Patents by Inventor David Skelhorn
David Skelhorn 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: 20170233553Abstract: A functional filler composition for use with a vinyl chloride polymeric resin may include a treated alkali earth metal carbonate and a humectant. A method of forming a filled vinyl chloride-based polymer article may include mixing a vinyl chloride-based polymeric resin with a filler composition and forming a polymer article from the mixture. The filler composition comprising a treated alkali earth metal carbonate and a humectant. A surface treatment of the treated alkali earth metal carbonate includes at least a monolayer concentration of the surface treatment.Type: ApplicationFiled: October 21, 2015Publication date: August 17, 2017Inventors: Douglas WICKS, David ANSTINE, Christopher PAYNTER, David TAYLOR, Eric ERNST, David SKELHORN
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Patent number: 9447531Abstract: Described herein are spunlaid fibers including at least one polymeric resin and at least one filler having an average particle size of less than or equal to about 5 microns and/or having a top cut of less than about 15 microns. The at least one filler may be present in an amount of less than about 40% by weight, relative to the total weight of the spunlaid fibers. Also described herein is a method for producing spunlaid fibers including adding calcium carbonate to at least one polymeric resin and extruding the resulting mixture. Further described herein are nonwoven fabrics including such spunlaid fibers, and methods for producing them.Type: GrantFiled: August 14, 2013Date of Patent: September 20, 2016Assignee: Imerys Pigments, Inc.Inventors: Larry H. McAmish, David A. Skelhorn
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Patent number: 9346964Abstract: A water-based paint composition may include at least one mineral treated with at least one hydrophobizing agent. The at least one mineral may include at least one of clay, kaolin, mica, titanium dioxide, talc, natural or synthetic silica or silicates, feldspars, nepheline syenite, talc, wollastonite, diatomite, barite, glass, and calcium carbonate. The at least one hydrophobizing agent may include at least one of fatty acids, fatty amines, and silanes. A method of making water-based paint may include treating at least one mineral with a hydrophobizing agent, and combining the at least one treated mineral with a binder.Type: GrantFiled: March 3, 2011Date of Patent: May 24, 2016Assignee: Imerys Kaolin, Inc.Inventors: Stephen Raper, David Skelhorn
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Publication number: 20140070443Abstract: Described herein are spunlaid fibers including at least one polymeric resin and at least one filler having an average particle size of less than or equal to about 5 microns and/or having a top cut of less than about 15 microns. The at least one filler may be present in an amount of less than about 40% by weight, relative to the total weight of the spunlaid fibers. Also described herein is a method for producing spunlaid fibers including adding calcium carbonate to at least one polymeric resin and extruding the resulting mixture. Further described herein are nonwoven fabrics including such spunlaid fibers, and methods for producing them.Type: ApplicationFiled: August 14, 2013Publication date: March 13, 2014Applicant: Imerys Pigments, Inc.Inventors: Larry H. McAmish, David A. Skelhorn
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Publication number: 20130000518Abstract: A water-based paint composition may include at least one mineral treated with at least one hydrophobizing agent. The at least one mineral may include at least one of clay, kaolin, mica, titanium dioxide, talc, natural or synthetic silica or silicates, feldspars, nepheline syenite, talc, wollastonite, diatomite, barite, glass, and calcium carbonate. The at least one hydrophobizing agent may include at least one of fatty acids, fatty amines, and silanes. A method of making water-based paint may include treating at least one mineral with a hydrophobizing agent, and combining the at least one treated mineral with a binder.Type: ApplicationFiled: March 3, 2011Publication date: January 3, 2013Applicant: Imerys Kaolin, Inc.Inventors: Stephen Raper, David Skelhorn
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Patent number: 8287998Abstract: A composition for a Coating System (paint) which forms an insulating material being designed to both reflect infrared radiation and have reduced thermal conductivity. The coating system may be either a single Thermal Coating or may be a Thermal Coating used in combination with a Thermal Primer. The Thermal Coating is formulated using conventional techniques and a resin used in paint manufacture, but utilizes primary pigments and extender mineral pigments which preferentially reflect in the infra red area of the solar spectrum. A method of characterizing particulate materials for their infra red reflectivity is described, which provides a means for preferential selection of particulate additives based on their relative visible light and infrared reflectivity. Additionally the incorporation of hollow micro-spheres is desired to reduce thermal conductivity.Type: GrantFiled: November 15, 2004Date of Patent: October 16, 2012Inventor: Anthony David Skelhorn
