Patents by Inventor Ramesh Jagannathan

Ramesh Jagannathan 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: 20050018013
    Abstract: Authentication systems, apparatus, and methods authenticate an identification marking including a nanocrystalline material. One or more properties of the marking are ascertained to provide a measured profile. The measured profile is compared to at least one member of a closed set of reference profiles. Each reference profile has predetermined values of one or more properties. Each reference profile is unique within the set. At least one reference profile is characteristic of an indicator material in a nanocrystalline morphology and non-characteristic of the same indicator material in a bulk morphology.
    Type: Application
    Filed: July 23, 2003
    Publication date: January 27, 2005
    Inventors: David Nelson, Seshadri Jagannathan, Ramesh Jagannathan, Thomas Blanton, Sridhar Sadasivan, Byron Sever, David Tuschel
  • Patent number: 6843556
    Abstract: A system (10) produces patterned deposition on a substrate (14) from compressed fluids. A delivery system (12) cooperates with an independently controlled first chamber and an independently controlled second chamber retaining a substrate (14) for receiving precipitated functional material along a fluid flow delivery (13) from the delivery system (12). A shadow mask (22) is arranged in close proximity to the substrate (14) for forming the patterned deposition on the substrate (14).
    Type: Grant
    Filed: December 6, 2002
    Date of Patent: January 18, 2005
    Assignee: Eastman Kodak Company
    Inventors: David J. Nelson, Suresh Sunderrajan, Ramesh Jagannathan, Seshadri Jagannathan, Glen C. Irvin, Jr., Sridhar Sadasivan, Rajesh V. Mehta, John E. Rueping
  • Publication number: 20050008424
    Abstract: An article having multiple spectral deposits is provided. The article can include a support and a single nanomorphic marking material adapted to reflect light having a first spectral content and adapted to reflect light having a second spectral content. The article can include a support and a nanomorphic marking material held by the support that luminesces at a plurality of wavelengths. The article can include a support and marking material having a first particle size and a second particle size. The first particle size reflects a first spectrum and the second particle size reflects a second spectrum. The article can include a support and a marking material held by said support with the marking material including a nanocrystalline particulate having a measurable property non-characteristic of the same marking material in a bulk state.
    Type: Application
    Filed: June 24, 2003
    Publication date: January 13, 2005
    Inventors: David Nelson, Sridhar Sadasivan, Ramesh Jagannathan, Seshardi Jagannathan, Glen Irvin, Rajesh Mehta
  • Publication number: 20040265478
    Abstract: An apparatus and method of color tuning a light emitting display are provided. The apparatus includes a source of a mixture of a compressed fluid solvent and an organic material. A discharge device is positioned in fluid communication with the source of the mixture of the compressed fluid and the organic material. A condition controlling device is positioned in fluid communication between the source and the discharge device. The method includes providing a substrate, providing a first addressing electrode on the substrate, controllably depositing an organic nanomorphic material over the first addressing electrode, and providing a second addressing electrode over the organic nanomorphic material.
    Type: Application
    Filed: June 24, 2003
    Publication date: December 30, 2004
    Applicant: Eastman Kodak Company
    Inventors: Sridhar Sadasivan, Ramesh Jagannathan, Seshadri Jagannathan, David J. Nelson, Rajesh V. Mehta, Glen C. Irvin, Thomas N. Blanton, Robert S. Cupello
  • Publication number: 20040263597
    Abstract: An apparatus and method of producing multiple spectral reflectance deposits from a mixture of a compressed fluid and a marking material are provided. The method includes providing a receiver; controllably depositing a marking material on the receiver by delivering a mixture of a compressed fluid solvent and the marking material toward the receiver, the mixture being contained under a first condition prior to delivery toward the receiver, the marking material becoming free of the compressed fluid solvent prior to reaching the receiver; and controllably depositing the marking material on the receiver by delivering the mixture of the compressed fluid solvent and the marking material toward the receiver, the mixture being contained under a second condition prior to delivery toward the receiver, the marking material becoming free of the compressed fluid solvent prior to reaching the receiver, the second condition being distinct from the first condition.
