Patents by Inventor Sunil K. Pillalamarri

Sunil K. Pillalamarri 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: 10787596
    Abstract: The invention includes a reactive hot melt adhesive composition including an isocyanate functional prepolymer derived from a polyfunctional isocyanate having a functionality of about 2 or more and a polyol, an active hydrogen organofunctional silane, an active hydrogen non-silane capping agent and a thermoplastic polymer.
    Type: Grant
    Filed: March 9, 2018
    Date of Patent: September 29, 2020
    Assignee: H. B. Fuller Company
    Inventors: Sunil K. Pillalamarri, Thomas F. Kauffman
  • Publication number: 20180258330
    Abstract: The invention includes a reactive hot melt adhesive composition including an isocyanate functional prepolymer derived from a polyfunctional isocyanate having a functionality of about 2 or more and a polyol, an active hydrogen organofunctional silane, an active hydrogen non-silane capping agent and a thermoplastic polymer.
    Type: Application
    Filed: March 9, 2018
    Publication date: September 13, 2018
    Inventors: Sunil K. Pillalamarri, Thomas F. Kauffman
  • Patent number: 9728439
    Abstract: New compositions and methods of using those compositions as bonding compositions are provided. The compositions comprise a polymer dispersed or dissolved in a solvent system, and can be used to bond an active wafer to a carrier wafer or substrate to assist in protecting the active wafer and its active sites during subsequent processing and handling. The compositions form bonding layers that are chemically and thermally resistant, but that can also be softened to allow the wafers to slide apart at the appropriate stage in the fabrication process.
    Type: Grant
    Filed: April 29, 2010
    Date of Patent: August 8, 2017
    Assignee: Brewer Science Inc.
    Inventors: Sunil K. Pillalamarri, Chenghong Li
  • Publication number: 20170204295
    Abstract: A dampening structure includes a polymer layer having a first surface and a second surface. The first surface includes a plurality of micro-structures, wherein each of the micro-structures has a width of less than about 400 microns. An elastic modulus of the polymer layer is greater than about 0.1 MPa and less than about 5 GPa at 25° C. The polymer layer is non-tacky.
    Type: Application
    Filed: July 22, 2015
    Publication date: July 20, 2017
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Sunil K. Pillalamarri, Robert C. Fitzer
  • Publication number: 20130271828
    Abstract: The present invention is an optical bonding layer including an optical film and a liquid optically clear adhesive positioned adjacent the optical film. The optical film is one of an optically clear film adhesive, a stretch releasable optically clear contrast enhancement film and a stretch releasable carrier film. The optical bonding layer has a transmittance of at least about 75%.
    Type: Application
    Filed: December 16, 2011
    Publication date: October 17, 2013
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Albert I. Everaerts, Sunil K. Pillalamarri, Michael J. Ruether
  • Publication number: 20130136874
    Abstract: An optical assembly is provided that includes a display panel, a substantially transparent substrate and an adhesive composition. The adhesive composition includes the reaction product of a miscible blend that includes one or more (meth)acrylate monomer, one or more multifunctional (meth)acrylate oligomer and one or more free-radical generating photoinitiator. The one or more multifunctional (meth)acrylic oligomer includes an acrylic oligomer derived from (meth)acrylate monomers that is not substantially bonded to the adhesive composition after it has been cured by exposure to actinic radiation. Also provide is a method of making the optical assembly and a tape that includes a backing and the provided adhesive composition that has been cured.
    Type: Application
    Filed: August 15, 2011
    Publication date: May 30, 2013
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Jianhui Xia, Sunil K. Pillalamarri, Stanley C. Busman, Albert I. Everaerts
  • Publication number: 20130011683
    Abstract: An optically clear adhesive layer includes a liquid optically clear adhesive having a viscosity of less than about 20 Pa·s at a shear rate of 1 sec?1 and a thixotrope. The optically clear adhesive layer has a haze of about 2% or less, a viscosity of between about 2 and about 30 Pa·s at a shear rate of 10 sec?1, a displacement creep of about 0.2 radians or less when a stress of 10 Pa is applied for about 2 minutes and a recovery time of about 60 seconds or less to reach a delta of 35 degrees after a torque of about 100 microN·m is applied for about 60 seconds at a frequency of 1 Hz and immediately followed by a torque of 80 microN·m at a frequency of 1 Hz. The adhesive layer can be used in an optical assembly to bond a display panel to a substantially transparent substrate. The adhesive layer provides a cleavage strength between glass substrates of about 15 N/mm or less such that the optical assembly can be disassembled with little or no damage to the display panel or the substrate.
    Type: Application
    Filed: March 24, 2011
    Publication date: January 10, 2013
    Inventors: Stanley C. Busman, Sunil K. Pillalamarri, Thu-Van T. Tran, Christopher J. Campbell
  • Patent number: 8236669
    Abstract: New compositions and methods of using those compositions as bonding compositions are provided. The compositions are preferably thermoplastic and comprise imides, amideimides, and/or amideimide-siloxanes (either in polymeric or oligomeric form) dispersed or dissolved in a solvent system, and can be used to bond an active wafer to a carrier wafer or substrate to assist in protecting the active wafer and its active sites during subsequent processing and handling. The compositions form bonding layers that are chemically and thermally resistant, but that can also be softened to allow the wafers to slide apart at the appropriate stage in the fabrication process.
