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).
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Patent number: 7931515Abstract: 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: GrantFiled: May 21, 2010Date of Patent: April 26, 2011Assignee: Global OLED Technology LLCInventors: Krishnan Chari, Charles W. Lander, Liang-Sheng Liao, Paul D. Yacobucci
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Publication number: 20100224313Abstract: 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: ApplicationFiled: May 21, 2010Publication date: September 9, 2010Inventors: Krishnan Chari, Charles W. Lander, Liang-Sheng Liao, Paul D. Yacobucci
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Patent number: 7777416Abstract: 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: GrantFiled: June 14, 2007Date of Patent: August 17, 2010Assignee: Global Oled Technology LLCInventors: Krishnan Chari, Charles W. Lander, Liang-Sheng Liao, Paul D. Yacobucci
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Patent number: 7754295Abstract: 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: GrantFiled: June 29, 2006Date of Patent: July 13, 2010Assignee: Industrial Technology Research InstituteInventors: Krishnan Chari, Charles W. Lander
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Patent number: 7722790Abstract: 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: GrantFiled: June 14, 2007Date of Patent: May 25, 2010Assignee: 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
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Publication number: 20090316417Abstract: 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: ApplicationFiled: June 20, 2008Publication date: December 24, 2009Applicant: Rohm and Haas Denmark Finance A/SInventors: Krishnan Chari, Charles W. Lander, Charles C. Anderson
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Patent number: 7535646Abstract: 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: GrantFiled: April 27, 2007Date of Patent: May 19, 2009Assignee: Eastman Kodak CompanyInventors: Krishnan Chari, Charles W. Lander, Jin-Shan Wang, Donald R. Preuss, Ronald S. Cok, Yuan-Sheng Tyan, Joel D. Shore
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Publication number: 20080310186Abstract: 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: ApplicationFiled: June 14, 2007Publication date: December 18, 2008Inventors: Krishnan Chari, Charles W. Lander, Liang-Sheng Liao, Paul D. Yacobucci
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Patent number: 7455886Abstract: 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: GrantFiled: August 22, 2005Date of Patent: November 25, 2008Assignee: Eastman Kodak CompanyInventors: YuanQiao Rao, Samuel Chen, Charles W. Lander, Tomohiro Ishikawa, Theodore R. Vandam
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Publication number: 20080278663Abstract: 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: ApplicationFiled: June 14, 2007Publication date: November 13, 2008Inventors: Chari Krishnan, Charles W. Lander, Ronald J. Sudol, Jin-Shan Wang, Charles M. Rankin, JR., Paul D. Yacobucci
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Publication number: 20080117519Abstract: 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: ApplicationFiled: April 27, 2007Publication date: May 22, 2008Inventors: Krishnan Chari, Charles W. Lander, Jin-Shan Wang, Donald R. Preuss, Ronald S. Cok, Yuan-Sheng Tyan, Joel D. Shore
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Publication number: 20080037261Abstract: 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: ApplicationFiled: August 10, 2006Publication date: February 14, 2008Inventors: Krishnan Chari, Charles W. Lander, Jin-Shan Wang, Junwon Lee
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Publication number: 20080003379Abstract: 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: ApplicationFiled: June 29, 2006Publication date: January 3, 2008Inventors: Krishnan Chari, Charles W. Lander
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Patent number: 6551757Abstract: 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: GrantFiled: May 24, 2001Date of Patent: April 22, 2003Assignee: Eastman Kodak CompanyInventors: David B. Bailey, Charles W. Lander
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Publication number: 20030064317Abstract: 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: ApplicationFiled: May 24, 2001Publication date: April 3, 2003Applicant: Eastman Kodak CompanyInventors: David B. Bailey, Charles W. Lander
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Patent number: 6022668Abstract: 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: GrantFiled: January 19, 1998Date of Patent: February 8, 2000Assignee: Kodak Polychrome Graphics LLCInventors: Mitchell S. Burberry, David B. Bailey, Mark A. Harris, Charles D. DeBoer, Charles W. Lander