    Type: Application
    Filed: June 24, 2003
    Publication date: December 30, 2004
    Applicant: Eastman Kodak Company
    Inventors: David J. Nelson, Sridhar Sadasivan, Ramesh Jagannathan, Seshadri Jagannathan, Glen C. Irvin, Rajesh V. Mehta
  • Publication number: 20040265622
    Abstract: A light emitting display is provided. The light emitting display includes a first addressing electrode and a second addressing electrode. A nanomorphic material layer can be positioned between the first addressing electrode and the second addressing electrode. Alternatively, a material can be positioned between the first addressing electrode and the second addressing electrode with the material luminescing at a plurality of wavelengths.
    Type: Application
    Filed: June 24, 2003
    Publication date: December 30, 2004
    Applicant: Eastman Kodak Company
    Inventors: Sridhar Sadasivan, Ramesh Jagannathan, Seshadri Jagannathan, David J. Nelson, Rajesh V. Mehta, Glen C. Irvin
  • Patent number: 6790483
    Abstract: A method produces patterned deposition on a substrate (14) from compressed fluid. A delivery system (12) cooperates with a controlled environment (30, 100, 200) retaining a substrate (14) for receiving precipitated functional material 44 along a fluid delivery path (13) from the delivery system (12). A mask (22) is arranged in close proximity to the substrate (14) for forming the patterned deposition on the substrate (14).
    Type: Grant
    Filed: December 6, 2002
    Date of Patent: September 14, 2004
    Assignee: Eastman Kodak Company
    Inventors: Ramesh Jagannathan, Suresh Sunderrajan, Seshadri Jagannathan, Glen C. Irvin, Jr., Sridhar Sadasivan, David J. Nelson, Rajesh V. Mehta, John E. Rueping
  • Patent number: 6780249
    Abstract: A system (10) produces patterned deposition on a substrate (14) from supercritical fluids. A delivery system (12) cooperates with a partial enclosure environment (30, 100, 200) retaining a movable substrate (14) for receiving precipitated functional material (44) along a fluid delivery path (13) from the delivery system (12). A shadow mask (22) is arranged in close proximity to the movable substrate (14) for forming the patterned deposition on the movable substrate (14).
    Type: Grant
    Filed: December 6, 2002
    Date of Patent: August 24, 2004
    Assignee: Eastman Kodak Company
    Inventors: David J. Nelson, Suresh Sunderrajan, Ramesh Jagannathan, Seshadri Jagannathan, Glen C. Irvin, Jr., Sridhar Sadasivan, Rajesh V. Mehta, John E. Rueping
  • Patent number: 6752484
    Abstract: An apparatus and method of delivering a functional material is provided. The apparatus includes a pressurized source of fluid in a thermodynamically stable mixture with a functional material. A discharge device having an inlet and an outlet is connected to the pressurized source at the inlet. The discharge device is shaped to produce a collimated beam of functional material, where the fluid is in a gaseous state at a location before or beyond the outlet of the discharge device. A beam control device is positioned proximate to the outlet of the discharge device such that the collimated beam of functional material is controlled after the collimated beam of functional material moves through the outlet of the discharge device.
    Type: Grant
    Filed: March 6, 2002
    Date of Patent: June 22, 2004
    Assignee: Eastman Kodak Company
    Inventors: Ramesh Jagannathan, Glen C. Irvin, Jr., Seshadri Jagannathan, Sridhar Sadasivan, Suresh Sunderrajan, John E. Rueping, Gary E. Merz
  • Publication number: 20040109049
    Abstract: A system (10) produces patterned deposition on a substrate (14) from compressed fluids. A delivery system (12) cooperates with an independently controlled first chamber and an independently controlled second chamber retaining a substrate (14) for receiving precipitated functional material along a fluid flow delivery (13) from the delivery system (12). A shadow mask (22) is arranged in close proximity to the substrate (14) for forming the patterned deposition on the substrate (14).
