Patents by Inventor Narasimharao Dontula

Narasimharao Dontula 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).

  • Publication number: 20190337694
    Abstract: A multilayer structure including, in order, a first passive moisture barrier layer, a second passive moisture barrier layer, a first active moisture barrier layer including a first moisture absorbing composition and a cyclic olefin copolymer, and a third passive moisture barrier layer. The first, second and third passive moisture barrier layers and the first active moisture barrier layer are contiguous, non-contiguous or combinations thereof.
    Type: Application
    Filed: July 16, 2019
    Publication date: November 7, 2019
    Inventor: Narasimharao DONTULA
  • Publication number: 20170080691
    Abstract: A multilayer nonporous oxygen absorbing structure that resists delamination, e.g., humidity induced delamination, including a first layer having a first continuous polymer phase, a first water insoluble, dispersed, polyether resin phase in the first continuous polymer phase, and a water activated oxygen absorber, and a second layer having a second continuous polymer phase, bonded to the first layer.
    Type: Application
    Filed: November 29, 2016
    Publication date: March 23, 2017
    Inventor: Narasimharao Dontula
  • Patent number: 8969244
    Abstract: A thermal dye image receiver element has a substrate comprising a voided compliant layer and metalized layer. Disposed on the metalized layer is an opacifying layer that includes an opacifying agent and a dye receiving layer. This thermal dye image receiver element can be a duplex element with image receiving layers on both sides of the substrate, and it can be used in association with a thermal donor element to provide a thermal image on either or opposing sides of the receiver element. The metalized layer provides increased specular reflectance under resulting thermal dye images.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: March 3, 2015
    Assignee: Kodak Alaris Inc.
    Inventors: Narasimharao Dontula, Somsack Chang, James S. Honan
  • Publication number: 20140071218
    Abstract: A thermal dye image receiver element has a substrate comprising a voided compliant layer and metalized layer. Disposed on the metalized layer is an opacifying layer that includes an opacifying agent and a dye receiving layer. This thermal dye image receiver element can be a duplex element with image receiving layers on both sides of the substrate, and it can be used in association with a thermal donor element to provide a thermal image on either or opposing sides of the receiver element. The metalized layer provides increased specular reflectance under resulting thermal dye images.
    Type: Application
    Filed: September 13, 2012
    Publication date: March 13, 2014
    Inventors: Narasimharao Dontula, Somsack Chang, James S. Honan
  • Patent number: 8435925
    Abstract: An imaging element has a substrate, an extruded, non-voided compliant layer and an image receiving layer. The extruded, non-voided compliant layer has a heat of fusion of equal to or greater than 0 and up to and including 45 joules/g of compliant layer as determined in a temperature range of from 25° C. to 147° C. by ASTM method D3418-08 and a tensile modulus value of less than 5×1010 dynes/cm2. These imaging elements can be used as thermal dye image transfer receiver elements to provide an image in combination with a thermal dye donor element in a thermal dye transfer process.
    Type: Grant
    Filed: June 25, 2010
    Date of Patent: May 7, 2013
    Assignee: Eastman Kodak Company
    Inventors: Narasimharao Dontula, Somsack Chang, Jeffrey R. Gillmor
  • Patent number: 8377846
    Abstract: An image receiving element is a composite of two or more extruded layers on a support including, in order, an extruded compliant layer, an extruded antistatic tie layer, and an image receiving layer that may also be extruded. The extruded compliant layer is non-voided and comprises from about 10 to about 40 weight % of at least one elastomeric polymer. This image receiving element can be disposed on a support to form a thermal dye transfer receiver element, an electrophotographic image receiver element, or a thermal wax receiver element. Two or more extruded layers can be co-extruded.
    Type: Grant
    Filed: June 24, 2009
    Date of Patent: February 19, 2013
    Assignee: Eastman Kodak Company
    Inventors: Narasimharao Dontula, Somsack Chang, Brian Thomas
  • Patent number: 8345075
    Abstract: A duplex thermal dye transfer element has a substrate, a non-voided compliant layer and a thermal dye image receiving layer. These imaging elements can be imaged on either or both sides in combination with one or more thermal dye donor elements in a thermal dye transfer process. Imaging can form a dye image or transfer clear films or laminates or metalized layers to either or both sides of the substrate.
