Patents by Inventor Kashif Hasan
Kashif Hasan 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: 11961929Abstract: A thermal management device for a photovoltaic panel includes a phase change material layer attached to a back side of the photovoltaic panel. The thermal management device includes a Seebeck thermoelectric generator having a first surface attached to the phase change material layer. The thermal management further device includes a heat sink attached to a second surface of the Seebeck thermoelectric generator. The heat sink is configured with a sinuous coil, a water inlet port and a water outlet port connected to the sinuous coil, and a plurality of heat fins. The thermal management further device includes a casing box configured to enclose its various components, and a glass cover attached to the casing box and configured to cover a top surface of the photovoltaic panel.Type: GrantFiled: November 29, 2022Date of Patent: April 16, 2024Assignee: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALSInventors: Kashif Irshad, Md. Hasan Zahir
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Publication number: 20230129588Abstract: A system hosts a file system representing a replica of file systems hosted on a plurality of nodes, each node storing data on a first storage medium. The system stores data on a second storage medium that is slower than the first storage medium. The system stores on the second storage medium a file received from one of the nodes when the file remains un-accessed by the nodes for a predetermined period of time. The first storage medium on the plurality of nodes stores a pointer to the file and not the data content of the file stored on the second storage medium. The system provides the file from the second storage medium to the first storage medium on one of the nodes while providing the plurality of nodes read and write access to the file stored on the second storage medium using the pointer on the first storage medium.Type: ApplicationFiled: December 21, 2022Publication date: April 27, 2023Applicant: Microsoft Technology Licensing, LLCInventors: Ran KALACH, Spencer Alan BISHOP, Fenghua YUAN, Kashif HASAN, Jason Daniel SHAY
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Patent number: 11562001Abstract: A system hosts a file system representing a replica of file systems hosted on a plurality of nodes, each node storing data on a first storage medium. The system stores data on a second storage medium that is slower than the first storage medium. The system stores on the second storage medium a file received from one of the nodes when the file remains un-accessed by the nodes for a predetermined period of time. The first storage medium on the plurality of nodes stores a pointer to the file and not the data content of the file stored on the second storage medium. The system provides the file from the second storage medium to the first storage medium on one of the nodes while providing the plurality of nodes read and write access to the file stored on the second storage medium using the pointer on the first storage medium.Type: GrantFiled: August 17, 2021Date of Patent: January 24, 2023Assignee: Microsoft Technology Licensing, LLCInventors: Ran Kalach, Spencer Alan Bishop, Fenghua Yuan, Kashif Hasan, Jason Daniel Shay
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Publication number: 20220129484Abstract: A system hosts a file system representing a replica of file systems hosted on a plurality of nodes, each node storing data on a first storage medium. The system stores data on a second storage medium that is slower than the first storage medium. The system stores on the second storage medium a file received from one of the nodes when the file remains un-accessed by the nodes for a predetermined period of time. The first storage medium on the plurality of nodes stores a pointer to the file and not the data content of the file stored on the second storage medium. The system provides the file from the second storage medium to the first storage medium on one of the nodes while providing the plurality of nodes read and write access to the file stored on the second storage medium using the pointer on the first storage medium.Type: ApplicationFiled: August 17, 2021Publication date: April 28, 2022Applicant: Microsoft Technology Licensing, LLCInventors: Ran KALACH, Spencer Alan BISHOP, Fenghua YUAN, Kashif HASAN, Jason Daniel SHAY
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Patent number: 11113312Abstract: A system hosts a file system representing a replica of file systems hosted on a plurality of nodes, each node storing data on a first storage medium. The system stores data on a second storage medium that is slower than the first storage medium. The system stores on the second storage medium a file received from one of the nodes when the file remains un-accessed by the nodes for a predetermined period of time. The first storage medium on the plurality of nodes stores a pointer to the file and not the data content of the file stored on the second storage medium. The system provides the file from the second storage medium to the first storage medium on one of the nodes while providing the plurality of nodes read and write access to the file stored on the second storage medium using the pointer on the first storage medium.Type: GrantFiled: June 29, 2017Date of Patent: September 7, 2021Assignee: Microsoft Technology Licensing, LLCInventors: Ran Kalach, Spencer Alan Bishop, Fenghua Yuan, Kashif Hasan, Jason Daniel Shay
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Patent number: 10180943Abstract: The subject disclosure is directed towards partially recalling file ranges of deduplicated files based on tracking dirty (write modified) ranges (user writes) in a way that eliminates or minimizes reading and writing already-optimized adjacent data. The granularity of the ranges does not depend on any file-system granularity for tracking ranges. In one aspect, lazy flushing of tracking data that preserves data-integrity and crash-consistency is provided. In one aspect, also described is supporting granular partial recall on an open file while a data deduplication system is optimizing that file.Type: GrantFiled: February 28, 2013Date of Patent: January 15, 2019Assignee: Microsoft Technology Licensing, LLCInventors: Ping Xie, Chun Ho Cheung, Kashif Hasan, Abhishek Gupta, Ran Kalach, Daniel Hefenbrock
