Patents by Inventor Sridhar Reddy
Sridhar Reddy 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: 10139616Abstract: A display element comprising a configurable medium for providing a display effect. The display element is for example an electrowetting element having a first fluid and a second fluid. A first support plate comprises a first support plate surface in contact with at least one of the first fluid or the second fluid, and an electrode. In some examples, an optical structure comprises a first absorbent element and a second absorbent element, with a transmissive layer located therebetween. In other examples, an optical structure comprises a plurality of light conduits.Type: GrantFiled: March 31, 2016Date of Patent: November 27, 2018Assignee: Amazon Technologies, Inc.Inventors: Karel Johannes Gerhardus Hinnen, Tulasi Sridhar Reddy Guntaka
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Patent number: 10133058Abstract: A method for fabricating an electrowetting display may include forming pixel electrodes on a support plate; depositing a first layer on the pixel electrodes; etching portions of the first layer to form pixel walls that partition pixel regions; depositing a second layer on the pixel electrodes and the pixel walls; etching portions of the second layer to form spacers on tops of the pixel walls; and depositing a hydrophobic layer to at least partially cover the pixel electrodes.Type: GrantFiled: May 12, 2016Date of Patent: November 20, 2018Assignee: Amazon Technologies, Inc.Inventors: Pavel Novoselov, Gor Manukyan, Tulasi Sridhar Reddy Guntaka
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Patent number: 10120184Abstract: Subject matter disclosed herein relates to improving luminance and reducing color shifts in electrowetting displays. The electrowetting display comprises a plurality of electrowetting elements separated by partition walls and spacers. The spacers and/or partition walls are reflective. When incident light that enters a pixel or subpixel is reflected and encounters a spacer and/or partition wall, the light is reflected such that the reflected light exits the pixel or subpixel into which the incident light entered. This improves luminance and reduces color shifts of the electrowetting display.Type: GrantFiled: November 21, 2016Date of Patent: November 6, 2018Assignee: Amazon Technologies, Inc.Inventors: Erno Hermanus Antonius Langendijk, Christian Etienne Hendriks, Tulasi Sridhar Reddy Guntaka, Steven Ramos Carneiro, Pavel Novoselov
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Patent number: 10067336Abstract: A method for fabricating an electrowetting display may include depositing a first material layer on a support plate; placing a first mask on the first material layer, wherein the first mask covers first portions of the first material layer and does not cover second portions of the first photoresist layer; exposing second portions of the first material layer to electromagnetic radiation; depositing a second material layer on the first mask and the exposed second portions of the first material layer; placing a second mask on the second material layer; and etching to remove portions of the second material layer and the second portions of the first material layer. Portions of the first and second material layers that remain subsequent to the etching form spacers and a grid of pixel wall extensions.Type: GrantFiled: September 23, 2016Date of Patent: September 4, 2018Assignee: Amazon Technologies, Inc.Inventors: Pavel Novoselov, Gor Manukyan, Tulasi Sridhar Reddy Guntaka
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Patent number: 10048486Abstract: A display device includes a first support plate. A pixel region is formed on the first support plate and a reflective layer is positioned in the pixel region. The reflective layer includes a specular reflector and a diffuse reflector.Type: GrantFiled: August 18, 2015Date of Patent: August 14, 2018Assignee: AMAZON TECHNOLOGIES, INC.Inventors: Steven Ramos Carneiro, Tulasi Sridhar Reddy Guntaka, Henricus Petronella Maria Derckx, Pavel Novoselov
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Patent number: 10001639Abstract: An electrowetting display comprises a support plate on which individual electrowetting pixels separated from one another by pixel walls are formed. Pixel walls including different layers are disposed on the first support plate and separate adjacent pixel regions from each other. The first layer of a pixel wall comprises a first material having a first color and a second layer of the pixel wall comprises a second material having a second color that is different from the first color. Instead of using black matrix to reduce photo crosstalk, the pixel walls of the different layers absorb light colors that are not intended to reach the respective pixels. A fluid is disposed between the first support plate and a second support plate and at least partially surrounds the first wall and the second wall.Type: GrantFiled: March 11, 2016Date of Patent: June 19, 2018Assignee: Amazon Technologies, Inc.Inventors: Tulasi Sridhar Reddy Guntaka, Karel Johannes Gerhardus Hinnen, Gor Manukyan