    Type: Grant
    Filed: April 27, 2011
    Date of Patent: January 1, 2013
    Assignee: Eastman Kodak Company
    Inventors: Narasimharao Dontula, Richard S. Paoletti, Steven J. Tomanovich
  • Patent number: 8329616
    Abstract: An image receiving element has an extruded compliant layer, an extruded image receiving layer, and a topcoat immediately adjacent the extruded image receiving layer. The extruded image receiving layer is non-crosslinked and has a glass transition temperature (Tg) of from about 40° C. to about 80° C. whereas the topcoat is an aqueous-coated layer and has a Tg that is within a range of plus or minus 10° C. of the Tg of the extruded image receiving layer. The dry thickness ratio of the topcoat to the extruded image receiving layer is from 1:2 to 1:20.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: December 11, 2012
    Assignee: Eastman Kodak Company
    Inventors: Debasis Majumdar, Narasimharao Dontula, Kevin M. Ryan, Somsack Chang
  • Publication number: 20120274719
    Abstract: A duplex thermal dye transfer element has a substrate, a non-voided compliant layer and a thermal dye image receiving layer. These imaging elements can be imaged on either or both sides in combination with one or more thermal dye donor elements in a thermal dye transfer process. Imaging can form a dye image or transfer clear films or laminates or metalized layers to either or both sides of the substrate.
    Type: Application
    Filed: April 27, 2011
    Publication date: November 1, 2012
    Inventors: Narasimharao Dontula, Richard S. Paoletti, Steven J. Tomanovich
  • Patent number: 8258078
    Abstract: An image receiving element is a composite of multiple layers on a support including, in order, an extruded compliant layer, an aqueous-coated subbing layer, and an image receiving layer that may also be extruded. The extruded compliant layer is non-voided and comprises from about 10 to about 40 weight % of at least one elastomeric polymer. This image receiving element can be disposed on a support to form a thermal dye transfer receiver element, an electrophotographic image receiver element, or a thermal wax receiver element. Excellent adhesion is provided between the extruded compliant layer and the image receiving layer by means of the aqueous-coated subbing layer.
    Type: Grant
    Filed: August 27, 2009
    Date of Patent: September 4, 2012
    Assignee: Eastman Kodak Company
    Inventors: Narasimharao Dontula, Debasis Majumdar, Brian Thomas, Somsack Chang
  • Publication number: 20110318491
    Abstract: An imaging element has a substrate, an extruded, non-voided compliant layer and an image receiving layer. The extruded, non-voided compliant layer has a heat of fusion of equal to or greater than 0 and up to and including 45 joules/g of compliant layer as determined in a temperature range of from 25° C. to 147° C. by ASTM method D3418-08 and a tensile modulus value of less than 5×1010 dynes/cm2. These imaging elements can be used as thermal dye image transfer receiver elements to provide an image in combination with a thermal dye donor element in a thermal dye transfer process.
    Type: Application
    Filed: June 25, 2010
    Publication date: December 29, 2011
    Inventors: Narasimharao Dontula, Somsack Chang, Jeffrey R. Gillmor
  • Publication number: 20110244149
    Abstract: An image receiving element has an extruded compliant layer, an extruded image receiving layer, and a topcoat immediately adjacent the extruded image receiving layer. The extruded image receiving layer is non-crosslinked and has a glass transition temperature (Tg) of from about 40° C. to about 80° C. whereas the topcoat is an aqueous-coated layer and has a Tg that is within a range of plus or minus 10° C. of the Tg of the extruded image receiving layer. The dry thickness ratio of the topcoat to the extruded image receiving layer is from 1:2 to 1:20.
    Type: Application
    Filed: March 31, 2010
    Publication date: October 6, 2011
    Inventors: Debasis Majumdar, Narasimharao Dontula, Kevin M. Ryan, Somsack Chang
  • Patent number: 7993559
    Abstract: A method of co-extrusion is used to prepare a thermal imaging element such as a thermal dye receiver element. In this method, two or three of an image receiving layer, an antistatic tie layer, and a compliant layer are co-extruded and these co-extruded multiple layers can be disposed on a support to provide a smooth outer surface and reduced delamination among layers especially in a high humidity environment.
    Type: Grant
    Filed: June 24, 2009
    Date of Patent: August 9, 2011
    Assignee: Eastman Kodak Company
    Inventors: Narasimharao Dontula, Somsack Chang, Brian Thomas
  • Patent number: 7910519
    Abstract: The present invention relates to an image recording element comprising a support having thereon an aqueous subbing layer and an extruded dye receiving layer, wherein the image recording element is a thermal dye receiver. The present invention also relates to a method of making a thermal dye receiving element comprising providing a support for an imaging element; applying an aqueous subbing layer to the support; and extruding thereon at least one thermal dye receiving layer.
