Patents by Inventor Richard T. Fox
Richard T. Fox 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: 20150267020Abstract: A styrenic polymer foam contains a polymer composition in the form of a continuous matrix defining multiple cells therein, the polymer composition contains a first polymer and second polymer, the first polymer being a maleic anhydride-grafted high density polyethylene and the second polymer being a styrenic polymer resin that is free of grafted maleic anhydride. The first polymer contains on average 0.05 or more weight-parts of grafted maleic anhydride based on total weight of the first polymer and the concentration of first polymer in the polymer composition is sufficient to provide at least six weight-parts of grafted maleic an hydride per million weight parts of the polymer composition.Type: ApplicationFiled: November 11, 2013Publication date: September 24, 2015Applicant: DOW GLOBAL TECHNOLOGIES LLCInventors: Kendra M. Giza, Mark A. Barger, Richard T. Fox, Suzanne M. Guerra, Brian W. Walther
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Patent number: 8785510Abstract: Prepare a closed-cell alkenyl aromatic polymer foam by an extrusion process using a blowing agent composition that contains at least 30 weight-percent of the chlorine-free hydrofluorocarbon blowing agent such that the foam has a density of 48 kilograms per cubic meter or less, contains more than 50 weight-percent styrene-acrylonitrile copolymer based on total polymer weight and at least eight weight-percent of a chlorine-free hydrofluorocarbon blowing agent that has a lower solubility in polystyrene than 1,1,2,2-tetrafluoroethane (HFC-134).Type: GrantFiled: March 13, 2008Date of Patent: July 22, 2014Assignee: Dow Global Technologies LLCInventors: Van-Chau Vo, Richard T. Fox, Warren H. Griffin, John Gordon-Duffy, Lawrence S. Hood, Roy E. Smith
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Publication number: 20130018117Abstract: Provide a foamable polymer composition containing: (i) a thermoplastic polymer matrix and a blowing agent, (a) the thermoplastic polymer matrix containing a styrene-acrylonitrile copolymer having a weight-averaged molecular weight in a range of 90,000 to 150,000 and polymerized acrylonitrile concentration in a range of five to twenty weight-percent relative to total polymer matrix weight; and (ii) a blowing agent containing water, 1,1,1,2-tetrafluouroethane and at least one of difluoromethane and 1,1-dilluoroethane; (b) cooling the foamable polymer composition to a foaming temperature; and (c) extruding the foamable polymer composition and allowing the blowing agent to expand the foamable polymer composition into a polymeric foam having an average vertical cell size in a range of 0.5 millimeters to 1.8 millimeters and a density in a range of 24 to 40 kilograms per cubic meter and a Normalized Roughness Quotient of 3.5 or less in a Milled Surface Test.Type: ApplicationFiled: December 2, 2010Publication date: January 17, 2013Inventors: Richard T. Fox, David J. Frankowski, Roy E. Smith, Simon Lee
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Patent number: 8198340Abstract: Alkenyl aromatic polymer foam comprising a polymer matrix containing one or more polymer and defining a plurality of cells having an average cell size wherein: (a) the alkenyl aromatic polymer foam has: —(i) an average cell size that is in a range of 0.02 and 5 millimeters; —(ii) a density of 64 kilograms per cubic meter or less; —(iii) an open cell content less than 30 percent; and —(iv) a cell size variation of 30% or less; and wherein the foam further comprises one or more fluorinated alkene blowing agent at a concentration of 0.03 moles or more and 0.3 moles or less per 100 grams of polymer foam.Type: GrantFiled: March 10, 2008Date of Patent: June 12, 2012Assignee: Dow Global Technologies LLCInventors: Van-Chau Vo, Richard T. Fox, Warren H. Griffin