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Patent number: 9977233Abstract: An electrowetting display comprises a first support plate, a second support plate substantially parallel to the first support plate, an electrolyte solution disposed between the first support plate and the second support plate, and a plurality of transparent diffuser elements protruding into the electrolyte solution from non-contiguous areas of the second support plate. Recesses separate the transparent diffuser elements.Type: GrantFiled: September 30, 2014Date of Patent: May 22, 2018Assignee: AMAZON TECHNOLOGIES, INC.Inventors: Toru Sakai, Tulasi Sridhar Reddy Guntaka
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Patent number: 9953589Abstract: An electrowetting display device may comprise pixels that include: a hydrophobic layer portion disposed on a first electrode, electrowetting fluids overlying the hydrophobic layer portion, and a thin film transistor (TFT) that is in electrical contact with the first electrode. The electrowetting display device also comprises a display control circuit in electrical contact with a drain or a source of the TFT of each of the pixels to provide a drive voltage to the drain or the source of the TFT of each of the pixels, and a reset control circuit in electrical contact with the drain or the source of the TFT of each of the pixels to provide a reset voltage pulse to the drain or the source of the TFT of each of the pixels. A magnitude of the reset voltage pulse may be based, at least in part, on the drive voltage.Type: GrantFiled: June 30, 2015Date of Patent: April 24, 2018Assignee: AMAZON TECHNOLOGIES, INCInventors: Pavel Novoselov, Steven Ramos Carneiro, Henricus Petronella Maria Derckx, Tulasi Sridhar Reddy Guntaka
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Patent number: 9841595Abstract: An electrowetting element comprises a first fluid and a second fluid immiscible with the first fluid. A support plate includes a support plate surface in contact with at least one of the first or second fluids. The support plate includes an electrode for applying a voltage to control a configuration of the first and second fluids and a reflective surface. A first layer positioned between the reflective surface and the support plate surface has a first layer optical thickness substantially equal to a quarter multiple of a reference wavelength.Type: GrantFiled: June 29, 2015Date of Patent: December 12, 2017Assignee: AMAZON TECHNOLOGIES, INC.Inventors: Karel Johannes Gerhardus Hinnen, Gerben Boon, Cristina Maria Petcu, Tulasi Sridhar Reddy Guntaka, Erno Langendijk
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Patent number: 9823462Abstract: Instead of using a clear or a semi-transparent notch within an electrowetting display, a colored notch that is the same color of the pixel region extends from one of the pixel walls toward an opposing pixel wall of the pixel region. The colored notches follow a non-flipped arrangement within each of the pixel regions. For example, each colored notch is adjacent to the same respective pixel wall for a pixel region. In other configurations, the colored notches follow a flipped arrangement within each of the pixel regions. For example, a colored notch of one pixel region and a colored notch of another pixel region are adjacent to the same pixel wall (on opposing sides). Instead of including a separate white sub pixel for each pixel, each pixel region is at least partially covered by a white color filter and a color filter that is the color of the pixel.Type: GrantFiled: March 9, 2016Date of Patent: November 21, 2017Assignee: Amazon Technologies, Inc.Inventors: Tulasi Sridhar Reddy Guntaka, Karel Johannes Gerhardus Hinnen, Gor Manukyan
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Patent number: 9719672Abstract: A light module includes a cover, a circuit board, a gasket, a bottom covering, and an optional optic assembly. The cover includes an inner and an outer wall extending outwardly from the cover, where the outer wall surrounds the inner wall and forms a groove therebetween. The circuit board is positioned within the inner wall's profile and includes a plurality of LEDs. The gasket is disposed within the groove. The bottom covering is positioned adjacent to the circuit board and is coupled to the cover. The gasket provides a seal between the cover and the bottom covering. The optic assembly is disposed within the inner wall's profile and between the cover and the circuit board. The optic assembly includes one or more apertures and one or more optics disposed around at least some of the apertures. Each optic is aligned with one or more LEDs.Type: GrantFiled: December 1, 2014Date of Patent: August 1, 2017Assignee: Cooper Technologies CompanyInventors: Khurram Zeshan Moghal, Philip Dean Winters, Sridhar Reddy Nimma
