Patents by Inventor Eduardo Grizante Redondo
Eduardo Grizante Redondo 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: 8901426Abstract: A flame-retardant cable includes at least one conductor and at least one coating made from a flame-retardant composition. The flame-retardant composition includes: (a) at least one crystalline propylene homopolymer or copolymer; (b) at least one copolymer of ethylene with at least one C3-C12 alpha-olefin, having a density of from 0.860 to 0.904 g/cm3 and a Molecular Weight Distribution Index not higher than 5; (c) at least one ethylene homopolymer or copolymer of ethylene with at least one C3-C12 alpha-olefin having a density of from 0.905 to 0.970 g/cm3; and (d) at least one flame-retardant filler.Type: GrantFiled: August 5, 2008Date of Patent: December 2, 2014Assignee: Prysmian S.p.A.Inventors: Eduardo Grizante Redondo, Frank Luebbe
-
Patent number: 8878066Abstract: A power transmission cable includes at least one power conductor, an insulating layer surrounding the conductor to form at least one insulated conductor, a flame-retardant halogen free protective sheath provided in a radially external position with respect to the insulated conductor, wherein the sheath has an inner and an outer layer in contact with each other, the inner layer having a thickness at least equal to a thickness of the outer layer, the inner layer including a polymer material having a glass transition temperature equal to or lower than ?30° C., and the outer layer including a mud resistant polymer material.Type: GrantFiled: December 15, 2006Date of Patent: November 4, 2014Assignee: Prysmian S.p.A.Inventors: Franco Galletti, Eduardo Grizante Redondo
-
Publication number: 20110240335Abstract: A flame-retardant cable includes at least one conductor and at least one coating made from a flame-retardant composition. The flame-retardant composition includes: (a) at least one crystalline propylene homopolymer or copolymer; (b) at least one copolymer of ethylene with at least one C3-C12 alpha-olefin, having a density of from 0.860 to 0.904 g/cm3 and a Molecular Weight Distribution Index not higher than 5; (c) at least one ethylene homopolymer or copolymer of ethylene with at least one C3-C12 alpha-olefin having a density of from 0.905 to 0.970 g/cm3; and (d) at least one flame-retardant filler.Type: ApplicationFiled: August 5, 2008Publication date: October 6, 2011Inventors: Eduardo Grizante Redondo, Frank Luebbe
-
Publication number: 20100051315Abstract: A power transmission cable comprising at least one power conductor, an insulating layer surrounding said conductor to form at least one insulated conductor, a flame-retardant halogen free protective sheath provided in a radially external position with respect to said insulated conductor, wherein said sheath has an inner and an outer layer in contact one another, said inner layer has a thickness at least equal to a thickness of said outer layer, the inner layer comprises a polymer material having a glass transition temperature equal to or lower than ?30° C., and the outer layer comprises a mud resistant polymer material.Type: ApplicationFiled: December 15, 2006Publication date: March 4, 2010Inventors: Franco Galletti, Eduardo Grizante Redondo
-
Patent number: 6924031Abstract: Self-extinguishing cable coated with a flame-retardant composition having: (a) an ethylene homopolymer or copolymer having a density of from 0.905 to 0.970 g/cm3, and being selected from: ethylene homopolymers: copolymers of ethylene with an alpha-olefin; copolymers of ethylene with an ethylenically unsaturated ester; or mixtures thereof; (b) a copolymer of ethylene with at least one alpha-olefin, and optionally with a diene, said copolymer (b) having a density of from 0.860 to 0.904 g/cm3, and having a composition distribution index greater than 45%; (c) natural magnesium hydroxide in an amount such as to impart flame-retardant properties; wherein at least one of the polymeric components (a) and (b) contains hydrolyzable organic silane groups grafted onto the polymer chain. The silane groups are preferably introduced during compounding of the flame-retardant composition by adding to the polymer mixture a suitable silane compound and a radical initiator.Type: GrantFiled: March 23, 2001Date of Patent: August 2, 2005Assignee: Pirelli Cavi e Sistemi S.p.A.Inventors: Eduardo Grizante Redondo, Franco Peruzzotti, Diego Tirelli, Enrico Albizzati
-
Patent number: 6756447Abstract: A flame-retardant polymer composition includes: (a) a crystalline propylene homopolymer or copolymer; (b) a copolymer of ethylene with at least one alpha-olefin having from 4 to 12 carbon atoms, and optionally with a diene; and (c) a flame-retardant inorganic filler. Copolymer (b) has a density of between 0.90 and 0.86 g/cm3 and a Composition Distribution Index, defined as the weight percentage of copolymer molecules having an alpha-olefin content within 50% of the average total molar content of alpha-olefin, of greater than 45%.Type: GrantFiled: March 13, 2002Date of Patent: June 29, 2004Assignee: Pierelli Cavi E Sistemi.S.p.A.Inventors: Luca Castellani, Eduardo Grizante Redondo, Antonio Zaopo, Enrico Albizzati
-
