Patents by Inventor Ramasubramaniam Hanumanthu

Ramasubramaniam Hanumanthu 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: 7108891
    Abstract: A method of making a microarray comprising the steps of: providing a support; coating on the support a receiving layer to receive microspheres, the receiving layer being capable of undergoing sol/gel transition; coating on the receiving layer a dispersion of microspheres in a carrier fluid, wherein the carrier fluid contains at least one crosslinking agent and is capable of solvating the receiving layer; allowing the microspheres to partially submerge into the receiving layer; creating conditions to induce sol/gel transition in the receiving layer, thus immobilizing the microspheres; evaporating off the carrier fluid; and allowing crosslinking reaction between the receiving layer and the crosslinker in the carrier fluid.
    Type: Grant
    Filed: March 7, 2002
    Date of Patent: September 19, 2006
    Assignee: Eastman Kodak Company
    Inventors: Krishnan Chari, Tiecheng A. Qiao, Ramasubramaniam Hanumanthu
  • Publication number: 20050019804
    Abstract: An element containing an array of microspheres on a support is described, and a method of making the element, wherein the method includes coating a support with a coating composition to form a receiving layer with a modifiable elastic modulus; coating on the receiving layer a dispersion of microspheres in a fluid suspension; modifying the modulus of the receiving layer to allow the microspheres to partially submerge into the receiving layer; removing the fluid suspension from the receiving layer; and fixing the microspheres in the receiving layer so that the element can withstand wet processing.
    Type: Application
    Filed: June 15, 2004
    Publication date: January 27, 2005
    Inventors: Krishnan Chari, Zhanjun Gao, Joseph Sedita, Ramasubramaniam Hanumanthu, Charles Lusignan
  • Publication number: 20050019745
    Abstract: A method for making an element containing an array of microspheres on a support, the method comprising the steps of: coating a support with a coating composition to form a receiving layer with a modifiable elastic modulus; coating on the receiving layer a dispersion of microspheres in a carrier fluid; modifying the modulus to allow the microspheres to partially submerge into the intermediate layer; removing the fluid medium from the suspension of microspheres; and fixing the microspheres on the receiving layer so that the element can withstand wet processing.
    Type: Application
    Filed: July 23, 2003
    Publication date: January 27, 2005
    Inventors: Krishnan Chari, Zhanjun Gao, Joseph Sedita, Ramasubramaniam Hanumanthu, Charles Lusignan
  • Publication number: 20030170392
    Abstract: A method of making a microarray comprising the steps of:
    Type: Application
    Filed: March 7, 2002
    Publication date: September 11, 2003
    Applicant: Eastman Kodak Company
    Inventors: Krishnan Chari, Tiecheng A. Qiao, Ramasubramaniam Hanumanthu
  • Patent number: 6582515
    Abstract: A coating element has a liquid deflector member for diverting doctored coating liquid away from the surface of a coating applicator roll. The liquid deflector member is arranged beneath a blade member that removes excess coating liquid from the surface of the coating applicator roll. Excess coating liquid follows a path away from the coating applicator roll surface and down the active face of the liquid deflector member, thereby avoiding contamination of the applicator roll surface.
    Type: Grant
    Filed: December 15, 1999
    Date of Patent: June 24, 2003
    Assignee: Eastman Kodak Company
    Inventors: Ramasubramaniam Hanumanthu, Rukmini B. Lobo, Barry A. Fitzgerald
  • Patent number: 6573011
    Abstract: The invention relates to a packaging label comprising in order an environmental protection layer, an image formed by means of silver halide, a base, an adhesive, and a peelable back wherein said environmental protection layer comprises a mixture of vinyl polymer and urethane polymer wherein said urethane polymer has an indentation modulus less than 0.6 GPa and wherein said environmental protection layer is less than 10 micrometers in thickness.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: June 3, 2003
    Assignee: Eastman Kodak Company
    Inventors: Mridula Nair, Tamara K. Jones, Ramasubramaniam Hanumanthu, Joseph S. Sedita
  • Patent number: 6558466
    Abstract: An apparatus for coating a web of indeterminate length has a coating element comprising a liquid deflector member for diverting liquid away from a coating surface. The liquid deflector member is arranged beneath a blade member that removes excess coating liquid from the coating surface. Excess coating liquid follows a path away from the coating surface and down the liquid deflector member thereby avoiding contamination of the coating surface.
    Type: Grant
    Filed: December 15, 1999
    Date of Patent: May 6, 2003
    Assignee: Eastman Kodak Company
    Inventors: Ramasubramaniam Hanumanthu, Rukmini B. Lobo, Barry A. Fitzgerald
  • Publication number: 20020189539
    Abstract: A coating element has a liquid deflector member for diverting doctored coating liquid away from the surface of a coating applicator roll. The liquid deflector member is arranged beneath a blade member that removes excess coating liquid from the surface of the coating applicator roll. Excess coating liquid follows a path away from the coating applicator roll surface and down the active face of the liquid deflector member, thereby avoiding contamination of the applicator roll surface.
    Type: Application
    Filed: December 15, 1999
    Publication date: December 19, 2002
    Inventors: RAMASUBRAMANIAM HANUMANTHU, RUKMINI B. LOBO, BARRY A. FITZGERALD
  • Publication number: 20020174830
    Abstract: An apparatus for coating a web of indeterminate length has a coating element comprising a liquid deflector member for diverting liquid away from a coating surface. The liquid deflector member is arranged beneath a blade member that removes excess coating liquid from the coating surface. Excess coating liquid follows a path away from the coating surface and down the liquid deflector member thereby avoiding contamination of the coating surface.
    Type: Application
    Filed: December 15, 1999
    Publication date: November 28, 2002
    Inventors: RAMASUBRAMANIAM HANUMANTHU, RUKMINI B. LOBO, BARRY A. FITZGERALD
  • Patent number: 5984539
    Abstract: The present invention relates to a method and apparatus of applying a solution of a predetermined viscosity to photosensitive material to form a protective coating on the photosensitive material. The method and apparatus can be used in a photographic processing device, and the apparatus can be built into an existing or new photographic processor or added on as an accessory. The method and apparatus is utilized to apply a viscous solution to at least one surface of processed photosensitize materials prior to drying in a manner that allows the solution to be uniformly applied to the at least one surface at a specific layer thickness. The viscous solution after drying functions as a protective coating which can protect the processed photosensitize material against scratches and moisture.
    Type: Grant
    Filed: November 6, 1997
    Date of Patent: November 16, 1999
    Assignee: Eastman Kodak Company
    Inventors: David L. Patton, Anne E. Bohan, Kevin M. O'Connor, Ralph L. Piccinino, Jr., Gordon F. Breese, Ramasubramaniam Hanumanthu