Patents by Inventor Raul Marcelino PEREZ GRATEROL
Raul Marcelino PEREZ GRATEROL 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).
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Publication number: 20230191666Abstract: The invention relates to a process for producing a ballistic-resistant curved molded article said process comprising forming a stack of a plurality of composite sheets, pressing the stack comprising the composite sheets at a temperature of between 80° C. to 150° C. and a pressure of between 10 and 400 bar for at least 5 minutes to obtain a curved molded article, cooling the compacted stack to a temperature below 80° C. while maintaining the pressure above 10 bar, releasing the pressure from the cooled curved molded article; wherein the composite sheets comprise unidirectionally aligned high tenacity polyethylene fibers and a matrix comprising a polyethylene resin being a homopolymer or copolymer of ethylene having a density of between 870 to 980 kg/m3 when measured according to ISO1183 and a melt flow index of between 0.5 and 50 g/10 min when measured according to ASTM 1238B-13 at a temperature of 190° C. and a weight of 21.6 kg.Type: ApplicationFiled: December 14, 2018Publication date: June 22, 2023Inventors: Johann VAN ELBURG, Harm VAN DER WERFF, Roelof MARISSEN, Ulrich HEISSERER, Raul Marcelino PEREZ GRATEROL
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Patent number: 11661485Abstract: The invention relates to a composite sheet, and a ballistic resistant article, comprising unidirectionally aligned high performance polyethylene (HPPE) fibers and a polymeric resin, wherein said polymeric resin comprises a homopolymer or copolymer of ethylene and wherein said polymeric resin has a density as measured according to ISO1183 of between 930 and 980 kg/m3, and a peak melting temperature of from 115 to 140° C.; and said polymeric resin is present in an amount of from 5 to 25% by weight based on the total weight of the composite sheet. It further relates to a method for manufacturing a composite sheet comprising assembling HPPE fibers to a sheet, applying an aqueous suspension of a polymeric resin to the HPPE fibers, partially drying the aqueous suspension, optionally applying a temperature and/or a pressure treatment to the composite sheet.Type: GrantFiled: March 19, 2018Date of Patent: May 30, 2023Assignee: AVIENT PROTECTIVE MATERIALS B.V.Inventors: Brad Alan Dickinson, Harm Van Der Werff, Raul Marcelino Perez Graterol, Petrus Henricus Maria Elemans, Leonardus Gerardus Bernardus Bremer, Francois Antoine Maria Op Den Buijsch, Roelof Marissen
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Publication number: 20220339905Abstract: Composite sheets include at least two adjacent fibrous monolayers of unidirectionally aligned high tenacity polyethylene fibers, whereby the direction of orientation between the polyethylene fibers of said two fibrous layers differs by at least 80° and up to 90°, the fibers having a tenacity of at least 1.5 N/tex, the fibers being in a matrix comprising a homopolymer or copolymer of ethylene and wherein the homopolymer or copolymer of ethylene has a density as measured according to ISO1183 of between 870 to 980 kg/m3. The composite sheets have an areal density of between 50 and 500 g/m2, wherein the composite sheets have an areal density normalized in-plane shear force measured at 25° C. evaluated according to a bias extension test method variant of ASTM D3518 of at least 0.40 N·m2·g?1 and lower than 5.0 N·m2·g?1 at 10 mm clamp displacement and an areal density normalized in-plane shear force measured at 110° C. and clamp displacement of 10 mm of at least 0.01 N·m2·g?1 and lower than 0.20 N·m2·g?1.Type: ApplicationFiled: June 30, 2022Publication date: October 27, 2022Inventors: Johann VAN ELBURG, Harm VAN DER WERFF, Roelof MARISSEN, Ulrich HEISSERER, Raul Marcelino PEREZ GRATEROL
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Patent number: 11433640Abstract: The invention relates to a composite sheet comprising at least two adjacent fibrous monolayers of unidirectionally aligned high tenacity polyethylene fibers, whereby the direction of orientation between the polyethylene fibers of said two fibrous layers differs by at least 80° and up to 90°, the fibers having a tenacity of at least 1.5 N/tex, said fibers being in a matrix comprising a homopolymer or copolymer of ethylene and wherein said homopolymer or copolymer of ethylene has a density as measured according to IS01183 of between 870 to 980 kg/m3, said composite sheet having an areal density of between 50 and 500 g/m2 wherein the composite sheet has an areal density normalized in-plane shear force measured at 25° C. evaluated according to the bias extension test method of at least 0.40 N·m2·g-1 at 10 mm clamp displacement.Type: GrantFiled: December 17, 2018Date of Patent: September 6, 2022Assignee: DSM IP ASSETS B.V.Inventors: Johann Van Elburg, Harm Van Der Werff, Roelof Marissen, Ulrich Heisserer, Raul Marcelino Perez Graterol
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Publication number: 20210115203Abstract: The invention relates to a composite sheet, and a ballistic resistant article, comprising unidirectionally aligned high performance polyethylene (HPPE) fibers and a polymeric resin, wherein said polymeric resin comprises a homopolymer or copolymer of ethylene and wherein said polymeric resin has a density as measured according to ISO1183 of between 930 and 980 kg/m3, and a peak melting temperature of from 115 to 140° C.; and said polymeric resin is present in an amount of from 5 to 25% by weight based on the total weight of the composite sheet. It further relates to a method for manufacturing a composite sheet comprising assembling HPPE fibers to a sheet, applying an aqueous suspension of a polymeric resin to the HPPE fibers, partially drying the aqueous suspension, optionally applying a temperature and/or a pressure treatment to the composite sheet.Type: ApplicationFiled: March 19, 2018Publication date: April 22, 2021Inventors: Brad Alan DICKINSON, Harm VAN DER WERFF, Raul Marcelino PEREZ GRATEROL, Petrus Henricus Maria ELEMANS, Leonardus Gerardus Bernardus BREMER, Francois Antoine Maria OP DEN BUIJSCH, Roelof MARISSEN