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Publication number: 20110039064Abstract: An electrically conductive article including a substrate and at least one electrically conductive layer disposed on the substrate. The conductive layer may include a thermoplastic resin and from about 1 to 30 weight percent of at least one conductive additive based on a total weight of the thermoplastic resin and the at least one conductive additive. The conductive article may have a surface resistance between 0.001 to 20? at a test distance of 2.54 cm (1 inch).Type: ApplicationFiled: February 7, 2008Publication date: February 17, 2011Applicant: DOW GLOBAL TECHNOLOGIES INC.Inventors: Vijay Wani, Richard T. Fox
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Publication number: 20100099783Abstract: Prepare a closed-cell alkenyl aromatic polymer foam by an extrusion process using a blowing agent composition that contains at least 30 weight-percent of the chlorine-free hydrofluorocarbon blowing agent such that the foam has a density of 48 kilograms per cubic meter or less, contains more than 50 weight-percent styrene-acrylonitrile copolymer based on total polymer weight and at least eight weight-percent of a chlorine-free hydrofluorocarbon blowing agent that has a lower solubility in polystyrene than 1,1,2,2-tetrafluoroethane (HFC-134).Type: ApplicationFiled: March 13, 2008Publication date: April 22, 2010Inventors: Van-Chau Vo, Richard T. Fox, Warren H. Griffin, John Gordon-Duffy, Lawrence S. Hood, Roy E. Smith
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Publication number: 20100087555Abstract: Alkenyl aromatic polymer foam comprising a polymer matrix containing one or more polymer and defining a plurality of cells having an average cell size wherein: (a) the alkenyl aromatic polymer foam has: —(i) an average cell size that is in a range of 0.02 and 5 millimeters; —(ii) a density of 64 kilograms per cubic meter or less; —(iii) an open cell content less than 30 percent; and—(iv) a cell size variation of 30% or less; and wherein the foam further comprises one or more fluorinated alkene blowing agent at a concentration of 0.03 moles or more and 0.3 moles or less per 100 grams of polymer foam.Type: ApplicationFiled: March 10, 2008Publication date: April 8, 2010Inventors: Van-chau Vo, Richard T. Fox, Warren H. Griffin
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Publication number: 20090202829Abstract: Disclosed is a process to make a long fiber-reinforced thermoplastic concentrate wherein a continuous fiber strand is coated with an aqueous melt-kneaded thermoplastic dispersion, dried, and chopped.Type: ApplicationFiled: June 30, 2006Publication date: August 13, 2009Inventors: Richard T. Fox, Vijay Wani, Ludo M. Aerts, Robert W. Ranger, Gary D. Parsons
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Publication number: 20090075046Abstract: An improved coating composition including a polymeric component and synthetic clay. The coating composition is particularly useful for coating a polymeric substrate, such as a styrenic polymeric substrate. One particular preferred application involves coating a closed cell foam extruded styrenic polymeric insulation panel with the coating composition, thereby realizing attractive barrier properties and optical characteristics from the coating.Type: ApplicationFiled: September 5, 2008Publication date: March 19, 2009Inventors: Richard T. Fox, Huiqing Zhang, Chan Han, Michael S. Paquette, Richard F. Fibiger
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Patent number: 6936191Abstract: Disclosed is an electrically conductive thermoplastic polymer composition comprising a thermoplastic polymer and a synergistic combination of metal fibers and metal-coated fibers, structures made therefrom, and a process to make said compositions and structures.Type: GrantFiled: September 20, 2002Date of Patent: August 30, 2005Assignee: Doe Global Technologies Inc.Inventors: Richard T. Fox, Susan J. Babinec, Kevin E. Howard, Mark A. Chartier, Todd M. Clarey, Ruseell B. Peters, Jr.
