Inventor
DAS RAJSEKHAR
US38 patents
⚠️ This page may combine multiple inventors who share the name “DAS RAJSEKHAR”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MICROSOFT TECHNOLOGY LICENSING LLC
27 patentsUS11423151B2Aug 23, 2022
Systems and methods for managing data storage cluster synchronization
MICROSOFT TECHNOLOGY LICENSING LLC2 citations73
US10446174B2Oct 15, 2019
File system for shingled magnetic recording (SMR)
MICROSOFT TECHNOLOGY LICENSING LLC4 citations73
US11216416B2Jan 4, 2022
Managing snapshotting of a dataset using an ordered set of B+ trees
MICROSOFT TECHNOLOGY LICENSING LLC2 citations71
US10298649B2May 21, 2019
Guaranteeing stream exclusivity in a multi-tenant environment
MICROSOFT TECHNOLOGY LICENSING LLC2 citations66
US12411956B2Sep 9, 2025
Systems and methods for managing data storage cluster synchronization
MICROSOFT TECHNOLOGY LICENSING LLC0 citations62
US11868477B2Jan 9, 2024
Scale out file system using refs and scale out volume
MICROSOFT TECHNOLOGY LICENSING LLC0 citations62
US10235077B2Mar 19, 2019
Resource arbitration for shared-write access via persistent reservation
MICROSOFT TECHNOLOGY LICENSING LLC1 citations62
US12498887B2Dec 16, 2025
File system improvements for zoned storage device operations
MICROSOFT TECHNOLOGY LICENSING LLC0 citations61
US12118245B2Oct 15, 2024
File system improvements for zoned storage device operations
MICROSOFT TECHNOLOGY LICENSING LLC0 citations61
US12013814B2Jun 18, 2024
Managing snapshotting of a dataset using an ordered set of B+ trees
MICROSOFT TECHNOLOGY LICENSING LLC0 citations61
US11269716B2Mar 8, 2022
Self-healing operations for root corruption in a file system
MICROSOFT TECHNOLOGY LICENSING LLC0 citations61
US11163730B2Nov 2, 2021
Hard link operations for files in a file system
MICROSOFT TECHNOLOGY LICENSING LLC0 citations61
US10754549B2Aug 25, 2020
Append only streams for storing data on a solid state device
MICROSOFT TECHNOLOGY LICENSING LLC1 citations56
US9832267B2Nov 28, 2017
Resource arbitration for shared-write access via persistent reservation
MICROSOFT TECHNOLOGY LICENSING LLC1 citations51
US12524375B2Jan 13, 2026
Container-level management of compressed file system data
MICROSOFT TECHNOLOGY LICENSING LLC0 citations50
US12306805B2May 20, 2025
Dynamically resizing root nodes of hierarchical data structures
MICROSOFT TECHNOLOGY LICENSING LLC0 citations50
US12141103B2Nov 12, 2024
File system metadata layout for append-only storage
MICROSOFT TECHNOLOGY LICENSING LLC0 citations50
US11995032B2May 28, 2024
Reduced-latency data operations for files in a file system
MICROSOFT TECHNOLOGY LICENSING LLC0 citations50
US11803517B2Oct 31, 2023
File system for anonymous write
MICROSOFT TECHNOLOGY LICENSING LLC0 citations50
US10430106B2Oct 1, 2019
Policy based tiered allocation for hybrid storage devices
MICROSOFT TECHNOLOGY LICENSING LLC0 citations50
US11144505B2Oct 12, 2021
Data operations using a cache table in a file system
MICROSOFT TECHNOLOGY LICENSING LLC0 citations44
US12574262B2Mar 10, 2026
Confidential virtual machine using state-seperated storage architecture
MICROSOFT TECHNOLOGY LICENSING LLC0 citations43
US10394717B1Aug 27, 2019
Central processing unit cache friendly multithreaded allocation
MICROSOFT TECHNOLOGY LICENSING LLC0 citations40
US10768829B2Sep 8, 2020
Opportunistic use of streams for storing data on a solid state device
MICROSOFT TECHNOLOGY LICENSING LLC0 citations38
US9836419B2Dec 5, 2017
Efficient data movement within file system volumes
MICROSOFT TECHNOLOGY LICENSING LLC0 citations38
US10733045B2Aug 4, 2020
Online repair of metadata for structured data including file systems
MICROSOFT TECHNOLOGY LICENSING LLC0 citations35
US10489240B2Nov 26, 2019
Efficient detection of corrupt data
MICROSOFT TECHNOLOGY LICENSING LLC0 citations30
MICROSOFT CORP
5 patentsUS7840730B2Nov 23, 2010
Cluster shared volumes
MICROSOFT CORP53 citations95
US9116904B2Aug 25, 2015
File system operation on multi-tiered volume
MICROSOFT CORP20 citations91
US7644305B2Jan 5, 2010
Quorum establishment based on a vote from a voting device
MICROSOFT CORP13 citations79
US7877553B2Jan 25, 2011
Sharing volume data via shadow copies using differential areas
MICROSOFT CORP2 citations56
US9547549B2Jan 17, 2017
Handling file system corruption
MICROSOFT CORP1 citations50
MASSA MICHAEL T
3 patentsUS7774469B2Aug 10, 2010
Consistent cluster operational data in a server cluster using a quorum of replicas
MASSA MICHAEL T100 citations96
US8850018B2Sep 30, 2014
Consistent cluster operational data in a server cluster using a quorum of replicas
MASSA MICHAEL T25 citations90
US8850007B2Sep 30, 2014
Consistent cluster operational data in a server cluster using a quorum of replicas
MASSA MICHAEL T7 citations82