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Publication number: 20210114340Abstract: The invention relates to a composite sheet comprising at least two adjacent fibrous monolayers of unidirectionally aligned high tenacity polyethylene fibers, whereby the direction of orientation between the polyethylene fibers of said two fibrous layers differs by at least 80° and up to 90°, the fibers having a tenacity of at least 1.5 N/tex, said fibers being in a matrix comprising a homopolymer or copolymer of ethylene and wherein said homopolymer or copolymer of ethylene has a density as measured according to IS01183 of between 870 to 980 kg/m3, said composite sheet having an areal density of between 50 and 500 g/m2 wherein the composite sheet has an areal density normalized in-plane shear force measured at 25° C. evaluated according to the bias extension test method of at least 0.40 N·m2·g-1 at 10 mm clamp displacement.Type: ApplicationFiled: December 17, 2018Publication date: April 22, 2021Inventors: Johann VAN ELBURG, Harm VAN DER WERFF, Roelof MARISSEN, Ulrich HEISSERER, Raul Marcelino PEREZ GRATEROL
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Patent number: 10377897Abstract: The invention relates to a laser-markable polyamide composition comprising: a first phase comprising Sb2O3 and an aliphatic polyamide with an amide density AD1, and a second phase comprising an aliphatic polyamide with an amide density AD2, wherein AD1-AD2 is at least 0.01, and wherein the amount of Sb2O3 is between 0.1 and 5 wt %, a halogen-free flame retardant in an amount of between 1 to 25 wt %, wherein the amount in weight percentage are based on the total amount of composition. The invention also relates to a process for preparing a laser-markable polyamide composition, as well as laser-marked products comprising the composition.Type: GrantFiled: May 18, 2015Date of Patent: August 13, 2019Assignee: DSM IP ASSETS B.V.Inventors: Raul Marcelino Perez Graterol, Franciscus Gerardus Henricus Van Duijnhoven, Franciscus Wilhelmus Maria Gelissen, Johannes Hoekstra
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Patent number: 9674966Abstract: Process of depositing a metallic pattern on a medium, said process comprising: generating pulsed laser beams from a pulsed laser source, wherein the laser beams have a wavelength for which the medium is substantially transparent, focussing the laser beams onto a target layer comprising inorganic particles, dispersed in a laser light degradable/combustible organic matrix, said target layer producing ejecta in response to an interaction of said laser beams and said target layer, accumulating at least a portion of said ejecta on said medium within the desired pattern, providing the pattern by electroless metal plating. The invention further relates to a transparent medium comprising a metallic pattern wherein the adhesion between the metallic pattern and the medium is at least 5N/cm.Type: GrantFiled: November 27, 2013Date of Patent: June 6, 2017Assignee: DSM IP ASSETS B.V.Inventors: Franciscus Wilhelmus Maria Gelissen, Raul Marcelino Perez Graterol
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Publication number: 20170081513Abstract: The invention relates to a laser-markable polyamide composition comprising: a first phase comprising Sb2O3 and an aliphatic polyamide with an amide density AD1, and a second phase comprising an aliphatic polyamide with an amide density AD2, wherein AD1-AD2 is at least 0.01, and wherein the amount of Sb2O3 is between 0.1 and 5 wt %, a halogen-free flame retardant in an amount of between 1 to 25 wt %, wherein the amount in weight percentage are based on the total amount of composition. The invention also relates to a process for preparing a laser-markable polyamide composition, as well as laser-marked products comprising the composition.Type: ApplicationFiled: May 18, 2015Publication date: March 23, 2017Inventors: Raul Marcelino PEREZ GRATEROL, Franciscus Gerardus Henricus VAN DUIJNHOVEN, Franciscus Wilhelmus Maria GELISSEN, Johannes HOEKSTRA
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Publication number: 20150305168Abstract: Process of depositing a metallic pattern on a medium, said process comprising: generating pulsed laser beams from a pulsed laser source, wherein the laser beams have a wavelength for which the medium is substantially transparent, focussing the laser beams onto a target layer comprising inorganic particles, dispersed in a laser light degradable/combustible organic matrix, said target layer producing ejecta in response to an interaction of said laser beams and said target layer, accumulating at least a portion of said ejecta on said medium within the desired pattern, providing the pattern by electroless metal plating. The invention further relates to a transparent medium comprising a metallic pattern wherein the adhesion between the metallic pattern and the medium is at least 5N/cm.Type: ApplicationFiled: November 27, 2013Publication date: October 22, 2015Inventors: Franciscus Wilhelmus Maria GELISSEN, Raul Marcelino PEREZ GRATEROL