Patents by Inventor Karkala Arun Kumar

Karkala Arun Kumar 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: 8262381
    Abstract: Mastering tools and systems and methods for forming a cell on the mastering tools are provided. An exemplary method includes emitting a first laser light pulse from a laser for a first predetermined time interval such that at least a portion of the first laser light pulse forms the cell on the mastering tool. The cell has an opening size within a range of 10-100 micrometers and an aspect ratio less than or equal to 1.25.
    Type: Grant
    Filed: June 22, 2006
    Date of Patent: September 11, 2012
    Assignee: Sabic Innovative Plastics IP B.V.
    Inventors: Adel F. Bastawros, Grant Hay, Karkala Arun Kumar, Phil M. Peters
  • Patent number: 8222562
    Abstract: Mastering tools and systems and methods for forming a plurality of cells on the mastering tools are provided. In particular, the systems vary the geometry of the cells or the placement of the cells, or both, for forming a textured surface on a mastering tool.
    Type: Grant
    Filed: September 28, 2010
    Date of Patent: July 17, 2012
    Assignee: Sabic Innovative Plastics IP B.V.
    Inventors: Adel F. Bastawros, Grant Hay, Karkala Arun Kumar, Phil M. Peters
  • Publication number: 20110011837
    Abstract: Mastering tools and systems and methods for forming a plurality of cells on the mastering tools are provided. In particular, the systems vary the geometry of the cells or the placement of the cells, or both, for forming a textured surface on a mastering tool.
    Type: Application
    Filed: September 28, 2010
    Publication date: January 20, 2011
    Applicant: SABIC INNOVATIVE PLASTICS IP B.V.
    Inventors: Adel F. Bastawros, Grant Hay, Karkala Arun Kumar, Phil M. Peters
  • Patent number: 7824747
    Abstract: A light diffusing film for a back light display is described. The light diffusing film includes a unitary film consisting essentially of polycarbonate and a uniformly dispersed anti-static material in an amount sufficient to impart anti-static properties to the film. The anti-static material may comprise a fluorinated phosphonium sulfonate. The film may additionally include at least one textured surface for the low scattering of light. Alternatively, the film may additionally include a uniformly dispersed acrylic bulk scattering additive of particles having a mean particle size of from about 3 to about 10 microns and present in an amount from about 2 to about 7 percent by weight percent for the high scattering of light.
    Type: Grant
    Filed: December 28, 2007
    Date of Patent: November 2, 2010
    Assignee: Sabic Innovative Plastics IP B.V.
    Inventors: Grant Hay, Kevin P. Capaldo, Gheorghe Cojocariu, Karkala Arun Kumar, Theodorus Lambertus Hoeks, Todd M. Loehr, John F. Graf, Nathan D. Hoffman, Scott Leslie, Anshu Ghosal, Philippe Schottland
  • Patent number: 7807938
    Abstract: Mastering tools and systems and methods for forming a plurality of cells on the mastering tools are provided. In particular, the systems vary the geometry of the cells or the placement of the cells, or both, for forming a textured surface on a mastering tool.
    Type: Grant
    Filed: June 22, 2006
    Date of Patent: October 5, 2010
    Assignee: Sabic Innovative Plastics IP B.V.
    Inventors: Adel F. Bastawros, Grant Hay, Karkala Arun Kumar, Phil M. Peters
  • Publication number: 20080131625
    Abstract: A light diffusing film for a back light display is described. The light diffusing film includes a unitary film consisting essentially of polycarbonate and a uniformly dispersed anti-static material in an amount sufficient to impart anti-static properties to the film. The anti-static material may comprise a fluorinated phosphonium sulfonate. The film may additionally include at least one textured surface for the low scattering of light. Alternatively, the film may additionally include a uniformly dispersed acrylic bulk scattering additive of particles having a mean particle size of from about 3 to about 10 microns and present in an amount from about 2 to about 7 percent by weight percent for the high scattering of light.
    Type: Application
    Filed: December 28, 2007
    Publication date: June 5, 2008
    Inventors: Grant Hay, Kevin P. Capaldo, Gheorghe Cojocariu, Karkala Arun Kumar, Theodorus Lambertus Hoeks, Todd M. Loehr, John F. Graf, Nathan D. Hoffman, Scott Leslie, Anshu Ghosal, Philippe Schottland
  • Patent number: 7369192
    Abstract: An embodiment of a method of making an optical film comprises heating the optical film comprising greater than or equal to 80 wt. % polycarbonate to a sufficient temperature to stretch the optical film, wherein the weight percent is based on a total weight of the optical film; and stretching the optical film. A resulting stretched optical film has a linear CTE measured in a direction parallel to a stretching direction of less than or equal to 50×10?6 cm/cm/° C.
    Type: Grant
    Filed: June 7, 2007
    Date of Patent: May 6, 2008
    Assignee: General Electric Company
    Inventors: Nickey Ambrose, Grant Hay, Eugene David Herrmann, Karkala Arun Kumar, Philip Matthew Peters, Joe Riello
  • Patent number: 7314652
    Abstract: A light diffusing film for a back light display is described. The light diffusing film includes a unitary film consisting essentially of polycarbonate and a uniformly dispersed anti-static material in an amount sufficient to impart anti-static properties to the film. The anti-static material may comprise a fluorinated phosphonium sulfonate. The film may additionally include at least one textured surface for the low scattering of light. Alternatively, the film may additionally include a uniformly dispersed acrylic bulk scattering additive of particles having a mean particle size of from about 3 to about 10 microns and present in an amount from about 2 to about 7 percent by weight percent for the high scattering of light.
