Patents by Inventor V. Subramanian
V. Subramanian 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: 9130840Abstract: A host server may optimize configurations of a set of readers under its control. The server assigns a multicast address to each reader in the set. Once connected, the server sends a multicast message to each reader assigned to the multicast address or to each reader within a given address range. Information in the multicast message is used for configuring or managing polling operations of each reader assigned to the multicast address or each reader within the given address range.Type: GrantFiled: November 9, 2011Date of Patent: September 8, 2015Assignee: Symbol Technologies, LLCInventors: Panchapakesan V. Subramanian, Michael O'Haire
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Patent number: 8545603Abstract: The present invention provides for a method utilizing adsorber bed(s) and reversible blower(s) operating in a vacuum pressure swing adsorption separation process to separate gases. The process is designed to provide a safer and more cost-effective adsorption system that captures and utilizes energy typically wasted during equipment transitions thereby achieving overall higher power efficiency.Type: GrantFiled: June 24, 2010Date of Patent: October 1, 2013Assignee: Adsorptech Inc.Inventors: Apurva Maheshwary, John Robert Ambriano, James J Flaherty, Krishnamurti V Subramanian
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Patent number: 8518176Abstract: Method for suppressing antagonistic hydration reactions in Portland fly ash cement involves the use of unponded fly ash that is pre-hydrated, preferably as an aqueous slurry wherein fly ash, preferably having an alkaline earth metal oxide of at least 10% by weight, is soaked, whereby the hydration reaction of the resultant mixed fly ash and cement is accelerated when these components are mixed together with water to hydrate the cement. Blended Portland cement/fly ash compositions of the invention will also have higher early strength as well as shorter set time compared to untreated blends.Type: GrantFiled: October 30, 2009Date of Patent: August 27, 2013Assignee: W. R. Grace & Co.-Conn.Inventors: Denise A. Silva, Josephine Cheung, Paul Sandberg, Lawrence Roberts, Durga V. Subramanian, John L. Gallagher, Lawrence L. Kuo
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Patent number: 8490526Abstract: Processes for high speed machining of workpiece materials using high performance tools with prolonged tool life and improved surface finish are provided by vibrating the tool and/or the workpiece at a frequency greater than the frequency of shear localization in the primary shear zone or chip segmentation occurring in the absence of tool vibration, with an amplitude sufficient to break up the tool-chip atomic contact, thereby decreasing the tool-chip contact length through decreasing the tool-chip contact time, thereby suppressing accelerated chemical tool wear caused by dissolution of the tool into the workpiece by nanocrystalline grain boundary diffusion and grain boundary sliding mechanisms by preventing shear localization associated with nanocrystalline grain formation in the primary shear zone of the chip, and suppressing oxidation wear of the tool by preventing segmentation of the chip.Type: GrantFiled: May 22, 2012Date of Patent: July 23, 2013Inventor: Sundaresa V. Subramanian
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Publication number: 20130169414Abstract: A method and apparatus for obtaining data of a Radio Frequency Identification (RFID) tag in a virtual read zone of a non-RFID enabled device. The method comprises determining a location of the non-RFID enabled device, determining a virtual read zone of the non-RFID enabled device using at least the location of the non-RFID enabled device, identifying at least one fixed reader device having an RFID read zone that at least partially includes the virtual read zone, reading data of the RFID tag using the at least one fixed reader device, and transmitting the data of the RFID tag from the at least one fixed reader device to the non-RFID enabled device.Type: ApplicationFiled: December 29, 2011Publication date: July 4, 2013Applicant: SYMBOL TECHNOLOGIES, INC.Inventors: David E. Bellows, Michael O'Haire, Panchapakesan V. Subramanian
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Publication number: 20130154809Abstract: A method and apparatus for locating an item within an RFID monitored area. When attempting to locate an item using an RFID reader, an interrogation signal is transmitted for at least one RFID tag. A responsive signal from the interrogated RFID tag is processed using data from one or more orientation sensors configured within the RFID reader to determine a direction from the RFID reader toward the RFID tag. The direction toward the RFID tag is displayed and the process repeats while movement of the RFID reader is detected to assist the user in locating the RFID tag, and thus, the item.Type: ApplicationFiled: December 19, 2011Publication date: June 20, 2013Applicant: SYMBOL TECHNOLOGIES, INC.Inventors: PANCHAPAKESAN V. SUBRAMANIAN, ROBERT C. ARNESON
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Publication number: 20130113608Abstract: A host server may optimize configurations of a set of readers under its control. The server assigns a multicast address to each reader in the set. Once connected, the server sends a multicast message to each reader assigned to the multicast address or to each reader within a given address range. Information in the multicast message is used for configuring or managing polling operations of each reader assigned to the multicast address or each reader within the given address range.Type: ApplicationFiled: November 9, 2011Publication date: May 9, 2013Applicant: SYMBOL TECHNOLOGIES, INC.Inventors: PANCHAPAKESAN V. SUBRAMANIAN, MICHAEL O'HAIRE
