Patents by Inventor Gautam Parthasarathy
Gautam Parthasarathy 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: 8525954Abstract: An article is provided in one embodiment of the invention. The article includes a display structure having a height, a width, and a thickness that define a volume. The display structure further includes components that emit light to generate a three-dimensional image within the volume. The display structure includes a stack. The stack includes at least one layer. The layer includes a substrate, the components that emit light and a controller. The components that emit light may each be secured to the substrate. The controller may be secured to the substrate. The controller may control the components that emit light to generate a three-dimensional image within the volume. The controller may be connected to two or more of the organic electronic devices. The components that emit light may include organic electronic devices. The components that emit light may include a light-emitting nano-wire device.Type: GrantFiled: June 27, 2007Date of Patent: September 3, 2013Assignee: General Electric CompanyInventors: Yun Li, Jie Liu, Gautam Parthasarathy, Anping Zhang, Gelu Comanescu
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Publication number: 20130082264Abstract: The present approach involves a radiation detector module with increased quantum efficiency and methods of fabricating the radiation detector module. The module includes a scintillator substrate and a photodetector fabricated on the scintillator substrate. The photodetector includes an anode, active organic elements, and a cathode. The module also includes a pixel element array disposed over the photodetector. During imaging, radiation attenuated by an object to be imaged may propagate through the pixel element array and through the layers of the photodetector to be absorbed by the scintillator which in response emits optical photons. The photodetector may absorb the photons and generate charge with improved quantum efficiency, as the photons may not be obscured by the cathode or other layers of the module. Further, the module may include reflective materials in the cathode and at the pixel element array to direct optical photons towards the active organic elements.Type: ApplicationFiled: September 30, 2011Publication date: April 4, 2013Applicant: General Electric CompanyInventors: Aaron Judy Couture, Steven Jude Duclos, Joseph John Shiang, Gautam Parthasarathy
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Patent number: 8283187Abstract: One aspect of the present invention provides a device that includes a substrate; a first semiconducting layer; a transparent conductive layer; a transparent window layer. The transparent window layer includes cadmium sulfide and oxygen. The device has a fill factor of greater than about 0.65. Another aspect of the present invention provides a method of making the device.Type: GrantFiled: October 3, 2011Date of Patent: October 9, 2012Assignee: General Electric CompanyInventors: Dalong Zhong, Gautam Parthasarathy, Richard Arthur Nardi, Jr.
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Publication number: 20120180858Abstract: One aspect of the present invention provides a method to make a film. The method includes providing a target comprising a sulfide within an oxygen free environment; applying a plurality of direct current pulses to the target to create a pulsed direct current plasma; sputtering the sulfide target with the pulsed DC plasma to eject a material comprising sulfur into the plasma; and depositing a film comprising the ejected material onto a support. Another aspect of the present invention provides a method of making a photovoltaic device.Type: ApplicationFiled: January 13, 2011Publication date: July 19, 2012Applicant: GENERAL ELECTRIC COMPANYInventors: Dalong Zhong, Gautam Parthasarathy, Richard Arthur Nardi, JR.
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Publication number: 20120080306Abstract: One aspect of the present invention provides a method to make a film. The method includes providing a target comprising a semiconductor material within an environment comprising oxygen; applying a plurality of direct current pulses to the target to create a pulsed direct current plasma; sputtering the target with the pulsed direct current plasma to eject a material comprising cadmium and sulfur into the plasma; and depositing a film comprising the material onto a substrate. The target includes a semiconductor material that comprises semiconductor material comprises cadmium and sulfur.Type: ApplicationFiled: September 30, 2010Publication date: April 5, 2012Applicant: GENERAL ELECTRIC COMPANYInventors: Dalong Zhong, Gautam Parthasarathy, Richard Arthur Nardi, JR.
