Patents by Inventor Prasanth Kumar
Prasanth Kumar 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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Publication number: 20110311823Abstract: A method of making a core-shell phosphor is provided. The method comprises mixing a lanthanum phosphate (LaPO4) core with a shell precursor mixture comprising at least one compound of La, at least one compound of Ce, and at least one compound of Tb to form a core+shell precursor mixture, heating the core+shell precursor mixture to a temperature in a range from about 900° C. to about 1200° C. with an inorganic flux material in presence of a reductant to provide a heated core+shell precursor mixture, cooling the heated core+shell precursor mixture to ambient temperature to provide a product core-shell phosphor dispersed in the inorganic flux material; and separating the product core-shell phosphor from the inorganic flux material.Type: ApplicationFiled: June 16, 2010Publication date: December 22, 2011Applicant: GENERAL ELECTRIC COMPANYInventors: Digamber Gurudas Porob, Alok Mani Srivastava, Holly Ann Comanzo, Gopi Chandran Ramachandran, Prasanth Kumar Nammalwar
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Publication number: 20110295634Abstract: Electronic communication has made it increasingly easier for large companies, such as those with thousands, even tens of thousands, of workers and/or consultants, to maintain steady streams of workflow across scattered offices and locations. In such a context, there is broadly contemplated herein business process modelling comprising the receipt of multiple business process models and resource constraints for each of the models. The models and constraints are then consolidated to more fully optimize business process modelling. Additional resource constraints governing goals of the business unit or organization are also received in embodiments of the invention, as well as resource registry information, (e.g., LDAP information) in addition to resource information such as resource availability and cost, etc. In embodiments of the invention, historical resource-to-task mapping is also assimilated as well as performance characteristics of resources.Type: ApplicationFiled: May 28, 2010Publication date: December 1, 2011Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Anuradha Bhamidipaty, Seema Prasanth Kumar
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Publication number: 20110255265Abstract: A phosphor material is presented that includes a blend of a first phosphor, a second phosphor and a third phosphor. The first phosphor includes a composition having a general formula of ((Sr1?zMz)1?(x+w)AwCex)3(Al1?ySiy)O4+y+3(x?w)F1?y?3(x?w), wherein 0<x?0.10, 0?y?0.5, 0?z?0.5, 0?w?x, A comprises Li, Na, K, or Rb; and M comprises Ca, Ba, Mg, Zn, or Sn. The second phosphor includes a complex fluoride doped with manganese (Mn4+), and the third phosphor include a phosphor composition having an emission peak in a range from about 520 nanometers to about 680 nanometers. A lighting apparatus including such a phosphor material is also presented. The light apparatus includes a light source in addition to the phosphor material.Type: ApplicationFiled: June 28, 2011Publication date: October 20, 2011Applicant: GENERAL ELECTRIC COMPANYInventors: Prasanth Kumar Nammalwar, Anant Achyut Setlur, Digamber Gurudas Porob, Satya Kishore Manepalli
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Publication number: 20110206580Abstract: A method of recovering a rare earth constituent from a phosphor is presented. The method can include a number of steps (a) to (d). In step (a), the phosphor is fired with an alkali material under conditions sufficient to decompose the phosphor into a mixture of oxides. A residue containing rare earth oxides is extracted from the mixture in step (b). In step (c), the residue is treated to obtain a solution, which comprises rare earth constituents in salt form. Rare earth constituents are separated from the solution in step (d).Type: ApplicationFiled: February 23, 2010Publication date: August 25, 2011Applicant: GENERAL ELECTRIC COMPANYInventors: Digamber Gurudas Porob, Alok Mani Srivastava, Prasanth Kumar Nammalwar, Gopi Chandran Ramachandran, Holly Ann Comanzo
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Patent number: 7857994Abstract: Phosphor compositions, blends thereof and light emitting devices including white light emitting LED based devices, and backlights, based on such phosphor compositions. The devices include a light source and a phosphor material as described. Also disclosed are phosphor blends including such a phosphor and devices made therefrom.Type: GrantFiled: May 30, 2007Date of Patent: December 28, 2010Assignee: GE Lighting Solutions, LLCInventors: Anant Achyut Setlur, Oltea Puica Siclovan, Prasanth Kumar Nammalwar, Ramesh Rao Sathyanarayan, Digamber G. Porob, Ramachandran Gopi Chandran, William Jordan Heward, Emil Vergilov Radkov, Linda Jane Valyou Briel
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Publication number: 20100199199Abstract: Systems and methods are provided that manipulating popup window controls. A popup window includes a presentation applet running in the popup window that collects data regarding the presentation. In order to save data collected by the applet before the popup window is closed, a control container embedded in the popup window disables the close window button of the popup window. The control container also maximizes the popup window to full screen for a more functional user interface.Type: ApplicationFiled: January 30, 2009Publication date: August 5, 2010Applicant: Oracle International CorporationInventors: Darshan Kumar, Ambili Sudhi, Govindraja Achar, Pankesh Jhaveri, Prasanth Kumar