    Type: Application
    Filed: December 6, 2002
    Publication date: June 10, 2004
    Applicant: Eastman Kodak Company
    Inventors: David J. Nelson, Suresh Sunderrajan, Ramesh Jagannathan, Seshadri Jagannathan, Glen C. Irvin, Sridhar Sadasivan, Rajesh V. Mehta, John E. Rueping
  • Publication number: 20040109939
    Abstract: A method of forming a color filter is provided. The method includes providing a mixture of a color filter material and a compressed fluid; providing at least a partially controlled environment for retaining a substrate, the at least partially controlled environment being in fluid communication with the mixture of the color filter material and the compressed fluid; providing a shadow mask in close proximity to the substrate retained in the at least partially controlled environment; and chargably releasing the mixture of the color filter material and the compressed fluid into the at least partially controlled environment, wherein the color filter material becomes free of the compressed fluid prior to contacting the substrate at locations defined by the shadow mask thereby forming a patterned deposition on the substrate.
    Type: Application
    Filed: June 12, 2003
    Publication date: June 10, 2004
    Applicant: Eastman Kodak Company
    Inventors: Sridhar Sadasivan, Ramesh Jagannathan, Seshadri Jagannathan, Rajesh Mehta, David J. Nelson, Glen C. Irvin
  • Publication number: 20040109952
    Abstract: A method produces patterned deposition on a substrate (14) from compressed fluid. A delivery system (12) cooperates with a controlled environment (30, 100, 200) retaining a substrate (14) for receiving precipitated functional material 44 along a fluid delivery path (13) from the delivery system (12). A mask (22) is arranged in close proximity to the substrate (14) for forming the patterned deposition on the substrate (14).
    Type: Application
    Filed: December 6, 2002
    Publication date: June 10, 2004
    Applicant: Eastman Kodak Company
    Inventors: Ramesh Jagannathan, Suresh Sunderrajan, Seshadri Jagannathan, Glen C. Irvin, Sridhar Sadasivan, David J. Nelson, Rajesh V. Mehta, John E. Rueping
  • Publication number: 20040110866
    Abstract: An imaging composition comprising a mixture of a solvent and a functional material; wherein the solvent is a compressed fluid and the functional material is a hole transporting material which is dissolved, dispersed and/or solubilized in the compressed fluid; wherein the mixture is thermodynamically stable or thermodynamically metastable or both; wherein the functional material is solvent-free upon deposition on a substrate; and wherein the functional material forms a solid film upon deposition on the substrate.
    Type: Application
    Filed: December 6, 2002
    Publication date: June 10, 2004
    Applicant: Eastman Kodak Company
    Inventors: Glen C. Irvin, Ramesh Jagannathan, Seshadri Jagannathan, Rajesh V. Mehta, Sridhar Sadasivan, Ross A. Sprout, Tin T. Vo
  • Publication number: 20040107903
    Abstract: A system (10) produces patterned deposition on a substrate (14) from supercritical fluids. A delivery system (12) cooperates with a partial enclosure environment (30, 100, 200) retaining a movable substrate (14) for receiving precipitated functional material (44) along a fluid delivery path (13) from the delivery system (12). A shadow mask (22) is arranged in close proximity to the movable substrate (14) for forming the patterned deposition on the movable substrate (14).
    Type: Application
    Filed: December 6, 2002
    Publication date: June 10, 2004
    Applicant: Eastman Kodak Company
    Inventors: David J. Nelson, Suresh Sunderrajan, Ramesh Jagannathan, Seshadri Jagannathan, Glen C. Irvin, Sridhar Sadasivan, Rajesh V. Mehta, John E. Rueping
  • Publication number: 20040108060
    Abstract: A system (10) produces patterned deposition on a substrate (14) from compressed fluids. A delivery system (12) cooperates with a controlled environment (30, 100, 200) retaining a substrate (14) for receiving precipitated functional material (44) along a fluid delivery path (13) from the delivery system (12). A mask (22) is arranged in close proximity to the substrate (14) for forming the patterned deposition on the substrate (14).
