Patents by Inventor Subramanian Ramachandran
Subramanian Ramachandran 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: 20240143548Abstract: Techniques for continuous ingestion of files using custom file formats are described. A custom file format may include formats not natively supported by a data system. Unstructured files (e.g., images) may also be considered custom file formats. A custom file format may be set using a user defined table function and scanner options.Type: ApplicationFiled: October 27, 2022Publication date: May 2, 2024Inventors: Tyler Arthur Akidau, Thierry Cruanes, Benoit Dageville, Ganeshan Ramachandran Iyer, Subramanian Muralidhar
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Publication number: 20240086381Abstract: Disclosed are techniques for deduplicating files to be ingested by a database. A bloom filter may be built for each of a first set of files to be ingested into a data exchange to generate a set of bloom filters, wherein each of the set of bloom filters is built with a number of hash functions that is based on a desired false positive rate. The set of bloom filters may be stored in the metadata storage of the data exchange. In response to receiving a set of candidate files to be ingested, identifying using the set of bloom filters, candidate files from the set of candidate files that are duplicative of a file in the first set of files and pruning from the set of candidate files, each candidate file identified as being duplicative of a file in the first set of files using the set of bloom filters.Type: ApplicationFiled: November 17, 2023Publication date: March 14, 2024Inventors: Ganeshan Ramachandran Iyer, Raghav Ramachandran, Subramanian Muralidhar
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Patent number: 11921700Abstract: Techniques for creating and using error tables to track errors associated with a base table are described. A command to perform an operation on a base table stored in a network-based data system can be received and executed, causing at least one error. At least one error record corresponding to the at least one error can be inputted into an error table, which is nested with the base table. Contextual information can be added to the at least one error record.Type: GrantFiled: May 18, 2023Date of Patent: March 5, 2024Assignee: Snowflake Inc.Inventors: Abdullah Al Mahmood, Tyler Jones, Xin Huang, Ganeshan Ramachandran Iyer, Jiaxing Liang, Daniel Mills, Subramanian Muralidhar, Daniel E. Sotolongo
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Publication number: 20220075613Abstract: A system and method for updating a cluster of a virtual computing system includes receiving a maintenance window from a user during which to upgrade the cluster, determining available upgrades for the cluster, presenting one or more upgrade plans to the user, such that each of the one or more upgrade plans is created to be completed within the maintenance window and includes one or more of the available upgrades selected based on a total upgrade time computed for each of the available upgrades, receiving selection of one of the one or more upgrade plans from the user, and upgrading the cluster based on the one of the one or more upgrade plans that is selected.Type: ApplicationFiled: August 30, 2021Publication date: March 10, 2022Applicant: Nutanix, Inc.Inventors: Subramanian Ramachandran, Manoj Sudheendhra, Viswanathan Vaidyanathan, Utkarsh Gupta
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Patent number: 10263882Abstract: Systems and techniques are described for dynamically influencing route re-distribution between an exterior gateway protocol (EGP) and an interior gateway protocol (IGP). Some embodiments can dynamically influence which routes are re-distributed into the IGP network for use in cases where traffic destined to that particular remote site is desired to be steered on the desired network/border router. Moreover, some embodiments can dynamically influence route re-distribution from the IGP network to the EGP network for particular destinations so that traffic entering the local site is attracted over a particular network/border router.Type: GrantFiled: October 31, 2017Date of Patent: April 16, 2019Assignee: Riverbed Technology, Inc.Inventors: Subramanian Ramachandran, Anoop A. Gupta
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Publication number: 20180123946Abstract: Systems and techniques are described for dynamically influencing route re-distribution between an exterior gateway protocol (EGP) and an interior gateway protocol (IGP). Some embodiments can dynamically influence which routes are re-distributed into the IGP network for use in cases where traffic destined to that particular remote site is desired to be steered on the desired network/border router. Moreover, some embodiments can dynamically influence route re-distribution from the IGP network to the EGP network for particular destinations so that traffic entering the local site is attracted over a particular network/border router.Type: ApplicationFiled: October 31, 2017Publication date: May 3, 2018Applicant: Riverbed Technology, Inc.Inventors: Subramanian Ramachandran, Anoop A. Gupta
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Patent number: 6918382Abstract: A scooter powered by a hydrogen powered internal combustion engine fueled by a throttled stream of air into which a controlled amount of hydrogen is injected. A hydrogen fuel control system is used to control the amount of hydrogen injected into the throttled air stream using multiple parameters. The amount of hydrogen present in the hydrogen storage unit is monitored using an on-board hydrogen fuel measurement system utilizing a microcontroller and multiple sensors.Type: GrantFiled: August 26, 2002Date of Patent: July 19, 2005Assignee: Energy Conversion Devices, Inc.Inventors: Subramanian Ramachandran, Philip Sievers, Eugene Kurlonko, Krishna Sapru, Zhaosheng Tan, Stanford R. Ovshinsky
