hardening temperature (Th) of from ?20° C. to about ?30° C. and a modulus measured at said Th of lower than 20.0 MPa; or c) a hardening temperature (Th) of lower than about ?30° C. and a modulus measured at said Th of lower than 70.0 MPa.
    Type: Application
    Filed: October 1, 2013
    Publication date: June 12, 2014
    Applicant: DSM IP ASSETS B.V
    Inventors: Sandra Joanna NAGELVOORT, Johannes Adrianus VAN EEKELEN, Adrianus Gijsbertus Maria ABEL, Gouke Dirk-Jan GEUS, Duurt Pieter Willem ALKEMA, Giacomo Stefano ROBA, Marco ARIMONDI, Lidia TERRUZZI, Sabrina FOGLIANI
  • Patent number: 8516855
    Abstract: A method for producing an optical fiber preform. Glass soot particles are formed by jetting and combusting a gaseous glass-forming material and a fuel gas from a burner in the presence of oxygen. The glass soot particles are deposited on a deposition rod while rotating the deposition rod about its axis and reciprocating the burner in parallel to the deposition rod so as to form the preform and varying at least one of the translation velocity of the burner and the rotation velocity of the rod so as to obtain a predetermined radial soot density distribution in the preform.
    Type: Grant
    Filed: April 16, 2002
    Date of Patent: August 27, 2013
    Assignee: Prysmian Cavi E Sistemi Energia S.R.L.
    Inventors: Sabrina Fogliani, Carlo Tregambe
  • Patent number: 8322164
    Abstract: In a process for producing a low polarization mode dispersion optical fiber, which comprises the steps of drawing a glass preform into an optical fiber and of spinning, during drawing, the optical fiber about an optical fiber axis, the spinning is imparted according to a bidirectional and substantially trapezoidal spin function, which includes zones (P) of substantially constant amplitude (plateau) and zones of transition (T) where inversion of the spin direction takes place, wherein the extension (p) of the zones of substantially constant amplitude is greater than the extension (t) of the zones of transition, and the number of inversions of the direction of spin in a length of fiber of 20 m is at most two.
    Type: Grant
    Filed: August 29, 2003
    Date of Patent: December 4, 2012
    Assignee: Prysmian Cavi E Sistemi Energia S.R.L.
    Inventors: Davide Sarchi, Sabrina Fogliani, Roberto Pata
  • Publication number: 20120093470
    Abstract: An optical fiber includes a glass core and a protective coating consisting of a single coating layer disposed to surround the glass core, wherein the single coating layer is formed from a cured polymeric material obtained by curing a radiation curable composition including: (i) a radiation curable urethane(meth)acrylate oligomer, preferably including a backbone derived from polyoxytetramethylene glycol, (ii) at least one monofunctional reactive monomer, (iii) at least one multifunctional reactive monomer, and (iv) an adhesion promoter.
    Type: Application
    Filed: April 23, 2009
    Publication date: April 19, 2012
    Inventors: Lidia Terruzzi, Johannes Adrianus Van Eekelen, Sabrina Fogliani
  • Patent number: 7764855
    Abstract: An optical fiber having: a) a glass portion; and b) at least one protective coating layer disposed to surround the glass portion, the protective coating layer having a modulus of elasticity value between ?40° C. and +60° C. between 5 MPa and 600 MPa, preferably not higher than 500 MPa, more preferably not higher than 450 MPa and much more preferably not higher than 300. Preferably the protective coating layer is a single protective coating layer which is disposed in contact with the glass portion.
    Type: Grant
    Filed: October 7, 2002
    Date of Patent: July 27, 2010
    Assignee: Prysmian Cavi e Sistemi Energia S.R.L.
    Inventors: Giacomo Stefano Roba, Lidia Terruzzi, Sabrina Fogliani, Luca Castellani, Emiliano Resmini, Raffaella Donetti, Lisa Grassi
  • Publication number: 20090080851
    Abstract: The present invention relates to a radiation curable coating composition comprising a radiation curable oligomer comprising a backbone derived from polypropylene glycol and a dimer acid based polyester polyol, wherein said coating composition, when cured, is having: a) a hardening temperature (Th) of from ?10° C. to about ?20° C. and a modulus measured at said Th of lower than 5.0 MPa; or b) a hardening temperature (Th) of from ?20° C. to about ?30° C. and a modulus measured at said Th of lower than 20.0 MPa; or c) a hardening temperature (Th) of lower than about ?30° C. and a modulus measured at said Th of lower than 70.0 MPa.