    Type: Grant
    Filed: March 5, 2007
    Date of Patent: March 22, 2011
    Assignee: Eastman Kodak Company
    Inventors: Debasis Majumdar, Narasimharao Dontula
  • Publication number: 20110052843
    Abstract: An image receiving element is a composite of multiple layers on a support including, in order, an extruded compliant layer, an aqueous-coated subbing layer, and an image receiving layer that may also be extruded. The extruded compliant layer is non-voided and comprises from about 10 to about 40 weight % of at least one elastomeric polymer. This image receiving element can be disposed on a support to form a thermal dye transfer receiver element, an electrophotographic image receiver element, or a thermal wax receiver element. Excellent adhesion is provided between the extruded compliant layer and the image receiving layer by means of the aqueous-coated subbing layer.
    Type: Application
    Filed: August 27, 2009
    Publication date: March 3, 2011
    Inventors: Narasimharao Dontula, Debasis Majumdar, Brian Thomas, Somsack Chang
  • Patent number: 7867603
    Abstract: The invention relates to a toner receiver member comprising a base, at least one tie layer adjacent to said base, and at least one toner receiver layer adjacent said at least one tie layer on the side opposite to the base, wherein said at least one toner receiver layer comprises a layer of branched polyester or a mixture of styrene acrylate copolymer with an ethylene methacrylate copolymer or with a low density polyethylene.
    Type: Grant
    Filed: November 30, 2004
    Date of Patent: January 11, 2011
    Assignee: Eastman Kodak Company
    Inventors: Narasimharao Dontula, Terry A. Heath, Charles L. Bauer, Michael R. Brickey, Jeffrey R. Gillmor, Teh-Ming Kung
  • Publication number: 20100327480
    Abstract: A method of co-extrusion is used to prepare a thermal imaging element such as a thermal dye receiver element. In this method, two or three of an image receiving layer, an antistatic tie layer, and a compliant layer are co-extruded and these co-extruded multiple layers can be disposed on a support to provide a smooth outer surface and reduced delamination among layers especially in a high humidity environment.
    Type: Application
    Filed: June 24, 2009
    Publication date: December 30, 2010
    Inventors: Narasimharao Dontula, Somsack Chang, Brian Thomas
  • Publication number: 20100330306
    Abstract: An image receiving element is a composite of two or more extruded layers on a support including, in order, an extruded compliant layer, an extruded antistatic tie layer, and an image receiving layer that may also be extruded. The extruded compliant layer is non-voided and comprises from about 10 to about 40 weight % of at least one elastomeric polymer. This image receiving element can be disposed on a support to form a thermal dye transfer receiver element, an electrophotographic image receiver element, or a thermal wax receiver element. Two or more extruded layers can be co-extruded.
    Type: Application
    Filed: June 24, 2009
    Publication date: December 30, 2010
    Inventors: Narasimharao Dontula, Somsack Chang, Brian Thomas
  • Patent number: 7838106
    Abstract: The present invention relates to an image receiver element comprising a single low density layer, wherein the single low density layer comprises non-crosslinked aliphatic polyester containing non-interconnected void space, and wherein the single low density layer does not absorb more than 3 weight % moisture at 80% RH and 21.3° C. as compared to the weight % moisture of said single low density layer at 20% RH and 21.3° C. The invention relates to a method of forming such an image receiver element, a printing system comprising an imaging material and the image receiver element, and a method of printing comprising obtaining an imaging material comprising a colorant layer; obtaining the image receiver element; superposing the colorant layer with the receiver element; and transferring colorant from the imaging material to the image receiver element.
    Type: Grant
    Filed: December 19, 2007
    Date of Patent: November 23, 2010
    Assignee: Eastman Kodak Company
    Inventors: Narasimharao Dontula, Somsack Chang, Richard D. Bomba, Terry A. Heath
  • Patent number: 7824030
    Abstract: An inkjet recording element comprising a support extrusion coated with a porous hydrophilic material. The composition comprises a hydrophilic thermoplastic polymer and blends thereof. Also disclosed are methods for making and a method of printing on the inkjet recording element.
    Type: Grant
    Filed: August 23, 2005
    Date of Patent: November 2, 2010
    Assignee: Eastman Kodak Company
    Inventors: Thomas M. Laney, Narasimharao Dontula, Kenneth W. Best, Jr.