Inventor

Tohru Hasegawa

Inventor

Tokyo, JP

Overview

140→

Patents

2010–2021

Patent span

Physics

Primary field (CPC G)

Patents· 140 as inventor

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

G06Fprimary

G06FElectric digital data processing52%

G11BInformation storage based on relative movement between record carrier and transducer35%

B65GTransport or storage devices, e.g. conveyors for loading or tipping, shop conveyor systems or pneumatic tube conveyors2%

H04LTransmission of digital information, e.g. telegraphic communication2%

Y02DClimate change mitigation technologies in information and communication technologies [ict], i.e. information and communication technologies aiming at the reduction of their own energy use1%

G03GElectrography1%

H04NPictorial communication, e.g. television1%

Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications1%

G01RMeasuring electric variables0%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein0%

PatentTitleYear

11,132,332Method to write data ahead to snapshot area to avoid copy-on-write2021 11,042,329Reordering a sequence of files based on compression rates in data transfer2021 11,042,508Information management2021 11,037,598Detecting damaged areas on magnetic tape based on measuring a number of servo errors2021 11,031,041Detecting damaged areas on magnetic tape based on measuring a number of servo errors2021 11,016,675Optimizing timing for data migration from old generation tapes to new generation tapes2021 11,016,687Writing file information for tape file systems2021 10,831,624Synchronizing data writes2020 10,817,207Management of a multi-library storage system2020 10,802,724Selecting a tape drive having a shortest relative unmount and unload time2020 10,732,843Tape drive data reclamation2020 10,734,021High speed file copy from tape using block grouping2020 10,726,870Timing index writes to a tape medium2020 10,719,483Remote copy with data deduplication functionality2020 10,713,215Allocating non-conflicting inode numbers2020 10,698,828Copying fragmented files between sequential storage mediums2020 10,671,294Recalling files stored on a tape2020 10,649,697Technique for providing information on time to read a file2020 10,642,784Reducing read operations and branches in file system policy checks2020 10,620,865Writing files to multiple tapes2020 10,620,838Reclamation of storage medium2020 10,614,851Verification of data on tape storage system2020 10,579,294Management of object location in hierarchical storage2020 10,572,154Writing data spanning plurality of tape cartridges2020 10,573,350Apparatus, method, and program product for tape positioning2020 10,572,170Writing file information for tape file systems2020 10,566,024Moving cartridges within a shuttle complex2020 10,564,902Dynamic partition allocation for tape file system2020 10,545,698Copy from source medium to target medium2020 10,541,004Shortening the average reposition time to the beginning of files in a magnetic tape2020 10,528,271Managing read/write compatibility between storage devices and storage media2020 10,497,394Detecting damaged areas on magnetic tape based on measuring number of servo errors2019 10,453,485Increasing data storage capacity by reducing index entries2019 10,452,305Tape drive data reclamation2019 10,403,322Moving a car within a shuttle complex based upon library string data chunk counts2019 10,388,304Storing data on unused areas of a storage medium2019 10,372,674File management in a storage system2019 10,366,052Identifying partial update for tape file system2019 10,359,964Reducing time to read many files from tape2019 10,346,078Method of writing a file to a plurality of media and a storage system thereof2019 10,331,348Reading and writing via file system for tape recording system2019 10,331,622Information management2019 10,319,404Positioning shuttle cars in a tape storage shuttle complex2019 10,282,098Writing data spanning plurality of tape cartridges2019 10,281,793Electrochromic dimming device and electrochromic driving device2019 10,268,489Adaptive successive warning message handling2019 10,248,335Reducing a size of backup data in storage2019 10,248,352Management of object location in hierarchical storage2019 10,242,707Timing index writes to a tape medium2019 10,241,703Multivolume group management2019 10,242,709Detecting damaged areas on magnetic tape based on measuring a number of servo errors2019 10,229,718Shortening the average reposition time to the beginning of files in a magnetic tape2019 10,223,038File management in a file system2019 10,222,994Storing selected data in a stub file in a hierarchical storage management system2019 10,216,456Estimating mount time completion in file systems2019 10,204,653Selective index writing prior to unthreading a magnetic recording tape2019 10,178,099System for monitoring access to network within secured site2019 10,169,346File migration in a hierarchical storage system2019 10,170,147Moving cartridges within a shuttle complex2019 10,169,358Data deduplication using a small hash table2019 10,168,920Duplexing file system data2019 10,162,527Scalable and efficient access to and management of data and resources in a tiered data storage system2018 10,152,993Save block data to tape in a reverse order2018 10,134,427Storing data on unused areas of a storage medium2018 10,133,487Provision of information about fragmentation of file on sequential access medium2018 10,120,612Apparatus, method, and program product for tape copying2018 10,089,481Securing recorded data2018 10,078,466Writing files to a storage medium2018 10,073,631Recalling files stored on a tape2018 10,073,632Recalling files stored on a tape2018 10,067,700Storing meta-information on tape recording systems2018 10,067,943Reducing read operations and branches in file system policy checks2018 10,049,194Control access to function of information device2018 10,042,556Reclamation of storage