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Publication number: 20100199020Abstract: In the present invention a non-volatile memory subsystem comprises a non-volatile memory device and a memory controller. The memory controller controls the operation of the non-volatile memory device with the memory controller having a processor for executing computer program instructions for partitioning the non-volatile memory device into a plurality of partitions, with each partition having adjustable parameters for wear level and data retention. The memory subsystem also comprises a clock for supplying timing signals to the memory controller.Type: ApplicationFiled: February 4, 2009Publication date: August 5, 2010Inventors: Fong-Long Lin, Prasanth Kumar, Dongsheng Xing
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Publication number: 20100191015Abstract: The present invention relates to process for the preparation of novel crystalline Desmethylvenlafaxine succinate polymorphic Forms-A, B. The present invention also relates to novel processes for the preparation of 0-Desmethylvenlafaxine succinate polymorphic Forms-(I), (II), (III) and amorphous.Type: ApplicationFiled: July 15, 2008Publication date: July 29, 2010Applicant: MATRIX LABORATORIES LIMITEDInventors: Ramakoteswara Rao Jetti, Purandhar Koilkonda, Jagan Mohana Chary Tummanapally, Mohana Vamsi, Krishna Vadlamudi, Prasanth Kumar Barik, Om Dutt Tyagi
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Publication number: 20100125696Abstract: A memory controller controls the operation of a non-volatile memory device. The memory device has a data storage section and an erased storage section. The data storage section has a first plurality of blocks and the erased storage section has a second plurality of blocks. Each of the first and second plurality of blocks has a plurality of non-volatile memory bits that are erased together. Further, each block has an associated counter for storing the number of times the block has been erased. The memory controller has program instructions which are to scan the counters associated with the blocks of the first plurality of blocks based upon the count contained in each of the counters associated therewith to select a third block, and to scan the counters associated with the blocks of the second plurality of blocks based upon the count contained in each of the counters associated therewith to select a fourth block.Type: ApplicationFiled: November 17, 2008Publication date: May 20, 2010Inventors: Prasanth Kumar, Dongsheng Xing, Fong-Long Lin
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Publication number: 20100023577Abstract: An event management system that plays a central role in handling varying loads of metadata events from each of a large number of touch-points or data servers that come into a Data Centric computing environment. As a matter of distinction when compared to conventional method-centric computing environments, there is broadly contemplated herein the concept not of physically installing a software agent on a designated system as stationary entity, but of launching it in a distributed computing environment and permitting it to “roam” around the numerous data servers to ensure consistency, accuracy and currency between the data entities managed by multiple data servers and the metadata servers in a data-centric computing environment.Type: ApplicationFiled: July 25, 2008Publication date: January 28, 2010Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Karthik Vijaykumar, Ock Kee BAEK, Pradeep Madaiah, Seema Prasanth Kumar
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Patent number: 7652415Abstract: An electron emissive material comprises an alkaline earth metal halide composition and operable to emit electrons on excitation. A lamp including an envelope, an electrode including an alkaline earth metal halide electron emissive material and a discharge material, is also disclosed.Type: GrantFiled: October 20, 2005Date of Patent: January 26, 2010Assignee: General Electric CompanyInventors: Gopi Chandran Ramachandran, Alok Mani Srivastava, Timothy John Sommerer, Suchismita Sanyal, Prasanth Kumar Nammalwar, Holly Ann Comanzo, William Winder Beers, Madras Venugopal Shankar
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Patent number: 7501753Abstract: Phosphor compositions having the formula EueMmAaGgQqNnXx, where M is at least one of Be, Mg, Ca, Sr, Ba, Cd, Sn, Pb or Zn; A is at least one of B, Al, Ga, In, Bi, Sc, Y, La or a rare earth element other than Eu; G is at least one of Si or Ge; Q is at least one of O, S, and Se; X is at least one of F, Cl, Br and I; 0<e<2, 0<m<2, 0?a<1, 0<g<1, 0<q<4, 0?n<2, 0?x<2, and 2e+2m+3a+4g=2q+3n+x; and light emitting devices including a light source and the above phosphor. Also disclosed are blends of EueMmAaGgQqNnXx and one or more additional phosphors and light emitting devices incorporating the same.Type: GrantFiled: August 31, 2005Date of Patent: March 10, 2009Assignee: Lumination LLCInventors: Dan Hancu, Mukunda Adyam, Emil Radkov, Prasanth Kumar, Anant Achyut Setlur, Alok Mani Srivastava, Holly Ann Comanzo, Gopi Chandran, Madras Venugopal Shankar
