Patents by Inventor Sharon Allen
Sharon Allen 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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Patent number: 11697242Abstract: A method of additive manufacturing is comprised of providing a material comprised of a ethyl cellulose polymer having an ethoxy content of 43% to 52% by mass and a plasticizer. The material is heated and dispensed through a nozzle to form an extrudate deposited on a base. The base, nozzle or combination thereof is moved while dispensing the material so that there is horizontal displacement between the base and nozzle in a predetermined pattern to form an initial layer of the material on the base and successive layers of the material are adhered on the initial layer to form an additive manufactured part by repeating the aforementioned steps. The article formed of the ethyl cellulose polymer may be used in many applications such as those related to the pharmaceutical and food industries.Type: GrantFiled: July 20, 2016Date of Patent: July 11, 2023Assignee: Nutrition & Biosciences USA 1, LLCInventors: Roland Bayer, Aleksander J. Pyzik, Sharon Allen, Scott T. Matteucci
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Patent number: 11426924Abstract: An additive manufactured article is comprised of at least two adhered layers of extrudates (120) comprised of a thermoset material having therein a phase change material, wherein the phase change material undergoes a phase change at a temperature less than where the thermoset material decomposes. The article may be made by dispensing a mixture comprised of an organic reactive material and phase change material forming extrudates that are 3D printed into an article having multiple layers of extrudates bound together and then allowing the organic reactive material to react forming a thermoset material having therein the phase change material to form the additive manufactured article. The shape of the article may be changed by heating to a temperature above the temperature where the phase change material undergoes a phase change while applying a force and then cooling below the phase change temperature.Type: GrantFiled: June 26, 2017Date of Patent: August 30, 2022Assignee: Dow Global Technologies LLCInventors: Craig F. Gorin, Aleksander J. Pyzik, Sanjay C. Solanki, Sharon Allen, Daniel P. Sophiea, Niranjan Malvadkar, Daniel L. Dermody
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Publication number: 20210299948Abstract: A method of fused filament fabrication (FFF) additive manufacturing comprises employing a thermoplastic blend comprised of high density polyethylene and a second thermoplastic polymer, wherein the second polymer is a low density polyethylene (LDPE), functionalized polyolefin or combination thereof and the amount of high density polyethylene to the amount of second thermoplastic polymer by weight is a ratio from 1.5/1 to 20/1. LDPE means a polyethylene that have been radically polymerized at high pressure. The method allows for the additive manufacturing article that retains the desirable mechanical properties of HDPE without experiencing the problems inherent in FFF printing of HDPE or use of solid fillers. In a particular embodiment, the additive manufactured article has a continuous phase and the second thermoplastic polymer is present as a discontinuous phase within the additive article manufactured article and the filament used to make the article.Type: ApplicationFiled: July 12, 2019Publication date: September 30, 2021Inventors: Craig F. Gorin, Sanjib Biswas, Sharon Allen, Scott T. Matteucci, Daniel L. Dermody, Harpreet Singh, Aleksander J. Pyzik
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Patent number: 10967562Abstract: An additive elastomeric manufactured part having improved surface finish is made by repeatedly extruding through a nozzle to build up layers of a material comprised of a prepolymer comprised of an isocyanate terminated prepolymer and a filler in an amount such that the material has a shear storage modulus G? of 100,000 to 300,000 Pa measured at an oscillation rate of 1 Hz and a relaxation time of 20 seconds to 360 seconds. It has been discovered that the particular material having these rheological properties is able to improve the surface finish of the additive manufactured part without slumping and is believed to be due to surface flow of material into valleys between the extrudates as they are being built up.Type: GrantFiled: May 19, 2017Date of Patent: April 6, 2021Assignee: Dow Global Technologies LLCInventors: Craig F. Gorin, Janet M. Goss, Aleksander J. Pyzik, Sharon Allen, Sanjay C. Solanki, Daniel P. Sophiea
