Patents by Inventor Charles W. Lander

Charles W. Lander 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: 7931515
    Abstract: A method of manufacturing a micro-lens array and light-emitting device, comprising forming a first structured polymer film with close packed surface cavities having a mean diameter of less than 20 micrometers and a relatively lower surface energy surface, forming a transparent second structured film with an array of microlenses formed thereon corresponding to the cavities of the first structured film, wherein the second structured film comprises a relatively high surface energy material and has a refractive index greater than 1.45, and wherein the microlenses are randomly distributed, separating the second structured film with the micro-lens array from the first structured polymer film, and attaching the second structured film to a transparent substrate or cover of a light-emitting device through which light is emitted.
    Type: Grant
    Filed: May 21, 2010
    Date of Patent: April 26, 2011
    Assignee: Global OLED Technology LLC
    Inventors: Krishnan Chari, Charles W. Lander, Liang-Sheng Liao, Paul D. Yacobucci
  • Publication number: 20100224313
    Abstract: A method of manufacturing a micro-lens array and light-emitting device, comprising forming a first structured polymer film with close packed surface cavities having a mean diameter of less than 20 micrometers and a relatively lower surface energy surface, forming a transparent second structured film with an array of microlenses formed thereon corresponding to the cavities of the first structured film, wherein the second structured film comprises a relatively high surface energy material and has a refractive index greater than 1.45, and wherein the microlenses are randomly distributed, separating the second structured film with the micro-lens array from the first structured polymer film, and attaching the second structured film to a transparent substrate or cover of a light-emitting device through which light is emitted.
    Type: Application
    Filed: May 21, 2010
    Publication date: September 9, 2010
    Inventors: Krishnan Chari, Charles W. Lander, Liang-Sheng Liao, Paul D. Yacobucci
  • Patent number: 7777416
    Abstract: A method of manufacturing a micro-lens array and light-emitting device, including forming a first structured polymer film with close packed surface cavities having a mean diameter of less than 20 micrometers and a relatively lower surface energy surface, forming a transparent second structured film with an array of microlenses formed thereon corresponding to the cavities of the first structured film, wherein the second structured film includes a relatively high surface energy material and has a refractive index greater than 1.45, and wherein the microlenses are randomly distributed, separating the second structured film with the micro-lens array from the first structured polymer film, and attaching the second structured film to a transparent substrate or cover of a light-emitting device through which light is emitted.
    Type: Grant
    Filed: June 14, 2007
    Date of Patent: August 17, 2010
    Assignee: Global Oled Technology LLC
    Inventors: Krishnan Chari, Charles W. Lander, Liang-Sheng Liao, Paul D. Yacobucci
  • Patent number: 7754295
    Abstract: The present invention relates to a display comprising at least one substrate, at least one electronically modulated imaging layer and at least one electrically conductive layer, wherein the electronically modulated imaging layer comprises a self-assembled, close-packed, ordered monolayer of domains of guest-host material, wherein the guest-host material comprises a dichroic or pleochroic dye guest in a light modulating host in a fixed polymer matrix, and wherein the appearance of the display is independent of viewing angle.
    Type: Grant
    Filed: June 29, 2006
    Date of Patent: July 13, 2010
    Assignee: Industrial Technology Research Institute
    Inventors: Krishnan Chari, Charles W. Lander
  • Patent number: 7722790
    Abstract: An LC display comprises in order (a) a light source, (b) a transparent polymeric film bearing on the light exit surface of the film an array of close-packed convex microlenses having a distribution of sizes and oriented in one direction, whereby the light output is preferentially spread in a desired direction, and (c) an LC panel. A related process and film are also disclosed.
    Type: Grant
    Filed: June 14, 2007
    Date of Patent: May 25, 2010
    Assignee: SKC Haas Display Films Co., Ltd.
