Patents by Inventor Ashish Tandon
Ashish Tandon 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: 11961875Abstract: A device may include a metal contact between a first isolation region and a second isolation region on a first surface of an epitaxial layer. The device may include a first sidewall and a second sidewall on a second surface of the epitaxial layer distal to the first isolation region and the second isolation region. The device may include a wavelength converting layer on the epitaxial layer between the first sidewall and the second sidewall.Type: GrantFiled: January 19, 2023Date of Patent: April 16, 2024Assignee: Lumileds LLCInventors: Ashish Tandon, Rajat Sharma, Joseph Flemish, Andrei Papou, Wen Yu, Erik William Young, Yu-Chen Shen, Luke Gordon
-
Patent number: 11941034Abstract: Systems and methods for conversational user experiences and conversational database analysis disclosed herein improve the efficiency and accessibility of low-latency database analytics.Type: GrantFiled: January 31, 2023Date of Patent: March 26, 2024Assignee: ThoughtSpot, Inc.Inventors: Manikanta Venkata Rahul Balakavi, Rakesh Kothari, Amit Prakash, Ravi Tandon, Ashish Shubham
-
Publication number: 20240070204Abstract: A current set of context features for a database query that is associated with a string is identified. The database query includes a sequence of tokens of a database syntax, and the current set of context features includes words from the string and tokens from the database query. An inference record is selected from an inference store based on a comparison of the current set of context features to context features of inference records in the inference store. The database query is modified using a resolution of the inference record to obtain an inferred database query. The resolution includes one or more tokens of the database syntax. A search of a database is invoked using a query based on the inferred database query to obtain search results.Type: ApplicationFiled: September 1, 2023Publication date: February 29, 2024Inventors: Amit Prakash, Ravi Tandon, Manikanta Venkata Rahul Balakavi, Pavan Ram Piratla, Ashish Shubham, Alonzo Canada, Rakesh Kothari, Maneesh Apte, Amitabh Singhal, Aditya Viswanathan, Ajeet Singh
-
Patent number: 11749790Abstract: A device may include a substrate having a first embedded transistor in a first region and a second embedded transistor in a second region. The first region and the second region may be separated by trench extending through at least a portion of an epitaxial layer formed on the substrate. The first embedded transistor may be connected to a first light emitting diode (LED) and the second embedded transistor may be connected to a second LED. A first optical isolation layer may be between the epitaxial layer and the first region of the substrate. A second optical isolation layer may be between the epitaxial layer and the second region of the substrate.Type: GrantFiled: December 19, 2018Date of Patent: September 5, 2023Assignee: Lumileds LLCInventors: Ashish Tandon, Luke Gordon, Yu-Chen Shen
-
Publication number: 20230154970Abstract: A device may include a metal contact between a first isolation region and a second isolation region on a first surface of an epitaxial layer. The device may include a first sidewall and a second sidewall on a second surface of the epitaxial layer distal to the first isolation region and the second isolation region. The device may include a wavelength converting layer on the epitaxial layer between the first sidewall and the second sidewall.Type: ApplicationFiled: January 19, 2023Publication date: May 18, 2023Applicant: Lumileds LLCInventors: Ashish Tandon, Rajat Sharma, Joseph Flemish, Andrei Papou, Wen Yu, Erik William Young, Yu-Chen Shen, Luke Gordon
-
Publication number: 20210255211Abstract: Some embodiments include a method and apparatus which obtains sensor data associated with a vehicle. The sensor data includes three-dimensional acceleration data and three-dimensional rotation data, with respect to a sensor coordinate system. A gravity vector is obtained, and it is determined when the vehicle starts moving. Acceleration direction is used as a forward direction of the vehicle. It is determined from the rotation data when the vehicle changes direction, the rotation data indicating two different directions. The gravity vector is used to distinguish which is an upward direction by selecting directions the direction which has larger angle with respect to the gravity vector as the upward direction. The forward direction and upward direction are used to determine a rightward direction. The forward direction, upward direction and rightward direction represent the vehicle coordinate system. The orientation of the apparatus with respect to the orientation of the vehicle is determined.Type: ApplicationFiled: July 3, 2018Publication date: August 19, 2021Inventors: Péter SZILÁGYI, Csaba VULKÁN, Joachim WUILMET, Ashish TANDON, Zoltán LÁZÁR, Ali SHARAF
-
Patent number: 10957820Abstract: A light-emitting device is disclosed which includes a segmented active layer disposed between a segmented conductivity layer and a continuous conductivity layer, the active layer, the segmented conductivity layer, and the continuous conductivity layer being arranged to define a plurality of pixels, each pixel including a different segment of the segmented conductivity layer and the segmented active layer. A continuous wavelength converting layer disposed on the continuous conductivity layer is provided. A plurality of first contacts, each first contact being electrically connected to a different segment of the segmented conductivity layer is provided. One or more second contacts that are electrically connected to the continuous conductivity layer are also provided, the number of second contacts being less than the number of first contacts.Type: GrantFiled: December 19, 2018Date of Patent: March 23, 2021Assignee: Lumileds LLCInventors: Luke Gordon, Oleg Shchekin, Ashish Tandon, Rajat Sharma, Joseph Flemish, Andrei Papou, Wen Yu, Erik Young