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Publication number: 20120238175Abstract: Disclosed herein are spunlaid fibers comprising at least one polymeric resin and at least one filler having an average particle size of less than or equal to about 5 microns and/or having a top cut of less than about 15 microns, wherein the at least one filler is present in an amount of less than about 40% by weight, relative to the total weight of the spunlaid fibers. Also disclosed herein is a method for producing spunlaid fibers comprising adding calcium carbonate to at least one polymeric resin and extruding the resulting mixture. Further disclosed herein are nonwoven fabrics comprising such spunlaid fibers and methods for producing them.Type: ApplicationFiled: April 30, 2012Publication date: September 20, 2012Inventors: Larry H. McAmish, David A. Skelhorn
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Publication number: 20100184348Abstract: Disclosed herein, in one embodiment, are spunlaid fibers comprising at least one polymeric resin and at least one filler having an average particle size of less than or equal to about 5 microns and/or having a top cut of less than about 15 microns, wherein the at least one filler is present in an amount of less than about 40% by weight, relative to the total weight of the spunlaid fibers. Also disclosed herein is a method for producing spunlaid fibers comprising adding calcium carbonate to at least one polymeric resin and extruding the resulting mixture. Further disclosed herein are nonwoven fabrics comprising such spunlaid fibers and methods for producing them.Type: ApplicationFiled: February 14, 2008Publication date: July 22, 2010Applicant: IMERYS PIGMENTS, INC.Inventors: Larry H. McAmish, David A. Skelhorn
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Patent number: 6569527Abstract: A method of producing a breathable film which comprises the steps of: (a) producing an inorganic filler by treating particles of an inorganic particulate material comprising an alkaline earth metal carbonate compound by reaction with a hydrophobising surface treatment agent comprising one or more aliphatic carboxylic acids having at least 10 chain carbon atoms to produce a hydrophobic coating on the particles under conditions such that the inorganic filler produced has a total surface moisture level comprising moisture adsorbed on the particles and trapped within the hydrophobic coating thereon of not greater than 0.1% by weight based on the dry weight of the inorganic particulate material; (b) producing a filled thermoplastic composition by mixing the inorganic filler produced in step (a) with a heated thermoplastic polymer; and (c) shaping the composition produced in step (b) by heat processing to form a film product.Type: GrantFiled: October 10, 2000Date of Patent: May 27, 2003Assignee: Imerys Minerals, LimitedInventors: Allison Anne Calhoun, Dickey S. Shurling, David A. Skelhorn, Deeba Marjan Ansari
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Patent number: 6323269Abstract: A mineral containing thermoplastic granule for incorporation in a thermoplastic material to produce a thermoplastic end product, the granule comprising at least 50% by weight of an inorganic particulate material, at least 0.1% by weight of an additive comprising a blowing agent, and the balance comprising a thermoplastic binder.Type: GrantFiled: April 24, 1998Date of Patent: November 27, 2001Assignee: Imerys Pigments, Inc.Inventors: David A. Skelhorn, Allison R Calhoun
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Patent number: 6153670Abstract: A granule containing a high proportion of a mineral filler and a colorant pigment system in a thermoplastic binder, for blending with an end product thermoplastic in which the mineral filler and the colorant pigment is to be dispersed. The granule comprises 85% to 92% by weight of the granule of mineral particles, which is coated with one or more fatty acids having a carbon chain length of from 12 to 20 carbon atoms and the colorant pigment. The colorant pigment may be inorganic or organic or a mixture thereof. The balance of the granule by weight comprises a thermoplastic polymeric binder. The particle size distribution of both the mineral and the colorant particles is in accordance with the optimum particle packing equation to optimize packing of the particles in the granule. The ratio of mineral to colorant pigment to binder may be about 75:15:10 or about 0.1:89.9:10. The invention includes a granule with only a colorant pigment system.Type: GrantFiled: April 2, 1998Date of Patent: November 28, 2000Assignee: Imerys Pigments, Inc.Inventor: David A. Skelhorn
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Patent number: 5744530Abstract: A thermoplastic granule containing a high proportion of a particulate carbonate filler in a thermoplastic binder, for blending with an end product thermoplastic in which the carbonate filler is to be dispersed. The granule comprises at least 85% by weight of a particulate carbonate which is coated with one or more fatty acids having a carbon chain length of from 12 to 20 carbon atoms. The balance of the granule by weight comprises a thermoplastic polymeric binder which is solid at ambient temperature and is compatible with the end product thermoplastic in which the carbonate filler is to be dispersed. The polymeric binder is an amorphous polyolefins and/or a highly branched polyethylene wax. The PSD of the carbonate is selected to maximize packing.Type: GrantFiled: April 25, 1996Date of Patent: April 28, 1998Assignee: ECC International Inc.Inventor: David A. Skelhorn