    Type: Application
    Filed: December 6, 2002
    Publication date: June 10, 2004
    Applicant: Eastman Kodak Company
    Inventors: Suresh Sunderrajan, David J. Nelson, Ramesh Jagannathan, Seshadri Jagannathan, Glen C. Irvin, Sridhar Sadasivan, Rajesh V. Mehta, John E. Rueping
  • Publication number: 20040109951
    Abstract: An imaging composition comprising a mixture of a solvent and a functional material; wherein the solvent is a compressed fluid and the functional material is an electroluminescent polymeric material which is dissolved, dispersed and/or solubilized in the compressed fluid; wherein the mixture is thermodynamically stable or thermodynamically metastable or both; wherein the functional material is solvent-free upon deposition on a substrate; and wherein the functional material forms a solid film upon deposition on the substrate.
    Type: Application
    Filed: December 6, 2002
    Publication date: June 10, 2004
    Applicant: Eastman Kodak Company
    Inventors: Glen C. Irvin, Sridhar Sadasiva, Ramesh Jagannathan
  • Publication number: 20040108510
    Abstract: An imaging composition comprising a mixture of a solvent and a functional material; wherein the solvent is a compressed fluid and the functional material is a electron transporting material which is dissolved, dispersed and/or solubilized in the compressed fluid; wherein the mixture is thermodynamically stable or thermodynamically metastable or both; wherein the functional material is solvent-free upon deposition on a substrate; and wherein the functional material forms a solid film upon deposition on the substrate.
    Type: Application
    Filed: December 6, 2002
    Publication date: June 10, 2004
    Applicant: Eastman Kodak Company
    Inventors: Glen C. Irvin, Ramesh Jagannathan, Seshadri Jagannathan, Rajesh V. Mehta, Sridhar Sadasivan, Ross A. Sprout, Tin T. Vo
  • Publication number: 20040110028
    Abstract: An imaging composition comprising a mixture of a solvent and a functional material; wherein the solvent is a compressed fluid and the functional material is a hole injecting material which is dissolved, dispersed and/or solubilized in the compressed fluid; wherein the mixture is thermodynamically stable or thermodynamically metastable or both; wherein the functional material is solvent-free upon deposition on a substrate; and wherein the functional material forms a solid film upon deposition on the substrate.
    Type: Application
    Filed: December 6, 2002
    Publication date: June 10, 2004
    Applicant: Eastman Kodak Company
    Inventors: Glen C. Irvin, Ramesh Jagannathan, Seshadri Jagannathan, Rajesh V. Mehta, Sridhar Sadasivan, Ross A. Sprout, Tin T. Vo
  • Publication number: 20040108061
    Abstract: A method and an apparatus for making a light emitting display is provided. The apparatus includes a discharge device with an inlet and an outlet with the portion of the discharge device defining a delivery path. An actuating mechanism is moveably positioned along the delivery path. A substrate retaining device is positioned spaced apart from the outlet of the discharge device in the delivery path. The inlet of the discharge device is adapted to be connected to a pressurized source of a thermodynamically stable mixture of a compressed fluid and one of a hole transporting material, a light emitting material, and an electron transporting material. The compressed fluid is in a gaseous state at a location beyond the outlet of the discharge device and prior to the substrate retaining device.
    Type: Application
    Filed: December 6, 2002
    Publication date: June 10, 2004
    Applicant: Eastman Kodak Company
    Inventors: Sridhar Sadasivan, Ramesh Jagannathan, Seshadri Jagannathan, Suresh Sunderrajan, David J. Nelson, Glen C. Irvin, Rajesh V. Mehta
  • Publication number: 20040043138
    Abstract: A method is taught for forming a layer of electroluminescent material having a controlled thickness and surface uniformity. An electroluminescent material is delivered to a vessel. A fluid to the vessel is also delivered to the vessel. The fluid and the electroluminescent material in the vessel are compressed and heated to form a thermodynamically stable or metastable mixture. The thermodynamically stable or metastable mixture is sprayed at a surface, the fluid vaporizing during spraying with the the electroluminescent material being deposited as a light emitting layer of nanoparticulates on the surface.
    Type: Application
    Filed: August 21, 2002
    Publication date: March 4, 2004
    Inventors: Ramesh Jagannathan, Suresh Sunderrajan, Seshadri Jagannathan, Glen C. Irvin, John E. Rueping, Sridhar Sadasivan, Gary E. Merz, David J. Nelson