-
Publication number: 20190198716Abstract: A light-emitting device is disclosed which includes a segmented active layer disposed between a segmented conductivity layer and a continuous conductivity layer, the active layer, the segmented conductivity layer, and the continuous conductivity layer being arranged to define a plurality of pixels, each pixel including a different segment of the segmented conductivity layer and the segmented active layer. A continuous wavelength converting layer disposed on the continuous conductivity layer is provided. A plurality of first contacts, each first contact being electrically connected to a different segment of the segmented conductivity layer is provided. One or more second contacts that are electrically connected to the continuous conductivity layer are also provided, the number of second contacts being less than the number of first contacts.Type: ApplicationFiled: December 19, 2018Publication date: June 27, 2019Applicant: Lumileds LLCInventors: Luke GORDON, Oleg SHCHEKIN, Ashish TANDON, Rajat SHARMA, Joseph FLEMISH, Andrei PAPOU, Wen YU, Erik YOUNG
-
Publication number: 20190198564Abstract: A device may include a metal contact between a first isolation region and a second isolation region on a first surface of an epitaxial layer. The device may include a first sidewall and a second sidewall on a second surface of the epitaxial layer distal to the first isolation region and the second isolation region. The device may include a wavelength converting layer on the epitaxial layer between the first sidewall and the second sidewall.Type: ApplicationFiled: December 19, 2018Publication date: June 27, 2019Applicant: Lumileds LLCInventors: Ashish TANDON, Rajat SHARMA, Joseph Robert FLEMISH, Andrei PAPOU, Wen YU, Erik YOUNG, Yu-Chen SHEN, Luke GORDON
-
Publication number: 20190189879Abstract: A device may include a substrate having a first embedded transistor in a first region and a second embedded transistor in a second region. The first region and the second region may be separated by trench extending through at least a portion of an epitaxial layer formed on the substrate. The first embedded transistor may be connected to a first light emitting diode (LED) and the second embedded transistor may be connected to a second LED. A first optical isolation layer may be between the epitaxial layer and the first region of the substrate. A second optical isolation layer may be between the epitaxial layer and the second region of the substrate.Type: ApplicationFiled: December 19, 2018Publication date: June 20, 2019Applicant: Lumileds LLCInventors: Ashish TANDON, Luke GORDON, Yu-Chen SHEN
-
Publication number: 20190189682Abstract: A light emitting diode (LED) array may include an epitaxial layer comprising a first pixel and a second pixel separated by an isolation region. A reflective layer may be formed on the epitaxial layer. A p-type contact layer may be formed on the reflective layer. The isolation region may have a width that is at least a width of a trench formed in a p-type contact layer.Type: ApplicationFiled: December 19, 2018Publication date: June 20, 2019Applicant: Lumileds LLCInventors: Erik YOUNG, Joseph Robert FLEMISH, Ashish TANDON, Rajat SHARMA, Andrei PAPOU, Wen YU, Yu-Chen SHEN, Luke GORDON
-
Publication number: 20130174900Abstract: A thin-film photovoltaic devices includes transparent conductive oxide which has embedded within it nanowires at less than 2% nominal shadowing area. The nanowires enhance the electrical conductivity of the conductive oxide.Type: ApplicationFiled: July 6, 2012Publication date: July 11, 2013Applicant: Stion CorporationInventors: Chester A. Farris, III, Robert D. Wieting, Ashish Tandon
-
Patent number: 8461061Abstract: A method of supporting a plurality of planar substrates in a tube shaped furnace for conducting a thermal treatment process is disclosed. The method uses a boat fixture having a base frame including two length portions and a first width portion, a second width portion, and one or more middle members connected between the two length portions. Additionally, the method includes mounting a removable first grooved rod respectively on the first width portion, the second width portion, and each of the one or more middle members, each first grooved rod having a first plurality of grooves characterized by a first spatial configuration. The method further includes inserting one or two substrates of a plurality of planar substrates into each groove in the boat fixture separated by a distance.Type: GrantFiled: June 28, 2011Date of Patent: June 11, 2013Assignee: Stion CorporationInventors: Paul Alexander, Jurg Schmitzberger, Ashish Tandon, Robert D. Wieting
-
