Patents by Inventor James Neal Singletary
James Neal Singletary 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: 20200305239Abstract: A puncture-resistant, electrically-energized sheet heater comprises a conductive polymeric film laminated between a top puncture-resistant, polymeric protective layer and a bottom backing layer that may comprise an insulated backing layer of extruded polystyrene closed-cell foam board. The heater is appointed to be placed beneath, or embedded in, a pavement material, and energized to provide heat to remove frozen precipitation from the pavement, or prevent it from accumulating thereon.Type: ApplicationFiled: March 20, 2020Publication date: September 24, 2020Inventors: Wei Wu, GREGORY SCOTT BLACKMAN, Stephane Costeux, James Neal Singletary
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Patent number: 10773488Abstract: A non-fibrous oriented polyethylene monolayer comprising ultra high molecular weight polyethylene, the polyethylene having a viscosity-average molecular weight of 2,000,000 or greater, wherein (i) the monolayer has a width of 10.0 mm or greater and a modulus of at least 100 N/tex, (ii) the monolayer has a tan ? when measured in dynamic mechanical analysis (DMA) of tensile response in a frequency sweep between 0.1 Hz?f?1.0 Hz meeting the inequality of tan ?<1/(f×a)+b?(f×c) where a=120, b=0.045 and c=0.016, and (iii) the monolayer has a maximum areal weight of no greater than 45 gsm.Type: GrantFiled: November 29, 2017Date of Patent: September 15, 2020Assignee: DUPONT SAFETY & CONSTRUCTION, INC.Inventors: Kenneth C Harding, James Neal Singletary
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Publication number: 20190375202Abstract: A fabric comprises a highly drawn UHMWPE non-filamentary sheet having a width of at least 10 mm and a plurality of impalements wherein one impalement is separated from the next impalement by a distance of at least 1 mm. The fabric may further comprise a plurality of said sheets wherein each sheet is stacked one on top of the other.Type: ApplicationFiled: March 14, 2019Publication date: December 12, 2019Inventor: JAMES NEAL SINGLETARY
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Publication number: 20190375201Abstract: A fabric comprises a highly drawn UHMWPE non-filamentary sheet having a width of at least 10 mm and a plurality of impalements wherein one impalement is separated from the next impalement by a distance of at least 1 mm. The fabric may further comprise a plurality of said sheets wherein each sheet is stacked one on top of the other.Type: ApplicationFiled: June 6, 2018Publication date: December 12, 2019Inventor: James Neal Singletary
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Publication number: 20190160782Abstract: A non-fibrous oriented polyethylene monolayer comprising ultra high molecular weight polyethylene, the polyethylene having a viscosity-average molecular weight of 2,000,000 or greater, wherein (i) the monolayer has a width of 10.0 mm or greater and a modulus of at least 100 N/tex, (ii) the monolayer has a tan ? when measured in dynamic mechanical analysis (DMA) of tensile response in a frequency sweep between 0.1 Hz?f?1.0 Hz meeting the inequality of tan ?<1/(f×a)+b?(f×c) where a=120, b=0.045 and c=0.016, and (iii) the monolayer has a maximum areal weight of no greater than 45 gsm.Type: ApplicationFiled: November 29, 2017Publication date: May 30, 2019Inventors: KENNETH C. HARDING, JAMES NEAL SINGLETARY
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Patent number: 10247522Abstract: An unconsolidated impact and penetration resistant laminate comprises a plurality of cross-plied sheets, each cross-plied sheet further comprising (i) first and second layers of fibrous or non-fibrous ultra-high molecular weight polyethylene and (ii) first and second layers of thermoplastic adhesive, each adhesive layer having a basis weight of no greater than 5 gsm, wherein (a) the layers of polyethylene and thermoplastic adhesive alternate within the sheet, (b) at least 50 percent of the polyethylene layers are arranged such that the orientation of the first polyethylene layer is offset with respect to the orientation of the second polyethylene layer, and (c) the plurality of cross-plied sheets form a stack that, when subjected to compaction at a pressure of 255 bar and a temperature of 132 degrees C., will not suffer a pressure loss greater than 8 bar within the first two minutes as measured by Test Method B.Type: GrantFiled: April 20, 2016Date of Patent: April 2, 2019Assignee: E I DU PONT DE NEMOURS AND COMPANYInventors: James Neal Singletary, Leopoldo Alejandro Carbajal, William George Kampert, Timothy A Libert, Bryan Benedict Sauer, Kenneth C Harding
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Publication number: 20180245885Abstract: An impact penetration resistant laminate comprises a plurality of alternating layers of (i) non-fibrous ultra-high molecular weight polyethylene monolayers and (ii) a thermoplastic adhesive, the adhesive having a basis weight of no greater than 5 gsm and a zero-shear-rate viscosity, determined from an oscillating disc rheometer in a frequency sweep between 0.1 rad/s and 100 rad/s, conducted per ASTM D 4440 at 125° C., and calculated from fitting to a Carrea-Yasuda four parameter model, of at least 1500 Pa-s, wherein (a) at least 90 percent of the monolayers are arranged such that the orientation of one monolayer is offset with respect to the orientation of an adjacent monolayer, and (b) the modulus of elasticity through the thickness of the laminate is at least 3 GPa.Type: ApplicationFiled: January 31, 2018Publication date: August 30, 2018Inventors: JAMES NEAL SINGLETARY, Leopoldo Alejandro Carbajal, William George Kampert, Timothy A. Libert, Bryan Benedict Sauer