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Publication number: 20200247041Abstract: A method of selective sintering additive manufacturing comprises employing a powder comprising composite particulates comprising a first thermoplastic polymer and a second thermoplastic polymer interspersed with each other. In a particular embodiment, the first thermoplastic polymer and second thermoplastic polymer have differing absorbance of the irradiation used to sinter the particles when performing the additive manufacturing method. The first and second thermoplastic polymer may be continuously intertwined in within the particles or one of the polymers may be a discontinuously dispersed in a continuous matrix of the other polymer.Type: ApplicationFiled: October 18, 2016Publication date: August 6, 2020Inventors: Joshua M. Katzenstein, Robert S. Moglia, Mary Anne Leugers, Aleksander J. Pyzik, Scott T. Matteucci, Sharon Allen, Daniel L. Dermody, Roland Bayer
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Patent number: 10626237Abstract: A three-dimensionally printed article comprises a build material and a support material, the support material comprising a hydroxypropyl methylcellulose having a DS of at least 1.0 and an MS of at least 0.6, wherein DS is the degree of substitution of methoxyl groups and MS is the molar substitution of hydroxypropoxyl groups. The support material can be removed from the build material by contacting the support material with water.Type: GrantFiled: March 18, 2019Date of Patent: April 21, 2020Inventors: Roland Bayer, Aleksander J. Pyzik, Sharon Allen
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Publication number: 20190248065Abstract: An additive manufactured article is comprised of at least two adhered layers of extrudates (120) comprised of a thermoset material having therein a phase change material, wherein the phase change material undergoes a phase change at a temperature less than where the thermoset material decomposes. The article may be made by dispensing a mixture comprised of an organic reactive material and phase change material forming extrudates that are 3D printed into an article having multiple layers of extrudates bound together and then allowing the organic reactive material to react forming a thermoset material having therein the phase change material to form the additive manufactured article. The shape of the article may be changed by heating to a temperature above the temperature where the phase change material undergoes a phase change while applying a force and then cooling below the phase change temperature.Type: ApplicationFiled: June 26, 2017Publication date: August 15, 2019Inventors: Craig F. Gorin, Aleksander J. Pyzik, Sanjay C. Solanki, Sharon Allen, Daniel P. Sophiea, NIranjan Malvadkar, Daniel L. Dermody
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Publication number: 20190233335Abstract: A porous inorganic additive manufactured article that is comprised of at least two layers of inorganic particulates bound together by a carbon binding phase throughout. The additive manufactured article may be formed by additive manufacturing using a mixture comprised of an organic reactive material and inorganic particulates, wherein the organic reactive material is subsequently reacted to form a thermoset material that forms carbon upon heating that binds the inorganic particulates together to form the porous inorganic additive manufactured article. The porous inorganic additive manufactured article may then be infiltrated with a liquid that is solidified to form a composite article or may be further heated in a differing atmosphere to form a further sintered or reacted porous inorganic article.Type: ApplicationFiled: June 26, 2017Publication date: August 1, 2019Applicant: Dow Global Technologies LLCInventors: Aleksander J Pyzik, Craig F. Gorin, Janet M. Goss, Sharon Allen, Daniel P. Sophiea
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Publication number: 20190211170Abstract: A three-dimensionally printed article comprises a build material and a support material, the support material comprising a hydroxypropyl methylcellulose having a DS of at least 1.0 and an MS of at least 0.6, wherein DS is the degree of substitution of methoxyl groups and MS is the molar substitution of hydroxypropoxyl groups. The support material can be removed from the build material by contacting the support material with water.Type: ApplicationFiled: March 18, 2019Publication date: July 11, 2019Inventors: Roland Bayer, Aleksander J. Pyzik, Sharon Allen
