Patents by Inventor Donald James Burlett
Donald James Burlett 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: 20190322818Abstract: A method for preparing a “preblend” of nanostructured carbon, such as nanotubes, fullerenes, or graphene, and a particulate solid, such as polymer beads, carbon black, graphitic particles or glassy carbon involving wet-mixing and followed by optional drying to remove the liquid medium. The preblend may be in the form of a core-shell powder material with the nanostructured carbon as the shell on the particulate solid core. The preblend may provide particularly improved dispersion of single-walled nanotubes in ethylene-?-olefin elastomer compositions, resulting in improved reinforcement from the nanotubes. The improved elastomer compositions may show simultaneous improvement in both modulus and in elongation at break. The elastomer compositions may be formed into useful rubber articles.Type: ApplicationFiled: June 4, 2019Publication date: October 24, 2019Inventors: Donald James Burlett, Henning Richter, Ramesh Sivarajan, Viktor Vejins
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Patent number: 10308773Abstract: A method for preparing a “preblend” of nanostructured carbon, such as nanotubes, fullerenes, or graphene, and a particulate solid, such as polymer beads, carbon black, graphitic particles or glassy carbon involving wet-mixing and followed by optional drying to remove the liquid medium. The preblend may be in the form of a core-shell powder material with the nanostructured carbon as the shell on the particulate solid core. The preblend may provide particularly improved dispersion of single-walled nanotubes in ethylene-?-olefin elastomer compositions, resulting in improved reinforcement from the nanotubes. The improved elastomer compositions may show simultaneous improvement in both modulus and in elongation at break. The elastomer compositions may be formed into useful rubber articles.Type: GrantFiled: April 9, 2018Date of Patent: June 4, 2019Assignee: Gates CorporationInventors: Donald James Burlett, Henning Richter, Ramesh Sivarajan, Viktor Vejins
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Publication number: 20180223052Abstract: A method for preparing a “preblend” of nanostructured carbon, such as nanotubes, fullerenes, or graphene, and a particulate solid, such as polymer beads, carbon black, graphitic particles or glassy carbon involving wet-mixing and followed by optional drying to remove the liquid medium. The preblend may be in the form of a core-shell powder material with the nanostructured carbon as the shell on the particulate solid core. The preblend may provide particularly improved dispersion of single-walled nanotubes in ethylene-?-olefin elastomer compositions, resulting in improved reinforcement from the nanotubes. The improved elastomer compositions may show simultaneous improvement in both modulus and in elongation at break. The elastomer compositions may be formed into useful rubber articles.Type: ApplicationFiled: April 9, 2018Publication date: August 9, 2018Inventors: Donald James Burlett, Henning Richter, Ramesh Sivarajan, Viktor Vejins
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Patent number: 9938383Abstract: A method for preparing a “preblend” of nano-structured carbon, such as nanotubes, fullerenes, or graphene, and a particulate solid, such as polymer beads, carbon black, graphitic particles or glassy carbon involving wet-mixing and followed by optional drying to remove the liquid medium. The preblend may be in the form of a core-shell powder material with the nano-structured carbon as the shell on the particulate solid core. The preblend may provide particularly improved dispersion of single-wall nanotubes in ethylene-?-olefin elastomer compositions, resulting in improved reinforcement from the nanotubes. The improved elastomer compositions may show simultaneous improvement in both modulus and in elongation at break. The elastomer compositions may be formed into useful rubber articles.Type: GrantFiled: January 23, 2017Date of Patent: April 10, 2018Assignee: Gates CorporationInventors: Donald James Burlett, Henning Richter, Ramesh Sivarajan, Viktor Vejins
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Publication number: 20170130010Abstract: A method for preparing a “preblend” of nano-structured carbon, such as nanotubes, fullerenes, or graphene, and a particulate solid, such as polymer beads, carbon black, graphitic particles or glassy carbon involving wet-mixing and followed by optional drying to remove the liquid medium. The preblend may be in the form of a core-shell powder material with the nano-structured carbon as the shell on the particulate solid core. The preblend may provide particularly improved dispersion of single-wall nanotubes in ethylene-?-olefin elastomer compositions, resulting in improved reinforcement from the nanotubes. The improved elastomer compositions may show simultaneous improvement in both modulus and in elongation at break. The elastomer compositions may be formed into useful rubber articles.Type: ApplicationFiled: January 23, 2017Publication date: May 11, 2017Inventors: Donald James Burlett, Henning Richter, Ramesh Sivarajan, Viktor Vejins