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Publication number: 20120083068Abstract: One aspect of the present invention provides a device that includes a substrate; a first semiconducting layer; a transparent conductive layer; a transparent window layer. The transparent window layer includes cadmium sulfide and oxygen. The device has a fill factor of greater than about 0.65. Another aspect of the present invention provides a method of making the device.Type: ApplicationFiled: October 3, 2011Publication date: April 5, 2012Applicant: GENERAL ELECTRIC COMPANYInventors: Dalong Zhong, Gautam Parthasarathy, Richard Arthur Nardi, JR.
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Patent number: 8044477Abstract: One aspect of the present invention provides a device that includes a substrate; a first semiconducting layer; a transparent conductive layer; a transparent window layer. The transparent window layer includes cadmium sulfide and oxygen. The device has a fill factor of greater than about 0.65. Another aspect of the present invention provides a method of making the device.Type: GrantFiled: September 30, 2010Date of Patent: October 25, 2011Assignee: General Electric CompanyInventors: Dalong Zhong, Gautam Parthasarathy, Richard Arthur Nardi, Jr.
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Patent number: 8022623Abstract: The present techniques provide methods and systems for forming devices that may be formed from light emitting regions of electroluminescent organic materials. The small size of the light emitting regions allows the formation of blended colors, which may be formed into illuminated designs. Multiple devices may be joined together to form multilayer panels, where nearer layers may have different designs than farther layers, or farther layers may have solid illuminated colors useful as backgrounds for nearer layers. Further, the multilayer devices may be used as color tunable light sources.Type: GrantFiled: August 15, 2008Date of Patent: September 20, 2011Assignee: General Electric CompanyInventors: Svetlana Rogojevic, Gautam Parthasarathy
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Patent number: 7948163Abstract: The present invention is directed to a method for producing white light. The method includes applying a voltage to an organic light emitting device including a light emissive layer directly adjacent to a layer comprising at least one small molecule material capable of hole blocking and electron transport, the light emissive layer including at least one blue light emissive polymer, where the at least one small molecule material and the at least one blue light emissive polymer form a light emissive exciplex at or near an interface of the light emissive layer and the layer including the at least one small molecule material.Type: GrantFiled: June 19, 2007Date of Patent: May 24, 2011Assignee: General Electric CompanyInventors: Gautam Parthasarathy, Christian Maria Anton Heller
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Patent number: 7910386Abstract: The present invention provides a method for the preparation of organic light-emitting devices comprising a bilayer structure made by forming a first film layer comprising an electroactive material and an INP precursor material, and exposing the first film layer to a radiation source under an inert atmosphere to generate an interpenetrating network polymer composition comprising the electroactive material. At least one additional layer is disposed on the reacted first film layer to complete the bilayer structure. The bilayer structure is comprised within an organic light-emitting device comprising standard features such as electrodes and optionally one or more additional layers serving as a bipolar emission layer, a hole injection layer, an electron injection layer, an electron transport layer, a hole transport layer, exciton-hole transporting layer, exciton-electron transporting layer, a hole transporting emission layer, or an electron transporting emission layer.Type: GrantFiled: December 12, 2006Date of Patent: March 22, 2011Assignee: General Electric CompanyInventors: Joseph John Shiang, Kevin Henry Janora, Gautam Parthasarathy, James Anthony Cella, Kelly Scott Chichak
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Patent number: 7704610Abstract: The present invention provides electronic devices comprising novel polymer compositions which provide for enhanced device performance. The polymer compositions employed comprise a polymeric component and a novel organic iridium compound comprising at least one cyclometallated ligand and at least one ketopyrrole ligand. The organic iridium compounds used in the polymer compositions are referred to as Type (1) organic iridium compositions and are constituted such that no ligand of the novel organic iridium compound has a number average molecular weight of 2,000 grams per mole or greater (as measured by gel permeation chromatography). In one aspect, the polymeric component may be an electroactive polymer. In one aspect, the present invention provides optoelectronic devices, such as OLED devices and photovoltaic devices. In another aspect, the invention provides OLED devices exhibiting enhanced color properties and light output efficiencies.Type: GrantFiled: August 18, 2006Date of Patent: April 27, 2010Assignee: General Electric CompanyInventors: Kelly Scott Chichak, James Anthony Cella, Kyle Erik Litz, Joseph John Shiang, Qing Ye, Kevin Henry Janora, Gautam Parthasarathy
