Inventor

Douglas William Dewey

Inventor

Tucson, AZ, US

Overview

47→

Patents

1994–2021

Patent span

Physics

Primary field (CPC G)

Patents· 47 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G06Fprimary

G06FElectric digital data processing75%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests15%

G11BInformation storage based on relative movement between record carrier and transducer10%

PatentTitleYear

11,119,862Delta information volumes to enable chained replication of data by uploading snapshots of data to cloud2021 10,896,088Metadata recovery mechanism for page storage2021 10,884,889Allocating part of a raid stripe to repair a second raid stripe2021 10,783,029Data replication in a storage system2020 10,706,082Deduplication database management2020 10,409,682Distributed RAID system2019 10,394,482Snap tree arbitrary replication2019 10,055,149Intelligent snapshot tree replication2018 9,891,977'Managing spaces in memory'2018 9,870,278'Managing spaces in memory'2018 9,864,646'Managing spaces in memory'2018 9,542,257'Managing spaces in memory'2017 8,812,443'Failure data collection system apparatus and method'2014 8,768,988'Accessing snapshots of a time based file system'2014 8,392,481'Accessing snapshots of a time based file system'2013 8,276,041'Data integrity validation using hierarchical volume management'2012 8,176,405'Data integrity validation in a computing environment'2012 8,108,880'Method and system for enabling state save and debug operations for co-routines in an event-driven environment'2012 8,108,364'Representation of system clock changes in time based file systems'2012 7,979,401'Time based file system for continuous data protection'2011 7,958,517'Apparatus, system, and method for executing functions in an event driven environment from a co-routine environment'2011 7,877,628'Mirroring data between primary and secondary sites'2011 7,739,462'Policy based data shredding for storage controller'2010 7,734,701'Method to write information to an information storage medium using a network attached storage device'2010 7,493,462'Apparatus, system, and method for validating logical volume configuration'2009 7,209,932'Method, system, and program for allocating tasks to a plurality of processors'2007 7,080,223'Apparatus and method to manage and copy computer files'2006 6,973,533'Data storage device providing communication between processing units'2005 6,865,642'Method and apparatus for disk caching for an intermediary controller'2005 6,785,744'Mapping SCSI medium changer commands to mainframe-compatible perform library function commands'2004 6,687,905'Multiple port input/output job scheduling'2004 6,502,108'Cache-failure-tolerant data storage system storing data objects with version code equipped metadata tokens'2002 6,477,628'Backup copy achieving improved efficiency by waiting until rewind/unload command for bulk data copy'2002 6,473,829'Data storage device providing communication between processing units'2002 6,336,173'Storing and tracking multiple copies of data in data storage libraries'2002 6,336,172'Storing and tracking multiple copies of data in a data storage library system'2002 6,249,849'\"Fail-Safe\" updating of redundant data in multiple data storage libraries'2001 6,185,580'Physical information and extensions file and file system translator'2001 5,864,655'Managing removable media in raid and rail environments'1999 5,740,061'Cartridge shifting optimization in a super library'1998 5,727,181'Array management system with volume transform filter'1998 5,652,887'Dynamic Meta commands for peripheral devices'1997 5,537,578'Transparent driving partition for processing logical volumes to be recorded onto optical media'1996 5,481,691'Cache page replacement using sequential LIFO and non-sequential LRU cast out'1996 5,412,668'Parity striping feature for optical disks'1995 5,337,197'Method and system for maintaining directory consistency in magneto-optic media'1994 5,321,824'Accessing last recorded data in a continuation chain'1994

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1994–2018Patents assigned to IBM (38)· patent assignee history

1994–2014Based in Tucson, AZ, US· patent location history

1996–2002Based in Tuscon, AZ, US· patent location history

2012–2014Patents assigned to DEWEY DOUGLAS WILLIAM (6)· patent assignee history

2012–2014Patents assigned to BOYD KENNETH WAYNE (3)· patent assignee history

2012–2014Patents assigned to O'TOOLE CHRISTOPHER DIEBOLD (3)· patent assignee history

2012Based in Tuscson, AZ, US· patent location history

2017–2021Based in Longmont, CO, US· patent location history

2018–2021Patents assigned to SEAGATE TECHNOLOGY LLC (8)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
IBM	38	1994–2018
SEAGATE TECHNOLOGY LLC	8	2018–2021
DEWEY DOUGLAS WILLIAMself	6	2012–2014
BOYD KENNETH WAYNE	3	2012–2014
O'TOOLE CHRISTOPHER DIEBOLD	3	2012–2014

Locations

Location	Patents	Span
Tucson, AZ, US	32	1994–2014
Longmont, CO, US	12	2017–2021
Tuscon, AZ, US	2	1996–2002
Tuscson, AZ, US	1	2012