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Publication number: 20130049925Abstract: Embodiments include a radio frequency identification (RFID) tag reader system and methods of its operation. The system includes a drive system and an RFID tag reader. The RFID tag reader includes a directional antenna configured to receive RF signals within a radiowave beam (e.g. RFID tag response signals from RFID tags when the RFID tags are within an area encompassed by the radiowave beam). An embodiment of the system also includes a camera configured to capture images within a field of view. The drive system is coupled to the directional antenna and the camera, and is configured to change physical orientations of the directional antenna and the camera with respect to a fixed coordinate system, resulting in adjustments to angular orientations of the radiowave beam and the field of view with respect to the fixed coordinate system.Type: ApplicationFiled: August 22, 2011Publication date: February 28, 2013Applicant: SYMBOL TECHNOLOGIES, INC.Inventor: Panchapakesan V. SUBRAMANIAN
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Publication number: 20120297942Abstract: Processes for high speed machining of workpiece materials using high performance tools with prolonged tool life and improved surface finish are provided by vibrating the tool and/or the workpiece at a frequency greater than the frequency of shear localization in the primary shear zone or chip segmentation occurring in the absence of tool vibration, with an amplitude sufficient to break up the tool-chip atomic contact, thereby decreasing the tool-chip contact length through decreasing the tool-chip contact time, thereby suppressing accelerated chemical tool wear caused by dissolution of the tool into the workpiece by nanocrystalline grain boundary diffusion and grain boundary sliding mechanisms by preventing shear localization associated with nanocrystalline grain formation in the primary shear zone of the chip, and suppressing oxidation wear of the tool by preventing segmentation of the chip.Type: ApplicationFiled: May 22, 2012Publication date: November 29, 2012Inventor: Sundaresa V. Subramanian
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Publication number: 20120298011Abstract: Method for suppressing antagonistic hydration reactions in Portland fly ash cement involves the use of unponded fly ash that is pre-hydrated, preferably as an aqueous slurry wherein fly ash, preferably having an alkaline earth metal oxide of at least 10% by weight, is soaked, whereby the hydration reaction of the resultant mixed fly ash and cement is accelerated when these components are mixed together with water to hydrate the cement. Blended Portland cement/fly ash compositions of the invention will also have higher early strength as well as shorter set time compared to untreated blends.Type: ApplicationFiled: October 30, 2009Publication date: November 29, 2012Inventors: Denise A. Silva, Josephine Cheung, Paul Sandberg, Lawrence Roberts, Durga V. Subramanian, John L. Gallagher, Lawrence L. Kuo
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Publication number: 20120161930Abstract: A radio frequency identification system comprises a tag, a back-end system, and a plurality of readers, each reader having at least one antenna coupled thereto. In a cross-read resolution method performed by a first reader, the first reader receives a first tag read of the tag having a tag identifier. The first reader determines a first metric for the first tag read, and transmits the first metric and the tag identifier to a second reader. The first reader receives a second metric and the tag identifier from the second reader, wherein the second metric is determined by the second reader based on a second tag read of the tag by the second reader. The first reader executes an algorithm, based at least in part, on the first metric and the second metric, to determine whether the first reader will report the tag identifier to the back-end system.Type: ApplicationFiled: December 28, 2010Publication date: June 28, 2012Applicant: SYMBOL TECHNOLOGIES, INC.Inventors: PANCHAPAKESAN V. SUBRAMANIAN, ROBERT C. ARNESON, NILAN SOLANKI
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Patent number: 8205530Abstract: Processes for high speed machining of workpiece materials using high performance tools with prolonged tool life and improved surface finish are provided by vibrating the tool and/or the workpiece at a frequency greater than the frequency of shear localization in the primary shear zone or chip segmentation occurring in the absence of tool vibration, with an amplitude sufficient to break up the tool-chip atomic contact, thereby decreasing the tool-chip contact length through decreasing the tool-chip contact time, thereby suppressing accelerated chemical tool wear caused by dissolution of the tool into the workpiece by nanocrystalline grain boundary diffusion and grain boundary sliding mechanisms by preventing shear localization associated with nanocrystalline grain formation in the primary shear zone of the chip, and suppressing oxidation wear of the tool by preventing segmentation of the chip.Type: GrantFiled: October 3, 2008Date of Patent: June 26, 2012Inventor: Sundaresa V. Subramanian
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Publication number: 20120101886Abstract: Techniques are provided for dynamically generating a customized subscription package to a user of one or more virtual environments. A computer apparatus analyzes one or more user attributes of a user of one or more virtual environments. The computer apparatus determines a customized subscription package for the user. The customized subscription package comprises one or more virtual assets associated with the one or more virtual environments. The customized subscription package is offered to the user.Type: ApplicationFiled: October 20, 2011Publication date: April 26, 2012Inventors: Peruvemba V. Subramanian, Zhiqiang Michael Zhang, Lex Bayer