Patent number: 6552112Abstract: A flame-retardant composition includes a crystalline propylene homopolymer or copolymer, a copolymer of ethylene with at least one alpha-olefin having from 3 to 12 carbon atoms, and optionally with a diene, the copolymer of ethylene being characterized by a composition distribution index greater than 45%, the index being defined as a weight percentage of copolymer molecules having an alpha-olefin content within 50% of an average total molar content of alpha-olefin, and natural magnesium hydroxide in amounts such as to impart flame-retardant properties. A related cable with self-extinguishing properties includes a conductor and a flame-retardant coating. The flame-retardant coating includes the flame-retardant composition.Type: GrantFiled: January 21, 2000Date of Patent: April 22, 2003Assignee: Pirelli Cavi e Sistemi S.p.A.Inventors: Eduardo Grizante Redondo, Franco Peruzzotti, Diego Tirelli, Antonio Zaopo, Enrico Albizzati, Luca Castellani
-
Publication number: 20020188078Abstract: A cable, in particular for power transmission, for telecommunications or for data transmission, or also combined power/telecommunications cables, wherein at least one coating layer consists of a recyclable material which is halogen-free and has superior mechanical, electrical, and flame-retardant properties. This material consists of a polymer mixture comprising: (a) a crystalline propylene homopolymer or copolymer; and (b) a copolymer of ethylene with at least one alpha-olefin having from 4 to 12 carbon atoms, and optionally with a diene; the said copolymer (b) being characterized by a density of between 0.90 and 0.86 g/cm3 and by a Composition Distribution Index, defined as the weight percentage of copolymer molecules having an alpha-olefin content within 50% of the average total molar content of alpha-olefin, of greater than 45%. This material may also include a flame-retardant inorganic filler.Type: ApplicationFiled: March 13, 2002Publication date: December 12, 2002Applicant: PIRELLI CAVI SISTEMI S.p.A.Inventors: Luca Castellani, Eduardo Grizante Redondo, Antonio Zaopo, Enrico Albizzati
-
Patent number: 6410651Abstract: A cable, in particular for power transmission, for telecommunications or for data transmission, or also combined power/telecommunications cables, wherein at least one coating layer consists of a recyclable material which is halogen-free and has superior mechanical, electrical, and flame-retardant properties. This material consists of a polymer mixture comprising: (a) a crystalline propylene homopolymer or copolymer; and (b) a copolymer of ethylene with at least one alpha-olefin having from 4 to 12 carbon atoms, and optionally with a diene; the said copolymer (b) being characterized by a density of between 0.90 and 0.86 g/cm3 and by a Composition Distribution Index, defined as the weight percentage of copolymer molecules having an alpha-olefin content within 50% of the average total molar content of alpha-olefin, of greater than 45%. This material may also include a flame-retardant inorganic filler.Type: GrantFiled: January 21, 2000Date of Patent: June 25, 2002Assignee: Pirelli Cavi e Sistemi S.p.A.Inventors: Luca Castellani, Eduardo Grizante Redondo, Antonio Zaopo, Enrico Albizzati
-
Patent number: 6372344Abstract: A cable, in particular for power transmission, for telecommunications or for data transmission, or also combined power/telecommunications cables, wherein at least one coating layer is comprised of a recyclable material which is halogen-free and has superior mechanical and electrical properties. This material comprises a polymer mixture of a crystalline propylene homopolymer or copolymer and an elastomeric copolymer of ethylene with at least one alpha-olefin having from 3 to 12 carbon atoms, and optionally containing a diene. The copolymer is characterized by a 200% tension set value of lower than 30% (measured at 20° C. for 1 minute according to ASTM standard D 412). The cable also includes a flame-retardant polymer composition.Type: GrantFiled: January 21, 2000Date of Patent: April 16, 2002Assignee: Pirelli Cavi e Sistemi S.p.A.Inventors: Luca Castellani, Eduardo Grizante Redondo, Antonio Zaopo, Enrico Albizzati
-
Publication number: 20020001715Abstract: Self-extinguishing cable coated with a flame-retardant composition having: (a) an ethylene homopolymer or copolymer having a density of from 0.905 to 0.970 g/cm3, and being selected from: ethylene homopolymers: copolymers of ethylene with an alpha-olefin; copolymers of ethylene with an ethylenically unsaturated ester; or mixtures thereof; (b) a copolymer of ethylene with at least one alpha-olefin, and optionally with a diene, said copolymer (b) having a density of from 0.860 to 0.904 g/cm3, and having a composition distribution index greater than 45%; (c) natural magnesium hydroxide in an amount such as to impart flame-retardant properties; wherein at least one of the polymeric components (a) and (b) contains hydrolyzable organic silane groups grafted onto the polymer chain. The silane groups are preferably introduced during compounding of the flame-retardant composition by adding to the polymer mixture a suitable silane compound and a radical initiator.Type: ApplicationFiled: March 23, 2001Publication date: January 3, 2002Inventors: Eduardo Grizante Redondo, Franco Peruzzotti, Diego Tirelli, Enrico Albizzati