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).

  • Patent number: 9463550
    Abstract: 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: Grant
    Filed: February 19, 2014
    Date of Patent: October 11, 2016
    Assignee: Rohm and Haas Electronic Materials CMP Holdings, Inc.
    Inventors: George McClain, Alan Saikin, David Kolesar, Aaron Sarafinas, Robert L. Post
  • Patent number: 9463553
    Abstract: 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: Grant
    Filed: February 19, 2014
    Date of Patent: October 11, 2016
    Assignee: Rohm and Haas Electronic Materials CMP Holdings, Inc.
    Inventors: David Kolesar, Aaron Sarafinas, Alan Saikin, Robert L. Post
  • Patent number: 9393532
    Abstract: 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 a
    Type: Grant
    Filed: January 27, 2014
    Date of Patent: July 19, 2016
    Inventors: Santhosh K. Ramalingam, Aaron Sarafinas
  • Publication number: 20150352506
    Abstract: 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 a
    Type: Application
    Filed: January 27, 2014
    Publication date: December 10, 2015
    Applicants: ROHM AND HAAS COMPANY, DOW GLOBAL TECHNOLOGIES LLC, ROHM AND HAAS COMPANY, DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Santhosh K. Ramalingam, Aaron Sarafinas
  • Publication number: 20150231758
    Abstract: 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: Application
    Filed: February 19, 2014
    Publication date: August 20, 2015
    Inventors: George McClain, Alan Saikin, David Kolesar, Aaron Sarafinas, Robert L. Post
  • Publication number: 20150231765
    Abstract: 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: Application
    Filed: February 19, 2014
    Publication date: August 20, 2015
    Inventors: David Kolesar, Aaron Sarafinas, Alan Saikin, Robert L. Post
  • Patent number: 7947748
    Abstract: 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: Grant
    Filed: December 29, 2008
    Date of Patent: May 24, 2011
    Assignee: Rohm and Haas Company
    Inventors: John David Finch, Biwang Jiang, Aaron Sarafinas, Andrew M. Savo
  • Publication number: 20090275769
    Abstract: 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: Application
    Filed: April 30, 2009
    Publication date: November 5, 2009
    Inventors: Rajiv Manohar Banavali, Robert Tryon Hanlon, Aaron Sarafinas, Alfred Karl Schultz, Cheryl Irene Teich, Jose Antonio Trejo
  • Publication number: 20090176897
    Abstract: 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: Application
    Filed: December 29, 2008
    Publication date: July 9, 2009
    Inventors: John David Finch, Biwang Jiang, Aaron Sarafinas, Andrew M. Savo
  • Patent number: 7275928
    Abstract: 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: Grant
    Filed: November 23, 2004
    Date of Patent: October 2, 2007
    Assignee: Rohm and Haas Electronic Materials CMP Holdings, Inc.
    Inventors: David M. Kolesar, Robert L. Post, Alan H. Saikin, Aaron Sarafinas
  • Patent number: 7029641
    Abstract: The present invention relates to a method of making lithium borohydride that gives high yields while maintaining ease of purification.
    Type: Grant
    Filed: October 3, 2002
    Date of Patent: April 18, 2006
    Assignee: Rohm and Haas Company
    Inventors: John Hiroshi Yamamoto, Won Suh Park, Aaron Sarafinas, Michael Miller Cook, Stephen Gerard Maroldo
  • Publication number: 20060058427
    Abstract: 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: Application
    Filed: August 22, 2005
    Publication date: March 16, 2006
    Inventors: Julia O'Neill, Aaron Sarafinas, Scott Snyder
  • Publication number: 20030068265
    Abstract: The present invention relates to a method of making lithium borohydride that gives high yields while maintaining ease of purification.
    Type: Application
    Filed: October 3, 2002
    Publication date: April 10, 2003
    Inventors: John Hiroshi Yamamoto, Won Shu Park, Aaron Sarafinas, Michael Miller Cook, Stephen Gerard Maroldo
  • Patent number: 6063929
    Abstract: The present invention relates to a method to prepare 2-pyridyl substituted dihydrothiazoles.
    Type: Grant
    Filed: February 2, 1999
    Date of Patent: May 16, 2000
    Assignee: Rohm and Haas Company
    Inventors: Kathleen Anne Kas, Aaron Sarafinas, Randall Wayne Stephens