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Patent number: 7691494Abstract: The present invention provides electronic devices comprising novel organic iridium compositions which provide for enhanced device performance. The novel iridium compositions employed comprise at least one novel organic iridium compound which comprises at least one cyclometallated ligand and at least one ketopyrrole ligand. The organic iridium compositions employed are referred to as Type (1) organic iridium compositions and are constituted such that no ligand of the novel organic iridium compound has a number average molecular weight of 2,000 grams per mole or greater (as measured by gel permeation chromatography). Type (1) organic iridium compositions are referred to herein as comprising “organic iridium complexes”. In one aspect, the present invention provides optoelectronic devices, such as OLED devices and photovoltaic devices. In another aspect, the invention provides OLED devices exhibiting enhanced color properties and light output efficiencies.Type: GrantFiled: August 17, 2006Date of Patent: April 6, 2010Assignee: General Electric CompanyInventors: Kelly Scott Chichak, James Anthony Cella, Kyle Erik Litz, Joseph John Shiang, Qing Ye, Kevin Henry Janora, Gautam Parthasarathy
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Publication number: 20100039023Abstract: The present techniques provide methods and systems for forming devices that may be formed from light emitting regions of electroluminescent organic materials. The small size of the light emitting regions allows the formation of blended colors, which may be formed into illuminated designs. Multiple devices may be joined together to form multilayer panels, where nearer layers may have different designs than farther layers, or farther layers may have solid illuminated colors useful as backgrounds for nearer layers. Further, the multilayer devices may be used as color tunable light sources.Type: ApplicationFiled: August 15, 2008Publication date: February 18, 2010Applicant: General Electric CompanyInventors: Sveltlana Rogojevic, Gautam Parthasarathy
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Patent number: 7652126Abstract: Disclosed is a polymer composition derived from a bis-phenol comprising a conjugated aromatic radical, optionally comprising nitrogen. Suitable bis-phenols as well as methods for making said polymer are also disclosed. Also disclosed are electroactive layers comprising said polymer and electroactive devices comprising said layer.Type: GrantFiled: June 29, 2005Date of Patent: January 26, 2010Assignee: General Electric CompanyInventors: James Anthony Cella, Joseph John Shiang, Christian Maria Anton Heller, Kyle Erik Litz, Jie Liu, Larry Neil Lewis, Gautam Parthasarathy, Anil Raj Duggal, David Andrew Simon
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Publication number: 20090284158Abstract: The present techniques provide light emitting assemblies that include two or more light emitting devices joined into a single multilayered structure. Each device is electrically contiguous, and includes an electroluminescent polymer layer between two electrodes. In each device, the electroluminescent polymer layer and/or at least one of the two electrodes is patterned to form an illuminated design. Each device may be separately energized to illustrate a different pattern or design. In some embodiments, a layer having a contiguous light emitting layer may be attached to the back of the multilayer structure.Type: ApplicationFiled: May 16, 2008Publication date: November 19, 2009Applicant: GENERAL ELECTRIC COMPANYInventors: Gautam Parthasarathy, Svetlana Rogojevic, Thomas Shaginaw
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Publication number: 20090002266Abstract: An article is provided in one embodiment of the invention. The article includes a display structure having a height, a width, and a thickness that define a volume. The display structure further includes components that emit light to generate a three-dimensional image within the volume. The display structure includes a stack. The stack includes at least one layer. The layer includes a substrate, the components that emit light and a controller. The components that emit light may each be secured to the substrate. The controller may be secured to the substrate. The controller may control the components that emit light to generate a three-dimensional image within the volume. The controller may be connected to two or more of the organic electronic devices. The components that emit light may include organic electronic devices. The components that emit light may include a light-emitting nano-wire device.Type: ApplicationFiled: June 27, 2007Publication date: January 1, 2009Applicant: GENERAL ELECTRIC COMPANYInventors: Yun Li, Jie Liu, Gautam Parthasarathy, Anping Zhang, Gelu Comanescu