    Type: Application
    Filed: November 12, 2008
    Publication date: March 26, 2009
    Applicant: DSM IP ASSETS B.V.,
    Inventors: Sandra Joanna Nagelvoort, Johannes Adrianus Van Eekelen, Adrianus Gijsbertus Maria Abel, Gouke Dirk-Jan Geus, Duurt Pieter Willem Alkema, Giacomo Stefano Roba, Marco Arimondi, Lidia Terruzzi, Sabrina Fogliani
  • Publication number: 20080022725
    Abstract: In a process for producing a low polarization mode dispersion optical fiber, which comprises the steps of drawing a glass preform into an optical fiber and of spinning, during drawing, the optical fiber about an optical fiber axis, the spinning is imparted according to a bidirectional and substantially trapezoidal spin function, which includes zones (P) of substantially constant amplitude (plateau) and zones of transition (T) where inversion of the spin direction takes place, wherein the extension (p) of the zones of substantially constant amplitude is greater than the extension (t) of the zones of transition, and the number of inversions of the direction of spin in a length of fiber of 20 m is at most two.
    Type: Application
    Filed: August 29, 2003
    Publication date: January 31, 2008
    Applicant: PIRELLI & C. S.P.A.
    Inventors: Davide Sarchi, Sabrina Fogliani, Roberto Pata
  • Patent number: 7317858
    Abstract: An optical fiber having an internal glass portion, a first coating layer surrounding the glass portion and a second coating layer surrounding the first coating layer. The first coating layer is formed from a cured polymeric material obtained by curing a radiation curable composition having a radiation curable oligomer having a backbone derived from polypropylene glycol and a dimer acid based polyester polyol. The cured polymeric material has: (a) a hardening temperature (Th) from ?10° C. to about ?20° C. and a modulus measured at the Th lower than 5.0 MPa; or (b) a hardening temperature (Th) from ?20° C. to about ?30° C. and a modulus measured at the Th lower than 20.0 MPa; or (c) a hardening temperature (Th) lower than about ?30° C. and a modulus measured at the Th lower than 70.0 MPa.
    Type: Grant
    Filed: April 24, 2002
    Date of Patent: January 8, 2008
    Assignee: Prysmian Cavi E Sistemi Energia S.R.L.
    Inventors: Giacomo Stefano Roba, Lidia Terruzzi, Sabrina Fogliani, Marco Armondi, Sandra Joanna Nagelvoort, Johannes Adrianus Van Eekelen, Adrianus Gijsbertus Maria Abel, Gouke Dirk Jan Geus, Duurt Pieter Willem Alkema
  • Publication number: 20070263972
    Abstract: An optical fiber having: a) a glass portion; and b) at least one protective coating layer disposed to surround the glass portion, the protective coating layer having a modulus of elasticity value between ?40° C. and +60° C. between 5 MPa and 600 MPa, preferably not higher than 500 MPa, more preferably not higher than 450 MPa and much more preferably not higher than 300. Preferably the protective coating layer is a single protective coating layer which is disposed in contact with the glass portion.
    Type: Application
    Filed: October 7, 2002
    Publication date: November 15, 2007
    Inventors: Giacomo Roba, Lidia Terruzzi, Sabrina Fogliani, Luca Castellani, Emiliano Resmini, Raffaella Donetti, Lisa Grassi
  • Patent number: 7200310
    Abstract: Optical fiber capable of controlling attenuation losses caused by microbending on the signal transmitted thereby. The optical fiber comprises: a) an internal glass portion; b) a first coating layer of a first polymeric material surrounding said glass portion; and c) a second coating layer of a second polymeric material surrounding said first coating layer, wherein said first polymeric material has a hardening temperature lower than ?10° C., an equilibrium tensile modulus lower than 1.5 MPa, wherein said first coating layer has a thickness of from 18 ?m to 28 ?m and wherein said second coating layer has a thickness of from 10 ?m to 20 ?m.