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Patent number: 9684161Abstract: Subject matter disclosed herein relates to improving luminance and reducing color shifts in electrowetting displays. The electrowetting display comprises a plurality of electrowetting elements separated by partition walls and spacers. The spacers and/or partition walls are reflective. When incident light that enters a pixel or subpixel is reflected and encounters a spacer and/or partition wall, the light is reflected such that the reflected light exits the pixel or subpixel into which the incident light entered. This improves luminance and reduces color shifts of the electrowetting display.Type: GrantFiled: September 30, 2015Date of Patent: June 20, 2017Assignee: Amazon Technologies, Inc.Inventors: Erno Hermanus Antonius Langendijk, Christian Etienne Hendriks, Tulasi Sridhar Reddy Guntaka, Steven Ramos Carneiro, Pavel Novoselov
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Patent number: 9649999Abstract: A head unit for a motor vehicle. The head unit comprises a processor, a memory, a radio frequency transceiver, a backup camera application, a navigation application, a remote operations event handling application stored in the memory that handles remote operation commands received via the radio frequency transceiver, and a boot-loader application. When executed by the processor the boot-loader application causes the processor to initiate execution of the remote operations event handling application and, after causing the processor to initiate execution of the remote operations event handling application, causes the processor to initiate execution of the backup camera application and execution of the navigation application.Type: GrantFiled: April 28, 2015Date of Patent: May 16, 2017Assignee: Sprint Communications Company L.P.Inventors: Sridhar Reddy Amireddy, David A. Haugh, Alex J. Oyler, Joshua D. Turner
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Patent number: 9604651Abstract: A computer system comprising a processor, a non-transitory memory, and an application stored in the non-transitory memory. When executed by the processor, the application determines that a telematics unit (TU) has connected to a messaging gateway, determines communication services to which the TU is entitled, generates metadata based on the communication services to which the TU is entitled, where the metadata comprises instructions to the TU to subscribe to topics supported by a publish-subscribe messaging gateway, and transmits the metadata to the TU.Type: GrantFiled: August 5, 2015Date of Patent: March 28, 2017Assignee: Sprint Communications Company L.P.Inventors: Sridhar Reddy Amireddy, David A. Haugh, Alex J. Oyler, Joshua D. Turner
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Patent number: 9540400Abstract: This invention relates to novel compounds which are inhibitors of acyl coenzymeA: diacylglycerol acyltransferase 1 (DGAT-1), to pharmaceutical compositions containing them, to processes for their preparation, and to their use in therapy for the prevention or treatment of diseases related to DGAT-1 dysfunction or where modulation of DGAT-1 activity may have therapeutic benefit including but not limited to obesity, obesity related disorders, hypertriglyceridemia, hyperlipoproteinemia, chylomicronemia, dyslipidemia, non-alcoholic steatohepatitis, diabetes, insulin resistance, metabolic syndrome, hepatitis C virus infection and acne or other skin disorders.Type: GrantFiled: January 15, 2016Date of Patent: January 10, 2017Assignee: GlaxoSmithKline Intellectual Property (No.2) LimitedInventors: Donghui Qin, Mui Cheung, Hemant Joshi, Raghuram Tangirala, Sridhar Reddy Bethi