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Publication number: 20080231174Abstract: The present invention is directed to a method for producing white light. The method includes applying a voltage to an organic light emitting device including a light emissive layer directly adjacent to a layer comprising at least one small molecule material capable of hole blocking and electron transport, the light emissive layer including at least one blue light emissive polymer, where the at least one small molecule material and the at least one blue light emissive polymer form a light emissive exciplex at or near an interface of the light emissive layer and the layer including the at least one small molecule material.Type: ApplicationFiled: June 19, 2007Publication date: September 25, 2008Applicant: GENERAL ELECTRIC COMPANYInventors: Gautam Parthasarathy, Christian Maria Anton Heller
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Publication number: 20080026249Abstract: The present invention provides electronic devices comprising novel organic iridium compositions which provide for enhanced device performance. The novel iridium compositions employed comprise at least one novel organic iridium compound which comprises at least one cyclometallated ligand and at least one ketopyrrole ligand. The organic iridium compositions employed are referred to as Type (1) organic iridium compositions and are constituted such that no ligand of the novel organic iridium compound has a number average molecular weight of 2,000 grams per mole or greater (as measured by gel permeation chromatography). Type (1) organic iridium compositions are referred to herein as comprising “organic iridium complexes”. In one aspect, the present invention provides optoelectronic devices, such as OLED devices and photovoltaic devices. In another aspect, the invention provides OLED devices exhibiting enhanced color properties and light output efficiencies.Type: ApplicationFiled: August 17, 2006Publication date: January 31, 2008Inventors: Kelly Scott Chichak, James Anthony Cella, Kyle Erik Litz, Joseph John Shiang, Qing Ye, Kevin Henry Janora, Gautam Parthasarathy
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Publication number: 20080026496Abstract: The present invention provides a method for the preparation of organic light-emitting devices comprising a bilayer structure made by forming a first film layer comprising an electroactive material and an INP precursor material, and exposing the first film layer to a radiation source under an inert atmosphere to generate an interpenetrating network polymer composition comprising the electroactive material. At least one additional layer is disposed on the reacted first film layer to complete the bilayer structure. The bilayer structure is comprised within an organic light-emitting device comprising standard features such as electrodes and optionally one or more additional layers serving as a bipolar emission layer, a hole injection layer, an electron injection layer, an electron transport layer, a hole transport layer, exciton-hole transporting layer, exciton-electron transporting layer, a hole transporting emission layer, or an electron transporting emission layer.Type: ApplicationFiled: December 12, 2006Publication date: January 31, 2008Applicant: General Electric CompanyInventors: Joseph John Shiang, Kevin Henry Janora, Gautam Parthasarathy, James Anthony Cella, Kelly Scott Chichak
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Publication number: 20080026250Abstract: The present invention provides electronic devices comprising novel polymer compositions which provide for enhanced device performance. The polymer compositions employed comprise a polymeric component and a novel organic iridium compound comprising at least one cyclometallated ligand and at least one ketopyrrole ligand. The organic iridium compounds used in the polymer compositions are referred to as Type (1) organic iridium compositions and are constituted such that no ligand of the novel organic iridium compound has a number average molecular weight of 2,000 grams per mole or greater (as measured by gel permeation chromatography). In one aspect, the polymeric component may be an electroactive polymer. In one aspect, the present invention provides optoelectronic devices, such as OLED devices and photovoltaic devices. In another aspect, the invention provides OLED devices exhibiting enhanced color properties and light output efficiencies.Type: ApplicationFiled: August 18, 2006Publication date: January 31, 2008Inventors: Kelly Scott Chichak, James Anthony Cella, Kyle Erik Litz, Joseph John Shiang, Qing Ye, Kevin Henry Janora, Gautam Parthasarathy