medium2018 10,025,792Method for divisionally managing files on a user basis, and a storage system and computer program product thereof2018 9,997,193Selective index writing prior to unthreading a magnetic recording tape2018 9,996,459Reclaiming of sequential storage medium2018 9,965,189Writing data spanning plurality of tape cartridges2018 9,952,770Responding to recall operations based on file migration time2018 9,946,487Method of moving files in hierarchical storage system2018 9,947,355Encoding information on tape using write offset gaps2018 9,940,338Efficiency of file synchronization in a linear tape file system2018 9,940,061Method of moving files in hierarchical storage system2018 9,916,323'Support for worm cartridges realized by linear tape file system (LTFS)'2018 9,910,617'Data updating in a file system'2018 9,910,624'Data writing in a file system'2018 9,910,859'Support for WORM cartridges realized by linear tape file system (LTFS)'2018 9,891,834'Writing data spanning plurality of tape cartridges'2018 9,858,010'Writing files to a storage medium'2018 9,857,985'Provision of information about fragmentation of file on sequential access medium'2018 9,852,756Method of managing, writing, and reading file on tape2017 9,851,927File management in a file system2017 9,830,102Method of writing a file to a plurality of media and a storage system thereof2017 9,830,085Recalling files stored on a tape2017 9,772,775'Scalable and efficient access to and management of data and resources in a tiered data storage system'2017 9,766,836'Migration of data to sequential access medium'2017 9,766,835'Migration of data to sequential access medium'2017 9,760,305'Migration of data to sequential access medium'2017 9,753,664'Method of detecting tampering of data in tape drive, and file system'2017 9,753,659'Generating enumerated information in which a plurality of files are enumerated in a sequential medium'2017 9,733,859'Method for writing file while spanning file over a plurality of tape cartridges'2017 9,720,615'Writing data to sequential storage medium'2017 9,721,610'Method of managing, writing, and reading file on tape'2017 9,710,474'Method and system for file relocation'2017 9,701,476'Efficient distribution and selection of storage media in a storage medium library'2017 9,671,979'Data writing in a file system'2017 9,632,721'Data writing in a file system'2017 9,632,949'Storage management method, storage management system, computer system, and program'2017 9,620,157'Encoding information on tape using write offset gaps'2017 9,600,493'Copy from source medium to target medium'2017 9,594,658'Method for displaying operation states of modules included in computer system'2017 9,536,561'Writing dummy indices on a tape medium partition'2017 9,513,836'Migration of data to sequential access medium'2016 9,502,052'Writing redundant data on tape media'2016 9,483,190'Average response time improvement from a file system for a tape library'2016 9,477,430'Adapting transfer rate of cached data to prevent stoppage of data transmission'2016 9,459,814'Data writing in a file system'2016 9,442,656'Efficient use of metadata accompanying file writing to media'2016 9,406,334'Method of detecting tampering of data in tape drive, and file system'2016 9,399,553'Efficient distribution and selection of storage media in a storage medium library'2016 9,383,945'Method of writing a file to a plurality of media and a storage system thereof'2016 9,372,868'Efficiency of file synchronization in a linear tape file system'2016 9,357,007'Controlling storing of data'2016 9,292,313'Detection of component operating state by computer'2016 9,292,227'Method for divisionally managing files on a user basis, and a storage system and computer program product thereof'2016 9,280,556'Generating enumerated information in which a plurality of files are enumerated in a sequential medium'2016 9,256,272'Method and system for file relocation'2016 9,256,370'Average response time improvement from a file system for a tape library'2016 9,025,261'Writing and reading data in tape media'2015 9,002,807'Generating enumerated information in which a plurality of files are enumerated in a sequential medium'2015 8,914,145'Efficient movement of storage media in a storage media library'2014 8,903,538'Efficient movement of storage media in a storage media library'2014 8,903,539'Efficient distribution and selection of storage media in a storage medium library'2014 8,898,571'GUI-base application system and method for displaying warnings of the same'2014 8,897,911'Efficient distribution and selection of storage media in a storage medium library'2014 8,836,362'Switch probe and device and system for substrate inspection'2014 8,326,168'Heating device and image forming apparatus'2012 8,081,903'Fixing device, gloss providing device and image forming system'2011 7,856,021'Packet transfer method and apparatus'2010 7,696,720'Battery pack and electronic device'2010

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2010Patents assigned to FUJITSU LTD (2)· patent assignee history

2011–2019Patents assigned to HASEGAWA TOHRU (8)· patent assignee history

2011–2012Patents assigned to FUJI XEROX CO LTD (2)· patent assignee history

2011–2019Based in Kanagawa, JP· patent location history

2014–2021Patents assigned to IBM (133)· patent assignee history

2014–2017Based in Sagamihara, JP· patent location history

2015–2021Based in Tokyo, JP· patent location history

2016Patents assigned to KAMIYA MASANORI (3)· patent assignee history

2018–2020Based in Koto-ku, JP· patent location history

2018Based in Saitama-shi, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
IBM	133	2014–2021
HASEGAWA TOHRUself	8	2011–2019
KAMIYA MASANORI	3	2016
FUJI XEROX CO LTD	2	2011–2012
FUJITSU LTD	2	2010

Locations

Location	Patents	Span
Tokyo, JP	119	2015–2021
Sagamihara, JP	11	2014–2017
Kanagawa, JP	3	2011–2019
Koto-ku, JP	2	2018–2020
Saitama-shi, JP	1	2018