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Patent number: 9982967Abstract: An impact penetration resistant laminate comprises a plurality of alternating layers of (i) non-fibrous ultra-high molecular weight polyethylene monolayers and (ii) a thermoplastic adhesive, the adhesive having a basis weight of no greater than 5 gsm and a zero-shear-rate viscosity, determined from an oscillating disc rheometer in a frequency sweep between 0.1 rad/s and 100 rad/s, conducted per ASTM D 4440 at 125° C., and calculated from fitting to a Carrea-Yasuda four parameter model, of at least 1500 Pa-s, wherein (a) at least 90 percent of the monolayers are arranged such that the orientation of one monolayer is offset with respect to the orientation of an adjacent monolayer, and (b) the modulus of elasticity through the thickness of the laminate is at least 3 GPa.Type: GrantFiled: May 12, 2015Date of Patent: May 29, 2018Assignee: E I DU PONT DE NEMOURS AND COMPANYInventors: James Neal Singletary, Leopoldo Alejandro Carbajal, William George Kampert, Timothy A Libert, Bryan Benedict Sauer
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Publication number: 20170373360Abstract: This invention is related to articles containing a heat source and a heat spreader to conduct heat from the heat source. The heat spreader comprises a core of one or more drawn UHMWPE sheets. The sheets are planar, i.e., have dimensions in two directions that are considerably greater than that of the third dimension. No solvent is used during the drawing process. The draw ratio is typically 100 to 150. The density of a sheet is less than 0.90 g/cm3. A sheet has good thermal conductivity k? the direction of the draw. k? is at least 30 W/mK. The thermal conductivity perpendicular to the plane of the sheet k? is greatly reduced. k? is less than. 0.20 W/mK.Type: ApplicationFiled: May 23, 2017Publication date: December 28, 2017Inventors: Stephen E. Burkhardt, Owen C. Compton, Thomas D. Lantzer, Jeffrey Scott Meth, James Neal Singletary
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Publication number: 20160265882Abstract: An impact penetration resistant laminate comprises a plurality of alternating layers of (i) non-fibrous ultra-high molecular weight polyethylene monolayers and (ii) a thermoplastic adhesive, the adhesive having a basis weight of no greater than 5 gsm and a zero-shear-rate viscosity, determined from an oscillating disc rheometer in a frequency sweep between 0.1 rad/s and 100 rad/s, conducted per ASTM D 4440 at 125° C., and calculated from fitting to a Carrea-Yasuda four parameter model, of at least 1500 Pa-s, wherein (a) at least 90 percent of the monolayers are arranged such that the orientation of one monolayer is offset with respect to the orientation of an adjacent monolayer, and (b) the modulus of elasticity through the thickness of the laminate is at least 3 GPa.Type: ApplicationFiled: May 12, 2015Publication date: September 15, 2016Inventors: James Neal SINGLETARY, Leopoldo Alejandro CARBAJAL, William George KAMPERT, Timothy A. LIBERT, Bryan Benedict SAUER
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Publication number: 20160243790Abstract: An unconsolidated impact and penetration resistant laminate comprises a plurality of cross-plied sheets, each cross-plied sheet further comprising (i) first and second layers of fibrous or non-fibrous ultra-high molecular weight polyethylene and (ii) first and second layers of thermoplastic adhesive, each adhesive layer having a basis weight of no greater than 5 gsm, wherein (a) the layers of polyethylene and thermoplastic adhesive alternate within the sheet, (b) at least 50 percent of the polyethylene layers are arranged such that the orientation of the first polyethylene layer is offset with respect to the orientation of the second polyethylene layer, and (c) the plurality of cross-plied sheets form a stack that, when subjected to compaction at a pressure of 255 bar and a temperature of 132 degrees C., will not suffer a pressure loss greater than 8 bar within the first two minutes as measured by Test Method B.Type: ApplicationFiled: April 20, 2016Publication date: August 25, 2016Inventors: James Neal Singletary, Leopoldo Alejandro Carbajal, William George Kampert, Timothy A. Libert, Bryan Benedict Sauer, Kenneth C. Harding
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Publication number: 20160236450Abstract: An impact penetration resistant laminate comprises a plurality of alternating layers of (i) non-fibrous ultra-high molecular weight polyethylene monolayers and (ii) a thermoplastic adhesive, the adhesive having a basis weight of no greater than 5 gsm and a zero-shear-rate viscosity, determined from an oscillating disc rheometer in a frequency sweep between 0.1 rad/s and 100 rad/s, conducted per ASTM D 4440 at 125° C., and calculated from fitting to a Carrea-Yasuda four parameter model, of at least 1500 Pa-s, wherein (a) at least 90 percent of the monolayers are arranged such that the orientation of one monolayer is offset with respect to the orientation of an adjacent monolayer, and (b) the modulus of elasticity through the thickness of the laminate, as measured by Test Method A, is at least 3 GPa.Type: ApplicationFiled: February 18, 2015Publication date: August 18, 2016Inventor: JAMES NEAL SINGLETARY
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Publication number: 20080146108Abstract: This invention relates to a coated fabric and a method of making the same, and laminates and articles comprising the coated fabric. The fabric comprises a woven substrate having fiber volume fraction of at least 70 percent and non-meltable, rigid rod, high strength filaments having angular cross sections created by densifying the woven substrate. The coated fabrics and laminates are especially useful in rigid armor applications.Type: ApplicationFiled: December 18, 2006Publication date: June 19, 2008Inventors: James Neal Singletary, Dariusz Wlodzimierz Kawka, James Carson Swann