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Publication number: 20120031267Abstract: The present invention provides for a method to cool the recycle gas in a product compressor being used with a cyclic adsorption process. It simplifies the scheme by eliminating need to provide a separate cooler for recycle gas.Type: ApplicationFiled: August 9, 2010Publication date: February 9, 2012Applicant: ADSORPTECH INC.Inventors: APURVA MAHESHWARY, John R. Ambriano, James J. Flaherty, Krishamurti V. Subramanian
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Publication number: 20120024157Abstract: The present invention provides for a method to make a multiple layered adsorber bed to adsorb and remove water, siloxanes, hydrogen sulfide, mercaptans, and carbon-dioxide from Biogas sources such as landfill gas. This bed can be operated by a pressure swing or vacuum swing adsorption process.Type: ApplicationFiled: July 29, 2010Publication date: February 2, 2012Applicant: ADSORPTECH INC.Inventors: Apurva Maheshwary, John R. Ambriano, James J. Flaherty, Krishamurti V. Subramanian
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Publication number: 20110315009Abstract: The present invention provides for a method utilizing adsorber bed(s) and reversible blower(s) operating in a vacuum pressure swing adsorption separation process to separate gases. The process is designed to provide a safer and more cost-effective adsorption system that captures and utilizes energy typically wasted during equipment transitions thereby achieving overall higher power efficiency.Type: ApplicationFiled: June 24, 2010Publication date: December 29, 2011Applicant: ADSORPTECH Inc.Inventors: JOHN R. AMBRIANO, APURVA MAHESHWARY, KRISHNAMURTI V. SUBRAMANIAN, JAMES J. FLAHERTY
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Publication number: 20100086369Abstract: Processes for high speed machining of workpiece materials using high performance tools with prolonged tool life and improved surface finish are provided by vibrating the tool and/or the workpiece at a frequency greater than the frequency of shear localization in the primary shear zone or chip segmentation occurring in the absence of tool vibration, with an amplitude sufficient to break up the tool-chip atomic contact, thereby decreasing the tool-chip contact length through decreasing the tool-chip contact time, thereby suppressing accelerated chemical tool wear caused by dissolution of the tool into the workpiece by nanocrystalline grain boundary diffusion and grain boundary sliding mechanisms by preventing shear localization associated with nanocrystalline grain formation in the primary shear zone of the chip, and suppressing oxidation wear of the tool by preventing segmentation of the chip.Type: ApplicationFiled: October 3, 2008Publication date: April 8, 2010Inventor: Sundaresa V. Subramanian
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Publication number: 20090099925Abstract: A computer implemented method to characterize virtual goods in a virtual environment includes identifying an item exchange in the virtual environment. The context of the item exchange is recorded to characterize details of the virtual environment at the time of the item exchange. The context of the item exchange is added to a repository of contexts characterizing contexts from a number of item exchanges. A request to search for a virtual item is received. The virtual item is matched to a set of items in the repository. The set of items are presented in response to the request.Type: ApplicationFiled: October 3, 2008Publication date: April 16, 2009Inventors: Kaushal N. Mehta, Daniel Kolkowitz, Peruvemba V. Subramanian
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Publication number: 20090006163Abstract: Compensation to be paid to one or more members of an organization is determined. The organization has members organized in a hierarchical structure comprising first-level members, second-level members, and third-level members. A pool of money to be paid to the members in the organization as compensation is identified. A first portion of the pool is assigned to a first-level member. Then the first-level member determines a second portion of the pool from the first portion to be distributed to members below the first-level member and/or an amount from the first portion to be paid to one or more members below the first-level member. The second portion is assigned to the second-level member. Then the second-level member determines a third portion of the pool to be distributed to members below the second-level member and/or an amount from the second portion to be paid to members below the second-level member.Type: ApplicationFiled: June 29, 2007Publication date: January 1, 2009Applicant: Lehman Brothers Inc.Inventors: Arun V. Subramanian, Bruce Jones, Marilyn Law, Manoj Agarwol, Linda Matkowski, Amy Okurowski, Kathy Sorensen, Donna Asaro
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Publication number: 20080104010Abstract: Methods, systems, and apparatuses for configuring a radio frequency identification (RFID) reader using an RFID tag are described. A RFID tag is read by the reader to obtain reader configuration information from the RFID tag. A registry of the reader is modified to include the reader configuration information. A management system is communicated with by the reader, based on information obtained by the reader in the reader configuration information. The reader is thereby configured for operation.Type: ApplicationFiled: October 31, 2006Publication date: May 1, 2008Applicant: Symbol Technologies, Inc.Inventors: P.V. Subramanian, Ajay Avasthi, Sangita Patel, Steven Zimmerman