Patents by Inventor Aaron Sarafinas
Aaron Sarafinas 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: 9463550Abstract: A method of making a polishing layer for polishing a substrate selected from at least one of a magnetic substrate, an optical substrate and a semiconductor substrate is provided, comprising: providing a liquid prepolymer material; providing a plurality of hollow microspheres; exposing the plurality of hollow microspheres to a carbon dioxide atmosphere for an exposure period to form a plurality of treated hollow microspheres; combining the liquid prepolymer material with the plurality of treated hollow microspheres to form a curable mixture; allowing the curable mixture to undergo a reaction to form a cured material, wherein the reaction is allowed to begin ?24 hours after the formation of the plurality of treated hollow microspheres; and, deriving at least one polishing layer from the cured material; wherein the at least one polishing layer has a polishing surface adapted for polishing the substrate.Type: GrantFiled: February 19, 2014Date of Patent: October 11, 2016Assignee: Rohm and Haas Electronic Materials CMP Holdings, Inc.Inventors: George McClain, Alan Saikin, David Kolesar, Aaron Sarafinas, Robert L. Post
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Patent number: 9463553Abstract: A method of making a polishing layer for polishing a substrate is provided, comprising: providing a liquid prepolymer material; providing a plurality of hollow microspheres; exposing the plurality of hollow microspheres to a vacuum to form a plurality of exposed hollow microspheres; treating the plurality of exposed hollow microspheres with a carbon dioxide atmosphere to form a plurality of treated hollow microspheres; combining the liquid prepolymer material with the plurality of treated hollow microspheres to form a curable mixture; allowing the curable mixture to undergo a reaction to form a cured material, wherein the reaction is allowed to begin ?24 hours after the formation of the plurality of treated hollow microspheres; and, deriving at least one polishing layer from the cured material; wherein the at least one polishing layer has a polishing surface adapted for polishing the substrate.Type: GrantFiled: February 19, 2014Date of Patent: October 11, 2016Assignee: Rohm and Haas Electronic Materials CMP Holdings, Inc.Inventors: David Kolesar, Aaron Sarafinas, Alan Saikin, Robert L. Post
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Patent number: 9393532Abstract: A method for making an emulsion using a rotating membrane device (10) including: i) a membrane assembly (12) including a cylindrical porous surface (14) enclosing an inner chamber (16) concentrically positioned about an axis (X), ii) a vane assembly (18) including a plurality of vanes (20) extending along the axial length (L) of the porous surface (14) of the membrane assembly (12), wherein the vanes (24) comprise a shear surface (24) located within 1 mm of the porous surface (14), and iii) a vessel (22) enclosing the membrane and vane assemblies (12, 18); wherein the method includes the step of moving a dispersible liquid phase (26) through the porous surface (14) into a continuous liquid phase (28) while rotating at least one of the vane assembly (18) or membrane assembly (12) relative to the other about the axis (X) such that the shear surfaces (24) exert shear forces upon the dispersible liquid phase (26) passing through the porous surface (14) to form droplets (30) of a dispersed liquid phase having aType: GrantFiled: January 27, 2014Date of Patent: July 19, 2016Inventors: Santhosh K. Ramalingam, Aaron Sarafinas
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Publication number: 20150352506Abstract: A method for making an emulsion using a rotating membrane device (10) including: i) a membrane assembly (12) including a cylindrical porous surface (14) enclosing an inner chamber (16) concentrically positioned about an axis (X), ii) a vane assembly (18) including a plurality of vanes (20) extending along the axial length (L) of the porous surface (14) of the membrane assembly (12), wherein the vanes (24) comprise a shear surface (24) located within 1 mm of the porous surface (14), and iii) a vessel (22) enclosing the membrane and vane assemblies (12, 18); wherein the method includes the step of moving a dispersible liquid phase (26) through the porous surface (14) into a continuous liquid phase (28) while rotating at least one of the vane assembly (18) or membrane assembly (12) relative to the other about the axis (X) such that the shear surfaces (24) exert shear forces upon the dispersible liquid phase (26) passing through the porous surface (14) to form droplets (30) of a dispersed liquid phase having aType: ApplicationFiled: January 27, 2014Publication date: December 10, 2015Applicants: ROHM AND HAAS COMPANY, DOW GLOBAL TECHNOLOGIES LLC, ROHM AND HAAS COMPANY, DOW GLOBAL TECHNOLOGIES LLCInventors: Santhosh K. Ramalingam, Aaron Sarafinas
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Publication number: 20150231758Abstract: A method of making a polishing layer for polishing a substrate selected from at least one of a magnetic substrate, an optical substrate and a semiconductor substrate is provided, comprising: providing a liquid prepolymer material; providing a plurality of hollow microspheres; exposing the plurality of hollow microspheres to a carbon dioxide atmosphere for an exposure period to form a plurality of treated hollow microspheres; combining the liquid prepolymer material with the plurality of treated hollow microspheres to form a curable mixture; allowing the curable mixture to undergo a reaction to form a cured material, wherein the reaction is allowed to begin ?24 hours after the formation of the plurality of treated hollow microspheres; and, deriving at least one polishing layer from the cured material; wherein the at least one polishing layer has a polishing surface adapted for polishing the substrate.Type: ApplicationFiled: February 19, 2014Publication date: August 20, 2015Inventors: George McClain, Alan Saikin, David Kolesar, Aaron Sarafinas, Robert L. Post