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Publication number: 20080296596Abstract: Phosphor compositions, blends thereof and light emitting devices including white light emitting LED based devices, and backlights, based on such phosphor compositions. The devices include a light source and a phosphor material as described. Also disclosed are phosphor blends including such a phosphor and devices made therefrom.Type: ApplicationFiled: May 30, 2007Publication date: December 4, 2008Inventors: Anant Achyut Setlur, Oltea Puica Siclovan, Prasanth Kumar Nammalwar, Ramesh Rao Sathyanarayan, Digamber G. Porob, Ramachandran Gopi Chandran, William Jordan Heward, Emil Vergilov Radkov, Linda Jane Valyou Briel
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Publication number: 20070045650Abstract: Phosphor compositions having the formula EueMmAaGgQqNnXx, where M is at least one of Be, Mg, Ca, Sr, Ba, Cd, Sn, Pb or Zn; A is at least one of B, Al, Ga, In, Bi, Sc, Y, La or a rare earth element other than Eu; G is at least one of Si or Ge; Q is at least one of O, S, and Se; X is at least one of F, Cl, Br and I; 0<e<2, 0<m<2, 0?a<1, 0<g<1, 0<q<4, 0?n<2, 0?x<2, and 2e+2m+3a+4g=2q+3n+x; and light emitting devices including a light source and the above phosphor. Also disclosed are blends of EueMmAaGgQqNnXx and one or more additional phosphors and light emitting devices incorporating the same.Type: ApplicationFiled: August 31, 2005Publication date: March 1, 2007Inventors: Dan Hancu, Mukunda Adyam, Emil Radkov, Prasanth Kumar, Anant Setlur, Alok Srivastava, Holly Comanzo, Gopi Chandran, Madras Shankar
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Publication number: 20060132043Abstract: A mercury-free discharge composition may be provided. The ionizable mercury-free discharge composition may include gallium and a halogen. The composition may be capable of emitting radiation if excited, and the composition may produce a total equilibrium operating pressure less than about 100,000 Pascals if excited. A mercury-free discharge lamp may be provided. The mercury-free discharge lamp may include an envelope; an ionizable discharge composition including gallium contained by the envelope; and a phosphor composition contained by the envelope and in communication with the ionizable discharge composition.Type: ApplicationFiled: December 29, 2005Publication date: June 22, 2006Inventors: Alok Srivastava, Timothy Sommerer, David Smith, Joseph Michael, William Beers, Holly Comanzo, Prasanth Kumar, Gopi Ramachandran, Madras Shankar, Ravikumar Hanumantha
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Patent number: 6739653Abstract: An attachable and detachable wheelchair tray with an adjustable work surface is disclosed. The adjustable work surface has two parts connected with a hinge. Part one is a horizontal stationary supporting base and part two is a movable top portion which can be tilted in an angular range of from 90 degrees to 180 degrees in relationship to the horizontal base. There is also an extendible auxiliary supporting rack attached to the movable top portion that allows the user to enlarge or reduce the work surface, thus permitting access to more items, references publications at a time. All adjustments of the work surface are easily controlled with levers, buttons or foot pedals, called “Ergo Aids” which are located on or in close proximity to the wheelchair tray, in a place that is most convenient for the seated user.Type: GrantFiled: July 19, 2002Date of Patent: May 25, 2004Assignee: University of Central FloridaInventors: Robert L. Hoekstra, Michael Mullens, Jose Gonzalez, Rashendra A. Shah, Prasanth Kumar Thupili, Jon Moen
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Patent number: 6450570Abstract: An attachable and detachable wheelchair tray with an adjustable work surface is disclosed. The adjustable work surface has two parts connected with a hinge. Part one is a horizontal stationary supporting base and part two is a movable top portion which can be tilted in an angular range of from 90 degrees to 180 degrees in relationship to the horizontal base. There is also an extendible auxiliary supporting rack attached to the movable top portion that allows the user to enlarge or reduce the work surface, thus permitting access to more items, references, publications at a time. All adjustments of the work surface are easily controlled with levers, buttons or foot pedals, called “Ergo Aids” which are located on or in close proximity to the wheelchair tray, in a place that is most convenient for the seated user. Fluid piston cylinders using compressed air, carbon dioxide or nitrogen provide the power required to move and adjust the tray with minimal force being applied to each control.Type: GrantFiled: November 8, 2000Date of Patent: September 17, 2002Assignee: University of Central FloridaInventors: Robert L. Hoekstra, Michael Mullens, Jose Gonzalez, Rashendra A. Shah, Prasanth Kumar Thupili, Jon Moen
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Patent number: 6170430Abstract: A gas feedthrough in a semiconductor processing apparatus comprises a static-dissipative composite material. This material is characterized by good resistance to electromigration and is preferably made of a homogeneous material. This apparatus for preventing the transfer of energy to a gas flown through a gas line and comprises a gas feedthrough comprising a static-dissipative material, the feedthrough having a first end for abuttingly contacting an electrically energized member and a second end for contacting a grounded member, the feedthrough defining a void therein along its length to house a gas line.Type: GrantFiled: April 13, 1999Date of Patent: January 9, 2001Assignee: Applied Materials, Inc.Inventors: Kuo-Shih Liu, Ernest Cheung, Prasanth Kumar, John Ferguson, Michael G. Friebe, Ashish Shrotriya, William Nixon Taylor, Jr.