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Publication number: 20190005106Abstract: A system hosts a file system representing a replica of file systems hosted on a plurality of nodes, each node storing data on a first storage medium. The system stores data on a second storage medium that is slower than the first storage medium. The system stores on the second storage medium a file received from one of the nodes when the file remains un-accessed by the nodes for a predetermined period of time. The first storage medium on the plurality of nodes stores a pointer to the file and not the data content of the file stored on the second storage medium. The system provides the file from the second storage medium to the first storage medium on one of the nodes while providing the plurality of nodes read and write access to the file stored on the second storage medium using the pointer on the first storage medium.Type: ApplicationFiled: June 29, 2017Publication date: January 3, 2019Inventors: Ran KALACH, Spencer Alan BISHOP, Fenghua YUAN, Kashif HASAN, Jason Daniel SHAY
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Patent number: 9152502Abstract: The subject disclosure is directed towards a data storage service that uses hash values, such as substantially collision-free hash values, to maintain data integrity. These hash values are persisted in the form of mappings corresponding to data blocks in one or more data stores. If a data error is detected, these mappings allow the data storage service to search the one or more data stores for data blocks having matching hash values. If a data block is found that corresponds to a hash value for a corrupted or lost data block, the data storage service uses that data block to repair the corrupted or lost data block.Type: GrantFiled: December 21, 2012Date of Patent: October 6, 2015Assignee: Microsoft Technology Licensing, LLCInventors: Ran Kalach, Kashif Hasan, Paul Adrian Oltean, James R. Benton, Chun Ho Cheung, Ahmed Moustafa El-Shimi
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Patent number: 8990171Abstract: The subject disclosure is directed towards transforming a file having at least one undeduplicated portion into a fully deduplicated file. For each of the at least one undeduplicated portion, a deduplication mechanism defines at least one chunk between file offsets associated with the at least one undeduplicated portion. Chunk boundaries associated with the at least one chunk are stored within deduplication metadata. The deduplication mechanism aligns the at least one chunk with chunk boundaries of at least one deduplicated portion of the file. Then, the at least one chunk is committed to a chunk store.Type: GrantFiled: September 1, 2011Date of Patent: March 24, 2015Assignee: Microsoft CorporationInventors: Ran Kalach, Kashif Hasan, Paul Adrian Oltean, James Robert Benton, Chun Ho Cheung, Abhishek Gupta
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Publication number: 20140244601Abstract: The subject disclosure is directed towards partially recalling file ranges of deduplicated files based on tracking dirty (write modified) ranges (user writes) in a way that eliminates or minimizes reading and writing already-optimized adjacent data. The granularity of the ranges does not depend on any file-system granularity for tracking ranges. In one aspect, lazy flushing of tracking data that preserves data-integrity and crash-consistency is provided. In one aspect, also described is supporting granular partial recall on an open file while a data deduplication system is optimizing that file.Type: ApplicationFiled: February 28, 2013Publication date: August 28, 2014Applicant: MICROSOFT CORPORATIONInventors: Ping Xie, Chun Ho Cheung, Kashif Hasan, Abhishek Gupta, Ran Kalach, Daniel Hefenbrock
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Publication number: 20140181575Abstract: The subject disclosure is directed towards a data storage service that uses hash values, such as substantially collision-free hash values, to maintain data integrity. These hash values are persisted in the form of mappings corresponding to data blocks in one or more data stores. If a data error is detected, these mappings allow the data storage service to search the one or more data stores for data blocks having matching hash values. If a data block is found that corresponds to a hash value for a corrupted or lost data block, the data storage service uses that data block to repair the corrupted or lost data block.Type: ApplicationFiled: December 21, 2012Publication date: June 26, 2014Applicant: MICROSOFT CORPORATIONInventors: Ran Kalach, Kashif Hasan, Paul Adrian Oltean, James R. Benton, Chun Ho Cheung, Ahmed Moustafa El-Shimi
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Publication number: 20130060739Abstract: The subject disclosure is directed towards transforming a file having at least one undeduplicated portion into a fully deduplicated file. For each of the at least one undeduplicated portion, a deduplication mechanism defines at least one chunk between file offsets associated with the at least one undeduplicated portion. Chunk boundaries associated with the at least one chunk are stored within deduplication metadata. The deduplication mechanism aligns the at least one chunk with chunk boundaries of at least one deduplicated portion of the file. Then, the at least one chunk is committed to a chunk store.Type: ApplicationFiled: September 1, 2011Publication date: March 7, 2013Applicant: MICROSOFT CORPORATIONInventors: Ran Kalach, Kashif Hasan, Paul Adrian Oltean, James Robert Benton, Chun Ho Cheung, Abhishek Gupta