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Publication number: 20040035401Abstract: A scooter powered by a hydrogen powered internal combustion engine fueled by a throttled stream of air into which a controlled amount of hydrogen is injected. A hydrogen fuel control system is used to control the amount of hydrogen injected into the throttled air stream using multiple parameters. The amount of hydrogen present in the hydrogen storage unit is monitored using an on-board hydrogen fuel measurement system utilizing a microcontroller and multiple sensors.Type: ApplicationFiled: August 26, 2002Publication date: February 26, 2004Inventors: Subramanian Ramachandran, Philip Sievers, Eugene Kurlonko, Krishna Sapru, Zhaosheng Tan, Stanford R. Ovshinsky
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Patent number: 6616891Abstract: A reversible hydrogen storage alloy capable of absorbing approximately 4 weight percent hydrogen and desorbing up to 2.8 weight percent hydrogen at temperatures up to 100° C. The hydrogen storage alloy is generally composed of titanium, vanadium, chromium, and manganese. Additional elements such as zirconium, yttrium, iron, nickel, zinc, molybdenum, and tantalum may also be included in the alloy.Type: GrantFiled: September 18, 2002Date of Patent: September 9, 2003Assignee: Energy Conversion Devices, Inc.Inventors: Krishna Sapru, Zhaosheng Tan, Mohamed Bazzi, Subramanian Ramachandran, Stanford R. Ovshinsky
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Patent number: 6425251Abstract: A hydrogen gas cooled hydrogen storage element which includes a hydrogen storage alloy material in which hydrogen flow channels are provided. The flow channels provide pathways through the hydrogen storage material to allow for high speed hydrogen gas flow. A portion of the high speed hydrogen flow is stored within the storage material which releases its heat of hydride formation. The remainder of the hydrogen flows through the hydrogen storage material at a sufficient mass flow rate to remove the heat of hydride formation.Type: GrantFiled: June 28, 2001Date of Patent: July 30, 2002Assignee: Energy Conversion Devices, Inc.Inventors: Ned T. Stetson, Subramanian Ramachandran
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Patent number: 6340376Abstract: A method for combining a first metal with a second metal where the melting point of the second metal is higher than the melting point of the first metal. The first and second metals are melted in separate crucibles. The second molten metal is introduced onto or into the first molten metal. Also described is a two-zone furnace for carrying out the method.Type: GrantFiled: December 27, 1999Date of Patent: January 22, 2002Assignee: Energy Conversion Devices, Inc.Inventors: Krishna Sapru, Subramanian Ramachandran, Lu Ming
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Publication number: 20010039803Abstract: A hydrogen gas cooled hydrogen storage element which includes a hydrogen storage alloy material in which hydrogen flow channels are provided. The flow channels provide pathways through the hydrogen storage material to allow for high speed hydrogen gas flow. A portion of the high speed hydrogen flow is stored within the storage material which releases its heat of hydride formation. The remainder of the hydrogen flows through the hydrogen storage material at a sufficient mass flow rate to remove the heat of hydride formation.Type: ApplicationFiled: June 28, 2001Publication date: November 15, 2001Inventors: Ned T. Stetson, Subramanian Ramachandran
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Patent number: 6293110Abstract: A hydrogen gas cooled hydrogen storage element which includes a hydrogen storage alloy material in which hydrogen flow channels are provided. The flow channels provide pathways through the hydrogen storage material to allow for high speed hydrogen gas flow. A portion of the high speed hydrogen flow is stored within the storage material which releases its heat of hydride formation. The remainder of the hydrogen flows through the hydrogen storage material at a sufficient mass flow rate to remove the heat of hydride formation.Type: GrantFiled: December 17, 1999Date of Patent: September 25, 2001Assignee: Energy Conversion Devices, Inc.Inventors: Ned T. Stetson, Subramanian Ramachandran
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Patent number: 5976276Abstract: Mechanically alloyed hydrogen storage materials having a major atomic percentage of magnesium and a minor atomic percentage of at least two elements selected from the group consisting of nickel, molybdenum, iron and titanium. Preferably the mechanical alloy comprises a multi-phase material, including at least one amorphous phase. Also, the at least two elements are preferably either nickel (from about 5 to 15 at. %) and molybdenum (from about 0.5 to 5 at. %) or iron (from about 5 to 15 at. %) and titanium (from about 5 to 15 at. %). The hydrogen storage materials are created by mechanical alloying in a milling apparatus under an inert atmosphere, such as argon, or a mixed atmosphere, such as argon and hydrogen. The speed and length of the milling are varied.Type: GrantFiled: April 24, 1998Date of Patent: November 2, 1999Assignee: Energy Conversion Devices, Inc.Inventors: Krishna Sapru, Lu Ming, Subramanian Ramachandran
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Patent number: 5916381Abstract: Mechanically alloyed hydrogen storage materials having a major atomic percentage of magnesium and a minor atomic percentage of at least two elements selected from the group consisting of nickel, molybdenum, iron and titanium. Preferably the mechanical alloy comprises a multi-phase material, including at least one amorphous phase. Also, the at least two elements are preferably either nickel (from about 5 to 15 at. %) and molybdenum (from about 0.5 to 5 at. %) or iron (from about 5 to 15 at. %) and titanium (from about 5 to 15 at. %). The hydrogen storage materials are created by mechanical alloying in a milling apparatus under an inert atmosphere, such as argon, or a mixed atmosphere, such as argon and hydrogen. The speed and length of the milling are varied.Type: GrantFiled: October 15, 1996Date of Patent: June 29, 1999Assignee: Energy Conversion Devices, Inc.Inventors: Krishna Sapru, Lu Ming, Subramanian Ramachandran