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Publication number: 20190184628Abstract: An additive elastomeric manufactured part having improved surface finish is made by repeatedly extruding through a nozzle to build up layers of a material comprised of a prepolymer comprised of an isocyanate terminated prepolymer and a filler in an amount such that the material has a shear storage modulus G? of 100,000 to 300,000 Pa measured at an oscillation rate of 1 Hz and a relaxation time of 20 seconds to 360 seconds. It has been discovered that the particular material having these rheological properties is able to improve the surface finish of the additive manufactured part without slumping and is believed to be due to surface flow of material into valleys between the extrudates as they are being built up.Type: ApplicationFiled: May 19, 2017Publication date: June 20, 2019Inventors: Craig F. Gorin, Janet M. Goss, Aleksander J. Pyzik, Sharon Allen, Sanjay C. Solanki, Daniel P. Sophiea
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Patent number: 10259921Abstract: A three-dimensionally printed article comprises a build material and a support material, the support material comprising a hydroxypropyl methylcellulose having a DS of at least 1.0 and an MS of at least 0.6, wherein DS is the degree of substitution of methoxyl groups and MS is the molar substitution of hydroxypropoxyl groups. The support material can be removed from the build material by contacting the support material with water.Type: GrantFiled: January 9, 2015Date of Patent: April 16, 2019Assignee: DOW GLOBAL TECHNOLOGIES LLCInventors: Roland Bayer, Aleksander J. Pyzik, Sharon Allen
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Patent number: 10214451Abstract: Skins and/or adhesive layers are formed on a porous ceramic honeycomb by applying a layer of a cement composition to a surface of the honeycomb and firing the cement composition. The cement composition contains a water-swellable clay, high aspect inorganic filler particles and water, and are nearly or completely devoid of particles smaller than 100 nm and a cellulosic polymer.Type: GrantFiled: December 10, 2012Date of Patent: February 26, 2019Assignee: DOW GLOBAL TECHNOLOGIES LLCInventors: Aleksander J. Pyzik, Sharon Allen, Peter C. Saucier
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Patent number: 10201933Abstract: A three-dimensionally printed article is comprised of a hydroxyethyl methylcellulose (HEMC) having a DS of 1.7 to 2.5 and an MS of at least 0.5, wherein DS is the degree of substitution of methoxyl groups and MS is the molar substitution of hydroxyethoxyl groups. The HEMC may advantageously be used as a support material when making a three-dimensionally printed article using a build material such as a different thermoplastic polymer such as a poly(acrylonitrile-butadiene-styrene), polylactic acid, polyethylene and polyprophylene. When the HEMC is a support material it may be easily removed from the build material by contacting the three dimensionally printed article with water, which may be at ambient temperatures and a pH that is neutral or close to neutral.Type: GrantFiled: June 2, 2016Date of Patent: February 12, 2019Assignee: Dow Global Technologies LLCInventors: Roland Bayer, Anette Wagner, Aleksander J. Pyzik, Sharon Allen
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Patent number: 10100168Abstract: The inventions is directed to a method for recovering support materials used in an additive manufacturing process. The method comprises exposing a precursor additive manufactured article comprised of a water soluble support polymer and an insoluble material to water. The water soluble support polymer is dissolved in the water. The remaining article is then removed from the water. The dissolved water soluble polymer is precipitated from the water. The precipitated polymer is separated from the water and any remaining water removed to recover the water soluble support polymer. The recovered water soluble support polymer may then be re-used to make further additive manufactured articles.Type: GrantFiled: January 9, 2015Date of Patent: October 16, 2018Assignee: Dow Global Technologies LLCInventors: Roland Bayer, Scott T. Matteucci, Aleksander J. Pyzik, Sharon Allen, Mary Anne Leugers, Daniel L. Dermody, Robert S. Moglia
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Publication number: 20180222111Abstract: A method of additive manufacturing is comprised of providing a material comprised of a ethyl cellulose polymer having an ethoxy content of 43% to 52% by mass and a plasticizer. The material is heated and dispensed through a nozzle to form an extrudate deposited on a base. The base, nozzle or combination thereof is moved while dispensing the material so that there is horizontal displacement between the base and nozzle in a predetermined pattern to form an initial layer of the material on the base and successive layers of the material are adhered on the initial layer to form an additive manufactured part by repeating the aforementioned steps. The article formed of the ethyl cellulose polymer may be used in many applications such as those related to the pharmaceutical and food industries.Type: ApplicationFiled: July 20, 2016Publication date: August 9, 2018Inventors: Roland Bayer, Aleksander J. Pyzik, Sharon Allen, Scott T. Matteucci