    Inventors: Chari Krishnan, Charles W. Lander, Ronald J. Sudol, Jin-Shan Wang, Charles M. Rankin, Jr., Paul D. Yacobucci
  • Publication number: 20090316417
    Abstract: A method for forming a light-redirecting article is provided wherein a surface of a substrate is conditioned by applying a layer of an embedment material. A close-packed layer of microspheres is assembled using drying-assisted self-assembly and applied to the conditioned surface. Microspheres are then embedded halfway into the surface of the layer of the embedment material.
    Type: Application
    Filed: June 20, 2008
    Publication date: December 24, 2009
    Applicant: Rohm and Haas Denmark Finance A/S
    Inventors: Krishnan Chari, Charles W. Lander, Charles C. Anderson
  • Patent number: 7535646
    Abstract: A light-emitting device, comprising: a light emitting element on a first side of a transparent substrate or cover through which light is emitted; and a microlens array on a second side, opposite to the first side, of the transparent substrate or cover though which light is emitted; wherein the microlens array comprises individual hemispherical shaped microlenses having a mean diameter of less than 20 micrometers and a mean microlens height to diameter ratio of greater than 0.30, and has a microlens area fill factor greater than 0.8.
    Type: Grant
    Filed: April 27, 2007
    Date of Patent: May 19, 2009
    Assignee: Eastman Kodak Company
    Inventors: Krishnan Chari, Charles W. Lander, Jin-Shan Wang, Donald R. Preuss, Ronald S. Cok, Yuan-Sheng Tyan, Joel D. Shore
  • Publication number: 20080310186
    Abstract: A method of manufacturing a micro-lens array and light-emitting device, comprising forming a first structured polymer film with close packed surface cavities having a mean diameter of less than 20 micrometers and a relatively lower surface energy surface, forming a transparent second structured film with an array of microlenses formed thereon corresponding to the cavities of the first structured film, wherein the second structured film comprises a relatively high surface energy material and has a refractive index greater than 1.45, and wherein the microlenses are randomly distributed, separating the second structured film with the micro-lens array from the first structured polymer film, and attaching the second structured film to a transparent substrate or cover of a light-emitting device through which light is emitted.
    Type: Application
    Filed: June 14, 2007
    Publication date: December 18, 2008
    Inventors: Krishnan Chari, Charles W. Lander, Liang-Sheng Liao, Paul D. Yacobucci
  • Patent number: 7455886
    Abstract: A method of fabricating a nanocomposite material includes generating nanoparticles in-situ with a polymer. A nanocomposite material includes a polymer having nanoparticles characterized by a dimension of not more than 50 nm.
    Type: Grant
    Filed: August 22, 2005
    Date of Patent: November 25, 2008
    Assignee: Eastman Kodak Company
    Inventors: YuanQiao Rao, Samuel Chen, Charles W. Lander, Tomohiro Ishikawa, Theodore R. Vandam
  • Publication number: 20080278663
    Abstract: An LC display comprises in order (a) a light source, (b) a transparent polymeric film bearing on the light exit surface of the film an array of close-packed convex microlenses having a distribution of sizes and oriented in one direction, whereby the light output is preferentially spread in a desired direction, and (c) an LC panel. A related process and film are also disclosed.
    Type: Application
    Filed: June 14, 2007
    Publication date: November 13, 2008
    Inventors: Chari Krishnan, Charles W. Lander, Ronald J. Sudol, Jin-Shan Wang, Charles M. Rankin, JR., Paul D. Yacobucci
  • Publication number: 20080117519
    Abstract: A light-emitting device, comprising: a light emitting element on a first side of a transparent substrate or cover through which light is emitted; and a microlens array on a second side, opposite to the first side, of the transparent substrate or cover though which light is emitted; wherein the microlens array comprises individual hemispherical shaped microlenses having a mean diameter of less than 20 micrometers and a mean microlens height to diameter ratio of greater than 0.30, and has a microlens area fill factor greater than 0.8.