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Patent number: 6896828Abstract: Disclosed is an electrically conductive thermoplastic polymer composition comprising a thermoplastic polymer, an impact modifier and a combination of metal fibers and metal-coated fibers, structures made therefrom, and a process to make said compositions and structures.Type: GrantFiled: March 14, 2003Date of Patent: May 24, 2005Assignee: Dow Global Technologies Inc.Inventors: Richard T. Fox, Vijay Wani, Michael E. Hus
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Patent number: 6815014Abstract: A process for creating plasma polymerized deposition on a substrate by a corona discharge is described. The corona discharge is created between an electrode and a counterelectrode supporting a substrate. A mixture of a balance gas and a working gas is flowed rapidly through the electrode, plasma polymerized by corona discharge, and deposited onto the substrate as an optically clear coating or to create surface modification. The process, which is preferably carried out at or near atmospheric pressure, can be designed to create an optically clear powder-free or virtually powder free deposit of polymerized plasma that provides a substrate with properties such as surface modification, chemical resistance, and barrier to gases.Type: GrantFiled: February 3, 2003Date of Patent: November 9, 2004Assignee: Dow Global Technologies Inc.Inventors: Aaron M. Gabelnick, Richard T. Fox, Ing-Feng Hu, Dmitry P. Dinega
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Publication number: 20040091637Abstract: A process for creating plasma polymerized deposition on a substrate by a corona discharge is described. The corona discharge is created between an electrode and a counterelectrode supporting a substrate. A mixture of a balance gas and a working gas is flowed rapidly through the electrode, plasma polymerized by corona discharge, and deposited onto the substrate as an optically clear coating or to create surface modification. The process, which is preferably carried out at or near atmospheric pressure, can be designed to create an optically clear powder-free or virtually powder free deposit of polymerized plasma that provides a substrate with properties such as surface modification, chemical resistance, and barrier to gases.Type: ApplicationFiled: February 3, 2003Publication date: May 13, 2004Inventors: Aaron M. Gabelnick, Richard T. Fox, Ing-Feng Hu, Dmitry P. Dinega
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Patent number: 6630247Abstract: A ceramic-metal composite that is tough and stiff has been prepared and is comprised of an inert ceramic (e.g., alumina) embedded and dispersed in a matrix comprised of a metal (e.g., aluminum), a reactive ceramic (e.g., boron carbide) and a reactive ceramic-metal reaction product (e.g., AlB2, Al4BC, Al3B48C2, AlB12, Al4C3, AlB24C4 or mixtures thereof) wherein grains of the inert ceramic have an average grain size greater than or equal to the average grain size of grains of the reactive ceramic. The ceramic-metal composite may be prepared by forming a mixture comprised of an inert ceramic powder (e.g., alumina) and a reactive ceramic powder (e.g., boron carbide), the inert ceramic powder having an average particle size equal to or greater than the average particle size of the reactive ceramic powder, forming the mixture into a porous body and consolidating the porous body in the presence of a metal (e.g., aluminum) to form the ceramic-metal composite.Type: GrantFiled: August 3, 2001Date of Patent: October 7, 2003Assignee: Dow Global Technologies Inc.Inventors: Richard T. Fox, Chan Han, Aleksander J. Pyzik
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Publication number: 20030173550Abstract: Disclosed is an electrically conductive thermoplastic polymer composition comprising a thermoplastic polymer, an impact modifier and a combination of metal fibers and metal-coated fibers, structures made therefrom, and a process to make said compositions and structures.Type: ApplicationFiled: March 14, 2003Publication date: September 18, 2003Inventors: Richard T. Fox, Vijay Wani, Michael E. Hus
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Publication number: 20030089892Abstract: Disclosed is an electrically conductive thermoplastic polymer composition comprising a thermoplastic polymer and a synergistic combination of metal fibers and metal-coated fibers, structures made therefrom, and a process to make said compositions and structures.Type: ApplicationFiled: September 20, 2002Publication date: May 15, 2003Inventors: Richard T. Fox, Susan Babinec, Kevin E. Howard, Mark A. Chartier