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Publication number: 20170004779Abstract: An electrowetting display device may comprise pixels that include: a hydrophobic layer portion disposed on a first electrode, electrowetting fluids overlying the hydrophobic layer portion, and a thin film transistor (TFT) that is in electrical contact with the first electrode. The electrowetting display device also comprises a display control circuit in electrical contact with a drain or a source of the TFT of each of the pixels to provide a drive voltage to the drain or the source of the TFT of each of the pixels, and a reset control circuit in electrical contact with the drain or the source of the TFT of each of the pixels to provide a reset voltage pulse to the drain or the source of the TFT of each of the pixels. A magnitude of the reset voltage pulse may be based, at least in part, on the drive voltage.Type: ApplicationFiled: June 30, 2015Publication date: January 5, 2017Inventors: Pavel Novoselov, Steven Ramos Carneiro, Henricus Petronella Maria Derckx, Tulasi Sridhar Reddy Guntaka
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Patent number: 9529189Abstract: Subject matter disclosed herein relates to improving luminance and reducing color shifts in electrowetting displays. The electrowetting display comprises a plurality of electrowetting elements separated by partition walls and spacers. The spacers and/or partition walls are reflective. When incident light that enters a pixel or subpixel is reflected and encounters a spacer and/or partition wall, the light is reflected such that the reflected light exits the pixel or subpixel into which the incident light entered. This improves luminance and reduces color shifts of the electrowetting display.Type: GrantFiled: September 30, 2015Date of Patent: December 27, 2016Assignee: Amazon Technologies, Inc.Inventors: Erno Hermanus Antonius Langendijk, Christian Etienne Hendriks, Tulasi Sridhar Reddy Guntaka, Steven Ramos Carneiro, Pavel Novoselov
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Patent number: 9465207Abstract: A method for fabricating an electrowetting display may include depositing a first material layer on a support plate; placing a first mask on the first material layer, wherein the first mask covers first portions of the first material layer and does not cover second portions of the first photoresist layer; exposing second portions of the first material layer to electromagnetic radiation; depositing a second material layer on the first mask and the exposed second portions of the first material layer; placing a second mask on the second material layer; and etching to remove portions of the second material layer and the second portions of the first material layer. Portions of the first and second material layers that remain subsequent to the etching form spacers and a grid of pixel wall extensions.Type: GrantFiled: December 3, 2014Date of Patent: October 11, 2016Assignee: Amazon Technologies, Inc.Inventors: Pavel Novoselov, Gor Manukyan, Tulasi Sridhar Reddy Guntaka
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Patent number: 9444892Abstract: A method of communicating with a telematics unit in a vehicle. The method comprises receiving a content message directed to a telematics unit by an event manager application executing on a server computer, wherein the telematics unit is an electronic device comprising a wireless communication transceiver and integrated into a motor vehicle, determining by the event manager application that the content message is a high priority message type, and determining by the event manager application that the telematics unit is off-line and out-of-wireless-coverage. The method further comprises, responsive to determining that the content message is a high priority message type and to determining that the telematics unit is off-line and out-of-wireless-coverage, sending by the event manager application a wake-up message to the telematics unit, wherein the telematics unit, responsive to receiving the wake-up message, establishes a roaming data wireless communication link and receives the content message via the data link.Type: GrantFiled: May 5, 2015Date of Patent: September 13, 2016Assignee: Sprint Communications Company L.P.Inventors: Sridhar Reddy Amireddy, David A. Haugh, Alex J. Oyler, Joshua D. Turner
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Publication number: 20160200736Abstract: This invention relates to novel compounds which are inhibitors of acyl coenzymeA: diacylglycerol acyltransferase 1 (DGAT-1), to pharmaceutical compositions containing them, to processes for their preparation, and to their use in therapy for the prevention or treatment of diseases related to DGAT-1 dysfunction or where modulation of DGAT-1 activity may have therapeutic benefit including but not limited to obesity, obesity related disorders, hypertriglyceridemia, hyperlipoproteinemia, chylomicronemia, dyslipidemia, non-alcoholic steatohepatitis, diabetes, insulin resistance, metabolic syndrome, hepatitis C virus infection and acne or other skin disorders.Type: ApplicationFiled: January 15, 2016Publication date: July 14, 2016Inventors: Donghui QIN, Mui CHEUNG, Hemant JOSHI, Raghuram TANGIRALA, Sridhar Reddy BETHI