Patent number: 8398772Abstract: An apparatus for reactive thermal treatment of thin film photovoltaic devices includes a furnace tube including an inner wall extended from a first end to a second end. The apparatus further includes a gas supply device coupled to the second end and configured to fill one or more working gases into the furnace tube. Additionally, the apparatus includes a cover configured to seal the furnace tube at the first end and serve as a heat sink for the one or more working gases. Furthermore, the apparatus includes a fixture mechanically attached to the cover. The fixture is configured to load an array of substrates into the furnace tube as the cover seals the furnace tube. Moreover, the apparatus includes a crescent shaped baffle member disposed seamlessly at a lower portion of the inner wall for blocking a convection current of the one or more working gases cooled by the cover.Type: GrantFiled: August 17, 2010Date of Patent: March 19, 2013Assignee: Stion CorporationInventors: Ashish Tandon, Robert D. Wieting, Jurg Schmizberger, Paul Alexander
-
Publication number: 20120264072Abstract: An apparatus for performing reactive thermal treatment of thin film photovoltaic devices includes a furnace having a tubular body surrounded by heaters and cooling devices. The apparatus includes cooled doors at ends of the furnace separated from a central portion of the furnace by baffles. The cooled doors facilitate increased convection within the furnace and improve temperature uniformity.Type: ApplicationFiled: January 18, 2012Publication date: October 18, 2012Applicant: Stion CorporationInventor: Ashish Tandon
-
Publication number: 20120021552Abstract: A method of supporting a plurality of planar substrates in a tube shaped furnace for conducting a thermal treatment process is disclosed. The method uses a boat fixture having a base frame including two length portions and a first width portion, a second width portion, and one or more middle members connected between the two length portions. Additionally, the method includes mounting a removable first grooved rod respectively on the first width portion, the second width portion, and each of the one or more middle members, each first grooved rod having a first plurality of grooves characterized by a first spatial configuration. The method further includes inserting one or two substrates of a plurality of planar substrates into each groove in the boat fixture separated by a distance.Type: ApplicationFiled: June 28, 2011Publication date: January 26, 2012Applicant: Stion CorporationInventors: Paul Alexander, Jurg Schmitzberger, Ashish Tandon, Robert D. Wieting
-
Publication number: 20110259395Abstract: A high efficiency thin-film photovoltaic module is formed on a substrate. The photovoltaic module includes a plurality of stripe shaped photovoltaic cells electrically coupled to each other and physically disposed in parallel to the length one next to another across the width. Each cell includes a barrier material overlying the surface and a first electrode overlying the barrier material. Each cell further includes an absorber formed overlying the first electrode. The absorber includes a copper gallium indium diselenide compound material characterized by an energy band-gap of about 1 eV to 1.1 eV. Each cell additionally includes a buffer material overlying the absorber and a bi-layer zinc oxide material comprising a high resistivity transparent layer overlying the buffer material and a low resistivity transparent layer overlying the high resistivity transparent layer.Type: ApplicationFiled: April 13, 2011Publication date: October 27, 2011Applicant: Stion CorporationInventors: Robert D. Wieting, Rajiv Pethe, Kannan Ramanathan, May Shao, Ashish Tandon
-
Publication number: 20110220198Abstract: A method for forming a bifacial thin film photovoltaic cell includes providing a glass substrate having a surface region covered by an intermediate layer and forming a thin film photovoltaic cell on the surface region. Additionally, the thin film photovoltaic cell includes an anode overlying the intermediate layer, an absorber over the anode, and a window layer and cathode over the absorber mediated by a buffer layer. The anode comprises an aluminum doped zinc oxide (AZO) layer forming a first interface with the intermediate layer and a second interface with the absorber. The AZO layer is configured to induce Fermi level pinning at the first interface and a strain field from the first interface to the second interface.Type: ApplicationFiled: March 16, 2011Publication date: September 15, 2011Applicant: Stion CorporationInventors: Ashish Tandon, Fred Mikulec
-
Patent number: 7577172Abstract: In accordance with the invention, increased maximum modulation speeds and improved hole distribution are obtained for light emitting devices. Barrier layers of a quantum well structure for a light emitting device are formed with varying barrier energy heights. Quantum well layers of the quantum well structure are formed between the barrier layers.Type: GrantFiled: June 1, 2005Date of Patent: August 18, 2009Assignee: Agilent Technologies, Inc.Inventors: Ashish Tandon, Kostadin Djordjev, Chao-Kun Lin, Michael R. T. Tan
-
Patent number: 7443561Abstract: Double well structures in electro-absorption modulators are created in quantum well active regions by embedding deep ultra thin quantum wells. The perturbation introduced by the embedded, deep ultra thin quantum well centered within a conventional quantum well lowers the confined energy state for the wavefunction in the surrounding larger well and typically results in the hole and electron distributions being more confined to the center of the conventional quantum well. The extinction ratio provided by the electro-absorption modulator is typically increased.Type: GrantFiled: June 8, 2005Date of Patent: October 28, 2008Assignee: Avago Technologies Fiber IP (Singapore) Pte. Ltd.Inventors: David P. Bour, Ashish Tandon, Michael R. T. Tan