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Patent number: 6296045Abstract: A ceramic-metal composite that is tough and stiff has been prepared and is comprised of an inert ceramic (e.g., alumina) embedded and dispersed in a matrix comprised of a metal (e.g., aluminum), a reactive ceramic (e.g., boron carbide) and a reactive ceramic-metal reaction product (e.g., AlB2, Al4BC, Al3B48C2, AlB12, Al4C3, AlB24C4 or mixtures thereof) wherein grains of the inert ceramic have an average grain size greater than or equal to the average grain size of grains of the reactive ceramic. The ceramic-metal composite may be prepared by forming a mixture comprised of an inert ceramic powder (e.g., alumina) and a reactive ceramic powder (e.g., boron carbide), the inert ceramic powder having an average particle size equal to or greater than the average particle size of the reactive ceramic powder, forming the mixture into a porous body and consolidating the porous body in the presence of a metal (e.g., aluminum) to form the ceramic-metal composite.Type: GrantFiled: August 12, 1998Date of Patent: October 2, 2001Assignee: The Dow Chemical CompanyInventors: Richard T. Fox, Aleksander J. Pyzik, Chan Han
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Patent number: 6200526Abstract: A process for preparing complex-shaped, ceramic-metal composite articles, comprising: (a) contacting a non-wettable powder that is non-wetting to a metal to be used for infiltration with a shaped ceramic body to form a layer of the non-wettable powder on one or more surfaces of the shaped ceramic body, wherein the shaped ceramic body has a region where there is no layer of the non-wettable powder, and (b) infiltration the shaped ceramic body with the metal through the region or regions where there is no layer of the non-wettable powder, such that a complex-shaped ceramic-metal composite comprising one or more metal phases and one or more ceramic phases is formed, wherein the article has substantially the net shape of the shaped ceramic body and undesirable regions of excess metal on the surface and undesirable phases within the complex-shaped ceramic-metal composite article near the surface are located only in the region or regions where there is no layer of the non-wettable powder.Type: GrantFiled: May 11, 1999Date of Patent: March 13, 2001Assignee: The Dow Chemical CompanyInventors: Richard T. Fox, Aleksander J. Pyzik, Chan Han, Robert T. Nilsson
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Patent number: 5930581Abstract: The invention is a complex-shaped article, comprising an article prepared by joining at least one multi-phase ceramic-metal part and at least one shaped part of another material, wherein the theoretical density of the at least one ceramic-metal part is greater than 80 percent.In another aspect, the invention is a process for preparing complex-shaped articles, comprising:(a) forming at least one ceramic-metal part;(b) forming at least one shaped part of another material; and(c) joining the at least one shaped ceramic-metal part with the at least one shaped part of another material such that a complex-shaped article is formed.The invention is a less costly and time-consuming process for preparing complex-shaped composite articles wherein the articles are formed of two or more selected materials wherein one of the materials is a ceramic-metal composite.Type: GrantFiled: December 24, 1996Date of Patent: July 27, 1999Assignee: The Dow Chemical CompanyInventors: David W. Born, Richard T. Fox, Donald J. Perettie
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Patent number: 5900277Abstract: A process for preparing complex-shaped, ceramic-metal composite articles, comprising:a) contacting a non-wettable powder that is non-wetting to a metal to be used for infiltration with a shaped ceramic body to form a layer(s) of the non-wettable powder on one or more surface(s) of the shaped ceramic body wherein the shaped ceramic body has a region(s) where there is no layer of the non-wettable powder;b) infiltrating the shaped ceramic body with the metal through the region(s) where there is no layer of the non-wettable powder such that a complex-shaped ceramic-metal composite comprising one or more metal phases and one or more ceramic phases is formed, wherein the article has substantially the net shape of the shaped ceramic body and the undesirable regions of excess metal on the surface and undesirable phases within the complex-shaped ceramic-metal composite article near the surface are located only in the region(s) where there is no layer of the non-wettable powder.Type: GrantFiled: December 9, 1996Date of Patent: May 4, 1999Assignee: The Dow Chemical CompanyInventors: Richard T. Fox, Chan Han, Aleksander J. Pyzik, Robert T. Nilsson