    Type: Grant
    Filed: May 30, 2006
    Date of Patent: April 3, 2007
    Assignee: Prysmian Cavi e Sistemi Energia S.r.l.
    Inventors: Giacomo Stefano Roba, Lidia Terruzzi, Sabrina Fogliani, Marco Arimondi, Sandra Joanna Nagelvoort, Johannes Adrianus Van Eekelen, Adrianus Gijsbertus Maria Abel, Gouke Dirk Jan Geus, Duurt Pleter Willem Alklma
  • Patent number: 7162130
    Abstract: Optical fiber having a glass portion; at least one protective coating of thermoplastic material having at least one thermoplastic elastomer; the thermoplastic material having the following characteristics: a modulus of elasticity value at +25° C. lower than 150 MPa, preferably at least 10 Mpa, more preferably higher than 20 Mpa, and a Vicat point higher than 85° C., preferably higher than 120° C., more preferably lower than 350° C. Preferably, the coating is a single protective coating directly positioned onto the glass portion.
    Type: Grant
    Filed: October 23, 2002
    Date of Patent: January 9, 2007
    Assignee: Prysmian Cavi e Sistemi Energia S.r.l.
    Inventors: Luca Castellani, Giovanni Brandi, Mauro Maritano, Franco Peruzzotti, Giacomo Stefano Roba, Sabrina Fogliani, Lidia Terruzzi
  • Publication number: 20060228083
    Abstract: Optical fiber capable of controlling attenuation losses caused by microbending on the signal transmitted thereby. The optical fiber comprises: a) an internal glass portion; b) a first coating layer of a first polymeric material surrounding said glass portion; and c) a second coating layer of a second polymeric material surrounding said first coating layer, wherein said first polymeric material has a hardening temperature lower than ?10° C., an equilibrium tensile modulus lower than 1.5 MPa, wherein said first coating layer has a thickness of from 18 ?m to 28 ?m and wherein said second coating layer has a thickness of from 10 ?m to 20 ?m.
    Type: Application
    Filed: May 30, 2006
    Publication date: October 12, 2006
    Inventors: Giacomo Roba, Lidia Terruzzi, Sabrina Fogliani, Marco Arimondi, Sandra Nagelvoort, Johannes Van Eekelen, Adrianus Abel, Gouke Geus, Duurt Alklma
  • Patent number: 7085466
    Abstract: A method for controlling attenuation losses caused by microbending on the signal transmitted by an optical fiber having an internal glass portion. A first coating layer of a first polymeric material surrounds the glass portion and a second coating layer of a second polymeric material surrounds the first coating layer. The first polymeric material has a hardening temperature lower than 10° and an equilibrium modulus lower than 1.5 MPa.
    Type: Grant
    Filed: April 24, 2002
    Date of Patent: August 1, 2006
    Assignee: Pirelli & C. SPA
    Inventors: Giacomo Stefano Roba, Lidia Terruzzi, Sabrina Fogliani, Marco Arimondi, Sandra Joanna Nagelvoort, Johannes Adrianus Van Eekelen, Adrianus Gijsbertus Maria Abel, Gouke Dirk Jan Geus, Duurt Pleter Willem Alkema
  • Publication number: 20060127019
    Abstract: Optical fiber having a glass portion; at least one protective coating of thermoplastic material having at least one thermoplastic elastomer; the thermoplastic material having the following characteristics: a modulus of elasticity value at +25° C. lower than 150 MPa, preferably at least 10 Mpa, more preferably higher than 20 Mpa, and a Vicat point higher than 85° C., preferably higher than 120° C., more preferably lower than 350° C. Preferably, the coating is a single protective coating directly positioned onto the glass portion.