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Publication number: 20150231765Abstract: A method of making a polishing layer for polishing a substrate is provided, comprising: providing a liquid prepolymer material; providing a plurality of hollow microspheres; exposing the plurality of hollow microspheres to a vacuum to form a plurality of exposed hollow microspheres; treating the plurality of exposed hollow microspheres with a carbon dioxide atmosphere to form a plurality of treated hollow microspheres; combining the liquid prepolymer material with the plurality of treated hollow microspheres to form a curable mixture; allowing the curable mixture to undergo a reaction to form a cured material, wherein the reaction is allowed to begin ?24 hours after the formation of the plurality of treated hollow microspheres; and, deriving at least one polishing layer from the cured material; wherein the at least one polishing layer has a polishing surface adapted for polishing the substrate.Type: ApplicationFiled: February 19, 2014Publication date: August 20, 2015Inventors: David Kolesar, Aaron Sarafinas, Alan Saikin, Robert L. Post
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Patent number: 7947748Abstract: A method for preparing monodisperse crosslinked bead polymers by introducing droplets having a harmonic mean size from 50 to 1500 microns and comprising at least one monomer, at least one crosslinker and a free-radical polymerization initiator into an aqueous medium through orifices to produce an aqueous suspension of droplets having a volume fraction of droplets from 35 to 64%; wherein the droplets are not encapsulated; causing the aqueous suspension of droplets to flow in a downward direction in a pipe in which the temperature is maintained at least 20° C. below the temperature at which the polymerization initiator has a half-life of 1 hour; and polymerizing the droplets in a reactor.Type: GrantFiled: December 29, 2008Date of Patent: May 24, 2011Assignee: Rohm and Haas CompanyInventors: John David Finch, Biwang Jiang, Aaron Sarafinas, Andrew M. Savo
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Publication number: 20090275769Abstract: A continuous process for esterification of fatty acids in glyceryl esters with C1-C8 aliphatic alcohols in a tubular reactor. The method uses an expanded resin catalyst bed in the tubular reactor.Type: ApplicationFiled: April 30, 2009Publication date: November 5, 2009Inventors: Rajiv Manohar Banavali, Robert Tryon Hanlon, Aaron Sarafinas, Alfred Karl Schultz, Cheryl Irene Teich, Jose Antonio Trejo
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Publication number: 20090176897Abstract: A method for preparing monodisperse crosslinked bead polymers by introducing droplets having a harmonic mean size from 50 to 1500 microns and comprising at least one monomer, at least one crosslinker and a free-radical polymerization initiator into an aqueous medium through orifices to produce an aqueous suspension of droplets having a volume fraction of droplets from 35 to 64%; wherein the droplets are not encapsulated; causing the aqueous suspension of droplets to flow in a downward direction in a pipe in which the temperature is maintained at least 20° C. below the temperature at which the polymerization initiator has a half-life of 1 hour; and polymerizing the droplets in a reactor.Type: ApplicationFiled: December 29, 2008Publication date: July 9, 2009Inventors: John David Finch, Biwang Jiang, Aaron Sarafinas, Andrew M. Savo
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Patent number: 7275928Abstract: The present invention provides an apparatus for forming a chemical mechanical polishing pad, comprising a tank with polymeric materials, a storage silo with microspheres and a curative storage tank with curing agents. The apparatus further provides a premix prep tank for forming a pre-mixture of the polymeric materials and the microspheres and a recirculation loop in the premix prep tank for recirculating the pre-mixture until a desired bulk density is reached. The apparatus further provides a premix run tank for storing the pre-mixture, a mixer for forming a mixture of the pre-mixture and the curing agents and a mold for molding the mixture.Type: GrantFiled: November 23, 2004Date of Patent: October 2, 2007Assignee: Rohm and Haas Electronic Materials CMP Holdings, Inc.Inventors: David M. Kolesar, Robert L. Post, Alan H. Saikin, Aaron Sarafinas
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Patent number: 7029641Abstract: The present invention relates to a method of making lithium borohydride that gives high yields while maintaining ease of purification.Type: GrantFiled: October 3, 2002Date of Patent: April 18, 2006Assignee: Rohm and Haas CompanyInventors: John Hiroshi Yamamoto, Won Suh Park, Aaron Sarafinas, Michael Miller Cook, Stephen Gerard Maroldo
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Publication number: 20060058427Abstract: The present invention provides methods of making sticky powder comprising mixing one or more resin or (co)polymer powders in one or more mixing devices without agglomerating the powders and while measuring the power, work or torque drawn by the mixing devices, the mixing continuing until the measure of the power or torque drawn indicates that the powders have become sticky. The mixing further comprises adding to the powders one or more dry materials and mixing to so that the dry materials adhere or “bond” to the sticky powders. Alternatively, the methods further comprise slowing or stopping the mixing, or cooling while mixing once the said sticky powders have been formed, adding one or more dry materials to form a sticky powder mixture, and further mixing to bond the sticky powders and the dry materials together. The dry materials may comprise one or more flake materials, e.g.Type: ApplicationFiled: August 22, 2005Publication date: March 16, 2006Inventors: Julia O'Neill, Aaron Sarafinas, Scott Snyder
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Publication number: 20030068265Abstract: The present invention relates to a method of making lithium borohydride that gives high yields while maintaining ease of purification.Type: ApplicationFiled: October 3, 2002Publication date: April 10, 2003Inventors: John Hiroshi Yamamoto, Won Shu Park, Aaron Sarafinas, Michael Miller Cook, Stephen Gerard Maroldo
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Patent number: 6063929Abstract: The present invention relates to a method to prepare 2-pyridyl substituted dihydrothiazoles.Type: GrantFiled: February 2, 1999Date of Patent: May 16, 2000Assignee: Rohm and Haas CompanyInventors: Kathleen Anne Kas, Aaron Sarafinas, Randall Wayne Stephens