    Type: Grant
    Filed: February 27, 2004
    Date of Patent: January 1, 2008
    Assignee: General Electric Company
    Inventors: Grant Hay, Kevin P. Capaldo, Gheorghe Cojocariu, Karkala Arun Kumar, Theodorus Lambertus Hoeks, Todd M. Loehr, John F. Graf, Nathan D. Hoffman, Scott Leslie, Anshu Ghosal, Philippe Schottland
  • Publication number: 20070297480
    Abstract: Mastering tools and systems and methods for forming a cell on the mastering tools are provided. An exemplary method includes emitting a first laser light pulse from a laser for a first predetermined time interval such that at least a portion of the first laser light pulse forms the cell on the mastering tool. The cell has an opening size within a range of 10-100 micrometers and an aspect ratio less than or equal to 1.25.
    Type: Application
    Filed: June 22, 2006
    Publication date: December 27, 2007
    Inventors: Adel F. Bastawros, Grant Hay, Karkala Arun Kumar, Phil M. Peters
  • Publication number: 20070297060
    Abstract: Mastering tools and systems and methods for forming a plurality of cells on the mastering tools are provided. In particular, the systems vary the geometry of the cells or the placement of the cells, or both, for forming a textured surface on a mastering tool.
    Type: Application
    Filed: June 22, 2006
    Publication date: December 27, 2007
    Inventors: Adel F. Bastawros, Grant Hay, Karkala Arun Kumar, Phil M. Peters
  • Publication number: 20070281129
    Abstract: In one embodiment, the diffuser film comprises a polymer composition, a first surface, and a second surface opposite the first surface. The diffuser film is capable of diffusing light. The diffuser film, without a coating, has a film haze of about 10% to about 80%, and has no visible mura defects under panel observation as determined with a backlight display having a center brightness of about 6,000 nit to about 6,300 nit.
    Type: Application
    Filed: June 6, 2006
    Publication date: December 6, 2007
    Inventors: Chi Kwong Chan, Yaowen Bai, Jinghui Xu, Adel Bastawros, Karkala Arun Kumar
  • Patent number: 7280170
    Abstract: A method of making an optical film comprises heating the optical film comprising greater than or equal to 80 wt. % polycarbonate to a sufficient temperature to stretch the optical film, wherein the weight percent is based on a total weight of the optical film; and stretching the optical film, wherein a resulting stretched optical film has a linear CTE measured in a direction parallel to a stretching direction of less than or equal to 50×10?6 cm/cm/° C.
    Type: Grant
    Filed: July 20, 2004
    Date of Patent: October 9, 2007
    Assignee: General Electric Company
    Inventors: Nickey Ambrose, Grant Hay, Eugene David Herrmann, Karkala Arun Kumar, Philip Matthew Peters, Joe Riello
  • Patent number: 7280277
    Abstract: A light collimating and diffusing film and a method for making the film are provided. The film includes a plastic layer having a first side and a second side opposite the first side and at least a first peripheral edge. The first side has a first textured surface, wherein between 7 to 20 percent of slope angles on the first textured surface proximate a first axis has a value between zero and five degrees. The first axis is substantially parallel to the first peripheral edge. The plastic layer collimates light propagating therethrough.
    Type: Grant
    Filed: May 8, 2006
    Date of Patent: October 9, 2007
    Assignee: General Electric Company
    Inventors: Adel F. Bastawros, Kevin P. Capaldo, Ashwit Dias, John Graf, Emine Elif Gurel, Grant Hay, Marshall Gordon Jones, Karkala Arun Kumar, Steven Alfred Tysoe, Masako Yamada
  • Patent number: 7092163
    Abstract: A light collimating and diffusing film and a method for making the film are provided. The film includes a plastic layer having a first side and a second side opposite the first side and at least a first peripheral edge. The first side has a first textured surface, wherein between 7 to 20 percent of slope angles on the first textured surface proximate a first axis has a value between zero and five degrees. The first axis is substantially parallel to the first peripheral edge. The plastic layer collimates light propagating therethrough.
    Type: Grant
    Filed: July 22, 2004
    Date of Patent: August 15, 2006
    Assignee: General Electric Company
    Inventors: Adel F. Bastawros, Kevin P. Capaldo, Gheorghe Cojocariu, Ashwit Dias, John Graf, Emine Elif Gurel, Grant Hay, Marshall Gordon Jones, Karkala Arun Kumar, Todd Morris Loehr, Steven Alfred Tysoe, Masako Yamada
  • Publication number: 20040228141
    Abstract: A light diffusing film for a back light display is described. The light diffusing film includes a unitary film consisting essentially of polycarbonate and a uniformly dispersed anti-static material in an amount sufficient to impart anti-static properties to the film. The anti-static material may comprise a fluorinated phosphonium sulfonate. The film may additionally include at least one textured surface for the low scattering of light. Alternatively, the film may additionally include a uniformly dispersed acrylic bulk scattering additive of particles having a mean particle size of from about 3 to about 10 microns and present in an amount from about 2 to about 7 percent by weight percent for the high scattering of light.
    Type: Application
    Filed: February 27, 2004
    Publication date: November 18, 2004
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Grant Hay, Kevin P. Capaldo, Gheorghe Cojocariu, Karkala Arun Kumar, Theodorus Lambertus Hoeks, Todd M. Loehr, John F. Graf, Nathan D. Hoffman, Scott Leslie, Anshu Ghosal, Philippe Schottland