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Publication number: 20180147785Abstract: A three-dimensionally printed article is comprised of a hydroxyethyl methylcellulose (HEMC) having a DS of 1.7 to 2.5 and an MS of at least 0.5, wherein DS is the degree of substitution of methoxyl groups and MS is the molar substitution of hydroxyethoxyl groups. The HEMC may advantageously be used as a support material when making a three-dimensionally printed article using a build material such as a different thermoplastic polymer such as a poly(acrylonitrile-butadiene-styrene), polylactic acid, polyethylene and polyprophylene. When the HEMC is a support material it may be easily removed from the build material by contacting the three dimensionally printed article with water, which may be at ambient temperatures and a pH that is neutral or close to neutral.Type: ApplicationFiled: June 2, 2016Publication date: May 31, 2018Inventors: Roland Bayer, Anette Wagner, Aleksander J. Pyzik, Sharon Allen
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Publication number: 20170022341Abstract: A three-dimensionally printed article comprises a build material and a support material, the support material comprising a hydroxypropyl methylcellulose having a DS of at least 1.0 and an MS of at least 0.6, wherein DS is the degree of substitution of methoxyl groups and MS is the molar substitution of hydroxypropoxyl groups. The support material can be removed from the build material by contacting the support material with water.Type: ApplicationFiled: January 9, 2015Publication date: January 26, 2017Inventors: Roland Bayer, Aleksander J. Pyzik, Sharon Allen
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Publication number: 20160333165Abstract: The inventions is directed to a method for recovering support materials used in an additive manufacturing process. The method comprises exposing a precursor additive manufactured article comprised of a water soluble support polymer and an insoluble material to water. The water soluble support polymer is dissolved in the water. The remaining article is then removed from the water. The dissolved water soluble polymer is precipitated from the water. The precipitated polymer is separated from the water and any remaining water removed to recover the water soluble support polymer. The recovered water soluble support polymer may then be re-used to make further additive manufactured articles.Type: ApplicationFiled: January 9, 2015Publication date: November 17, 2016Inventors: Roland Bayer, Scott T. Matteucci, Aleksander J. Pyzik, Sharon Allen, Mary Anne Leugers, Daniel L. Dermody, Robert S. Moglia
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Publication number: 20140319742Abstract: Skins and/or adhesive layers are formed on a porous ceramic honeycomb by applying a layer of a cement composition to a surface of the honeycomb and firing the cement composition. The cement composition contains a water-swellable clay, high aspect inorganic filler particles and water, and are nearly or completely devoid of particles smaller than 100 nm and a cellulosic polymer.Type: ApplicationFiled: December 10, 2012Publication date: October 30, 2014Applicant: Dow Global Technologies LLCInventors: Aleksander J. Pyzik, Sharon Allen, Peter C. Saucier
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Patent number: 7528087Abstract: A porous mullite composition is made by Forming a mixture of one or more precursor compounds having the elements present in mullite (e.g., clay, alumina, silica) and a property enhancing compound. The property enhancing compound is a compound having an element selected from the group consisting of Mg, Ca, Fe, Na, K, Ce, Pr, Nd, Sm, Eu, Gd, Th, Dy, Ho, Er, Tm, Yb, Lu, B, Y, Sc, La and combination thereof. The mixture is shaped and to form a porous green shape which is heated under an atmosphere having a fluorine containing gas to a temperature sufficient to form a mullite composition comprised substantially of acicular mullite grains that are essentially chemically bound.Type: GrantFiled: April 23, 2004Date of Patent: May 5, 2009Assignee: Dow Global Technologies, Inc.Inventors: Chandan Saha, Sharon Allen, Chan Han, Robert T. Nilsson, Arthur R. Prunier, Jr., Aleksander J. Pyzik, Sten A. Wallin, Robin Ziebarth, Timothy J. Gallagher