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Patent number: 9550907Abstract: A method for preparing a “preblend” of nano-structured carbon, such as nanotubes, fullerenes, or graphene, and a particulate solid, such as carbon black, graphitic particles or glassy carbon involving wet-mixing and followed by optional drying to remove the liquid medium. The preblend may be in the form of a core-shell powder material with the nano-structured carbon as the shell on the particulate solid core. The preblend may provide particularly improved dispersion of single-wall nanotubes in ethylene-?-olefin elastomer compositions, resulting in improved reinforcement from the nanotubes. The improved elastomer compositions may show simultaneous improvement in both modulus and in elongation at break. The elastomer compositions may be formed into useful rubber articles.Type: GrantFiled: February 27, 2015Date of Patent: January 24, 2017Assignee: Gates CorporationInventors: Donald James Burlett, Henning Richter, Ramesh Sivarajan, Viktor Vejins
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Patent number: 9434222Abstract: A snap-in tire valve for mounting in a valve hole in a wheel rim, having a valve body and a resilient member having an overall shape including a groove and a rib adapted to snap into and be retained in the hole. The resilient member may include a rubber that is the reaction product of ethylene-propylene copolymer elastomer, a peroxide curative, zinc diacrylate or zinc dimethacrylate, and a high-density inert filler, such as barium sulfate. The resilient member may include a first and second rubber members of different compositions from each other and defining two layers under the groove. The thickness of the layer of the first rubber member is preferably greater than the thickness of the layer of the second rubber member.Type: GrantFiled: March 12, 2013Date of Patent: September 6, 2016Assignee: GATES CORPORATIONInventors: Donald James Burlett, John Graeme Knox
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Publication number: 20160251534Abstract: A method for preparing a “preblend” of nano-structured carbon, such as nanotubes, fullerenes, or graphene, and a particulate solid, such as carbon black, graphitic particles or glassy carbon involving wet-mixing and followed by optional drying to remove the liquid medium. The preblend may be in the form of a core-shell powder material with the nano-structured carbon as the shell on the particulate solid core. The preblend may provide particularly improved dispersion of single-wall nanotubes in ethylene-?-olefin elastomer compositions, resulting in improved reinforcement from the nanotubes. The improved elastomer compositions may show simultaneous improvement in both modulus and in elongation at break. The elastomer compositions may be formed into useful rubber articles.Type: ApplicationFiled: February 27, 2015Publication date: September 1, 2016Inventors: Donald James Burlett, Henning Richter, Ramesh Sivarajan, Viktor Vejins
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Publication number: 20140261753Abstract: A snap-in tire valve for mounting in a valve hole in a wheel rim, having a valve body and a resilient member having an overall shape including a groove and a rib adapted to snap into and be retained in the hole. The resilient member may include a rubber that is the reaction product of ethylene-propylene copolymer elastomer, a peroxide curative, zinc diacrylate or zinc dimethacrylate, and a high-density inert filler, such as barium sulfate. The resilient member may include a first and second rubber members of different compositions from each other and defining two layers under the groove. The thickness of the layer of the first rubber member is preferably greater than the thickness of the layer of the second rubber member.Type: ApplicationFiled: March 12, 2013Publication date: September 18, 2014Applicant: THE GATES CORPORATIONInventors: Donald James Burlett, John Graeme Knox
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Publication number: 20130333817Abstract: A tire valve for snap-in mounting in a valve hole in a wheel rim, having a resilient member surrounding and bonded to at least a portion of the valve body, wherein the resilient member is a vulcanized rubber composition comprising ethylene alpha-olefin elastomer, carbon black, high-density inert filler, and an efficient vulcanization cure system.Type: ApplicationFiled: June 18, 2012Publication date: December 19, 2013Applicant: THE GATES CORPORATIONInventor: Donald James Burlett
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Publication number: 20020174926Abstract: This invention relates to tires which have a rubber insert within the tire sidewall of a rubber composition which contains at least one of N,N′-(m-phenylene) bis citraconamic acid and N,N′-(m-xylylene) bis citraconamic acid. Such rubber insert is preferably of a stiff rubber composition which helps to support the weight of the vehicle to which the tire is mounted in situations where there is a loss of air pressure within the tire cavity. During periods of operation after loss of air pressure, the rubber insert is intended to aid in supporting a significant amount of the load assumed by the tire which leads to an internal generation of heat with the insert rubber composition, with an accompanying rise of temperature of the insert itself It is therefore important that the rubber composition of such rubber insert have a high degree of heat durability under conditions of working at the elevated temperature.Type: ApplicationFiled: March 15, 2001Publication date: November 28, 2002Inventors: Richard Michael D'Sidocky, Lawson Gibson Wideman, Donald James Burlett