    Type: Application
    Filed: October 23, 2002
    Publication date: June 15, 2006
    Inventors: Luca Castellani, Giovanni Brandi, Mauro Maritano, Franco Peruzzotti, Giacomo Roba, Sabrina Fogliani, Lidia Terruzzi
  • Publication number: 20060072889
    Abstract: An optical fiber having an internal glass portion, a first coating layer surrounding the glass portion and a second coating layer surrounding the first coating layer. The first coating layer is formed from a cured polymeric material obtained by curing a radiation curable composition having a radiation curable oligomer having a backbone derived from polypropylene glycol and a dimer acid based polyester polyol. The cured polymeric material has: (a) a hardening temperature (Th) from ?10° C. to about ?20° C. and a modulus measured at the Th lower than 5.0 MPa; or (b) a hardening temperature (Th) from ?20° C. to about ?30° C. and a modulus measured at the Th lower than 20.0 MPa; or (c) a hardening temperature (Th) lower than about ?30° C. and a modulus measured at the Th lower than 70.0 MPa.
    Type: Application
    Filed: April 24, 2002
    Publication date: April 6, 2006
    Inventors: Giacomo Roba, Lidia Terruzzi, Sabrina Fogliani, Marco Armondi, Sandra Nagelvoort, Johannes Van Eekelen, Adrianus Abel, Gouke Geus, Duurt Alkema
  • Publication number: 20050226582
    Abstract: The present invention relates to a radiation curable coating composition comprising a radiation curable oligomer comprising a backbone derived from polypropylene glycol and a dimer acid based polyester polyol, wherein said coating composition, when cured, is having: a) a hardening temperature (Th) of from ?10° C. to about ?20° C. and a modulus measured at said Th of lower than 5.0 MPa; or b) a hardening temperature (Th) of from ?20° C. to about ?30° C. and a modulus measured at said Th of lower than 20.0 MPa; or c) a hardening temperature (Th) of lower than about ?30° C. and a modulus measured at said Th of lower than 70.0 MPa.
    Type: Application
    Filed: April 24, 2002
    Publication date: October 13, 2005
    Inventors: Sandra Nagelvoort, Johannes Van Eekelen, Adrianus Abel, Gouke Geus, Duurt Alkema, Giacomo Roba, Marco Arimondi, Lidia Terruzzi, Sabrina Fogliani
  • Publication number: 20050207715
    Abstract: A method for controlling attenuation losses caused by microbending on the signal transmitted by an optical fiber having an internal glass portion. A first coating layer of a first polymeric material surrounds the glass portion and a second coating layer of a second polymeric material surrounds the first coating layer. The first polymeric material has a hardening temperature lower than 10° and an equilibrium modulus lower than 1.5 MPa.
    Type: Application
    Filed: April 24, 2002
    Publication date: September 22, 2005
    Inventors: Giacomo Roba, Lidia Terruzzi, Sabrina Fogliani, Marco Arimondi, Sandra Nagelvoort, Johannes Van Eekelen, Adrianus Abel, Gouke Geus, Duurt Alklma
  • Patent number: 6672110
    Abstract: A method for manufacturing a glass preform includes supplying a first gaseous or vapor phase composition to a reaction chamber; supplying water as a second gaseous or vapor phase composition to the reaction chamber; reacting the water and the first gaseous or vapor phase composition to form an aerosol of glass particles; directing the aerosol along the reaction chamber, out of the reaction chamber, and toward a target; and depositing glass particles of the aerosol onto the target. The first gaseous or vapor phase composition is disposed to provide a hydrolyzable glass precursor. Walls of the reaction chamber have a temperature gradient in which a temperature of the walls increases in a direction of flow of the aerosol along the reaction chamber. Alternatively, a flow of the aerosol along the reaction chamber has a temperature gradient in which a temperature of the aerosol increases in the direction of flow.
    Type: Grant
    Filed: December 16, 1999
    Date of Patent: January 6, 2004
    Assignee: Pirelli Cavi E Sistemi S.p.A.
    Inventors: Giacomo Stefano Roba, Marco Arimondi, Donata Piccolo, Sabrina Fogliani
  • Publication number: 20030029204
    Abstract: The present invention relates to a method and apparatus for fabricating a glass preform used in the manufacture of optical waveguides. The method utilizes a gas phase hydrolysis of a silica precursor without using a carrier gas. The flow of the reactants in the reaction chamber is confined and deposited on the target preform by careful control of the thermal profile in the system.
    Type: Application
    Filed: December 16, 1999
    Publication date: February 13, 2003
    Inventors: GIACOMO STEFANO ROBA, MONZA, MARCO ARIMONDI, DONATA PICCOLO, SABRINA FOGLIANI, SEGRATE