    Type: Grant
    Filed: November 18, 2010
    Date of Patent: August 7, 2012
    Assignee: Brewer Science Inc.
    Inventors: Wenbin Hong, Sunil K. Pillalamarri
  • Patent number: 7935780
    Abstract: New compositions and methods of using those compositions as bonding compositions are provided. The compositions are preferably thermoplastic and comprise imides, amideimides, and/or amideimide-siloxanes (either in polymeric or oligomeric form) dispersed or dissolved in a solvent system, and can be used to bond an active wafer to a carrier wafer or substrate to assist in protecting the active wafer and its active sites during subsequent processing and handling. The compositions form bonding layers that are chemically and thermally resistant, but that can also be softened to allow the wafers to slide apart at the appropriate stage in the fabrication process.
    Type: Grant
    Filed: June 25, 2008
    Date of Patent: May 3, 2011
    Assignee: Brewer Science Inc.
    Inventors: Wenbin Hong, Sunil K. Pillalamarri
  • Publication number: 20110065257
    Abstract: New compositions and methods of using those compositions as bonding compositions are provided. The compositions are preferably thermoplastic and comprise imides, amideimides, and/or amideimide-siloxanes (either in polymeric or oligomeric form) dispersed or dissolved in a solvent system, and can be used to bond an active wafer to a carrier wafer or substrate to assist in protecting the active wafer and its active sites during subsequent processing and handling. The compositions form bonding layers that are chemically and thermally resistant, but that can also be softened to allow the wafers to slide apart at the appropriate stage in the fabrication process.
    Type: Application
    Filed: November 18, 2010
    Publication date: March 17, 2011
    Applicant: BREWER SCIENCE INC.
    Inventors: Wenbin Hong, Sunil K. Pillalamarri
  • Publication number: 20100206479
    Abstract: New compositions and methods of using those compositions as bonding compositions are provided. The compositions comprise a polymer dispersed or dissolved in a solvent system, and can be used to bond an active wafer to a carrier wafer or substrate to assist in protecting the active wafer and its active sites during subsequent processing and handling. The compositions form bonding layers that are chemically and thermally resistant, but that can also be softened to allow the wafers to slide apart at the appropriate stage in the fabrication process.
    Type: Application
    Filed: April 29, 2010
    Publication date: August 19, 2010
    Applicant: BREWER SCIENCE INC.
    Inventors: Sunil K. Pillalamarri, Chenghong Li
  • Patent number: 7713835
    Abstract: New spin-on, bonding compositions and methods of using those compositions are provided. The cured bonding compositions comprise a crosslinked oxazoline (either crosslinked with another oxazoline or with a crosslinking agent), and can be used to bond an active wafer to a carrier wafer or substrate to assist in protecting the active wafer and its active sites during subsequent processing and handling. The compositions form bonding layers that are chemically and thermally resistant, but that can be thermally decomposed at 285° C. or higher to allow the wafers to slide apart at the appropriate stage in the fabrication process.
    Type: Grant
    Filed: October 3, 2007
    Date of Patent: May 11, 2010
    Assignee: Brewer Science Inc.
    Inventor: Sunil K. Pillalamarri
  • Publication number: 20090038750
    Abstract: New compositions and methods of using those compositions as bonding compositions are provided. The compositions are preferably thermoplastic and comprise imides, amideimides, and/or amideimide-siloxanes (either in polymeric or oligomeric form) dispersed or dissolved in a solvent system, and can be used to bond an active wafer to a carrier wafer or substrate to assist in protecting the active wafer and its active sites during subsequent processing and handling. The compositions form bonding layers that are chemically and thermally resistant, but that can also be softened to allow the wafers to slide apart at the appropriate stage in the fabrication process.
    Type: Application
    Filed: June 25, 2008
    Publication date: February 12, 2009
    Inventors: Wenbin Hong, Sunil K. Pillalamarri
  • Publication number: 20080200011
    Abstract: New compositions and methods of using those compositions as bonding compositions are provided. The compositions comprise a polymer dispersed or dissolved in a solvent system, and can be used to bond an active wafer to a carrier wafer or substrate to assist in protecting the active wafer and its active sites during subsequent processing and handling. The compositions form bonding layers that are chemically and thermally resistant, but that can also be softened to allow the wafers to slide apart at the appropriate stage in the fabrication process.
    Type: Application
    Filed: June 14, 2007
    Publication date: August 21, 2008
    Inventors: Sunil K. Pillalamarri, Chenghong Li
  • Publication number: 20080173970
    Abstract: New spin-on, bonding compositions and methods of using those compositions are provided. The cured bonding compositions comprise a crosslinked oxazoline (either crosslinked with another oxazoline or with a crosslinking agent), and can be used to bond an active wafer to a carrier wafer or substrate to assist in protecting the active wafer and its active sites during subsequent processing and handling. The compositions form bonding layers that are chemically and thermally resistant, but that can be thermally decomposed at 285° C. or higher to allow the wafers to slide apart at the appropriate stage in the fabrication process.
    Type: Application
    Filed: October 3, 2007
    Publication date: July 24, 2008
    Inventor: Sunil K. Pillalamarri