    Type: Application
    Filed: April 27, 2007
    Publication date: May 22, 2008
    Inventors: Krishnan Chari, Charles W. Lander, Jin-Shan Wang, Donald R. Preuss, Ronald S. Cok, Yuan-Sheng Tyan, Joel D. Shore
  • Publication number: 20080037261
    Abstract: The invention provides a certain type of optical film, processes for making the film, and a backlight device containing the film. The film includes a substantially monolayer arrangement of beads partially submerged in a binder.
    Type: Application
    Filed: August 10, 2006
    Publication date: February 14, 2008
    Inventors: Krishnan Chari, Charles W. Lander, Jin-Shan Wang, Junwon Lee
  • Publication number: 20080003379
    Abstract: The present invention relates to a display comprising at least one substrate, at least one electronically modulated imaging layer and at least one electrically conductive layer, wherein the electronically modulated imaging layer comprises a self-assembled, close-packed, ordered monolayer of domains of guest-host material, wherein the guest-host material comprises a dichroic or pleochroic dye guest in a light modulating host in a fixed polymer matrix, and wherein the appearance of the display is independent of viewing angle.
    Type: Application
    Filed: June 29, 2006
    Publication date: January 3, 2008
    Inventors: Krishnan Chari, Charles W. Lander
  • Patent number: 6551757
    Abstract: A negative-working imaging member can be used as a lithographic printing plate without ablation. The imaging member comprises a support and an imaging layer that includes a dispersion of at least 0.05 g/m2 of a cyanoacrylate polymer that is thermally degradable below 200° C., a photothermal conversion material that is present in an amount to provide a dry weight ratio to the cyanoacrylate polymer of from about 0.02:1 to about 0.8:1, and a hydrophilic binder to provide a dry weight ratio of a hydrophilic binder to the cyanoacrylate polymer of up to 1:1. Thermal imaging energy causes the exposed areas of the imaging layer to adhere to the support while unexposed areas can be readily washed off and/or simultaneously inked for press runs.
    Type: Grant
    Filed: May 24, 2001
    Date of Patent: April 22, 2003
    Assignee: Eastman Kodak Company
    Inventors: David B. Bailey, Charles W. Lander
  • Publication number: 20030064317
    Abstract: A negative-working imaging member can be used as a lithographic printing plate without ablation. The imaging member comprises a support and an imaging layer that includes a dispersion of at least 0.05 g/m2 of a cyanoacrylate polymer that is thermally degradable below 200° C., a photothermal conversion material that is present in an amount to provide a dry weight ratio to the cyanoacrylate polymer of from about 0.02:1 to about 0.8:1, and a hydrophilic binder to provide a dry weight ratio of a hydrophilic binder to the cyanoacrylate polymer of up to 1:1. Thermal imaging energy causes the exposed areas of the imaging layer to adhere to the support while unexposed areas can be readily washed off and/or simultaneously inked for press runs.
    Type: Application
    Filed: May 24, 2001
    Publication date: April 3, 2003
    Applicant: Eastman Kodak Company
    Inventors: David B. Bailey, Charles W. Lander
  • Patent number: 6022668
    Abstract: A lithographic imaging member has a support having thereon a melanophobic silicone copolymer layer and a contiguous surface melanophilic layer composed of an inorganic or organic polymeric matrix. Either or both layers includes a photothermal conversion material capable of converting irradiation, such as IR radiation, to heat in exposed regions. The imaging member can include in one or more layers a material capable of promoting adhesion across the interface of the contiguous layers. This imaging member can be digitally imaged, for example using a laser, and used for printing without wet processing.
    Type: Grant
    Filed: January 19, 1998
    Date of Patent: February 8, 2000
    Assignee: Kodak Polychrome Graphics LLC
    Inventors: Mitchell S. Burberry, David B. Bailey, Mark A. Harris, Charles D. DeBoer, Charles W. Lander