Inventor
NAKAO TORU
JP54 patents
⚠️ This page may combine multiple inventors who share the name “NAKAO TORU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FUJIFILM CORP
35 patentsUS7623310B2Nov 24, 2009
Magnetic recording medium, servo signal write head unit, and servo writer
FUJIFILM CORP22 citations92
US7515374B2Apr 7, 2009
Magnetic tape and manufacturing method thereof, and servo writer
FUJIFILM CORP36 citations92
US7486479B2Feb 3, 2009
Magnetic head assembly with at least one guide block set back from sliding surface of servo signal recording head
FUJIFILM CORP26 citations92
US7602578B2Oct 13, 2009
Servo writer and servo writing process
FUJIFILM CORP9 citations83
US7379258B2May 27, 2008
Inspection method of head unit moving device and manufacture method of inspection use tape therefor
FUJIFILM CORP11 citations83
US7355805B2Apr 8, 2008
Magnetic tape and method of manufacturing magnetic tape, servo writer, and method of and apparatus for specifying servo band
FUJIFILM CORP15 citations83
US11908498B2Feb 20, 2024
Servo pattern recording device, magnetic tape, magnetic tape cartridge, magnetic tape drive, magnetic tape system, detection device, servo pattern recording method, and manufacturing method of magnetic tape
FUJIFILM CORP2 citations73
US11894027B2Feb 6, 2024
Servo pattern recording device, magnetic tape, magnetic tape cartridge, magnetic tape drive, magnetic tape system, detection device, servo pattern recording method, and manufacturing method of magnetic tape
FUJIFILM CORP2 citations73
US12374361B2Jul 29, 2025
Magnetic tape, magnetic tape cartridge, servo pattern recording device, magnetic tape drive, magnetic tape system, detection device, inspection device, servo pattern recording method, manufacturing method of magnetic tape, detection method, and inspection method
FUJIFILM CORP1 citations64
US12518779B2Jan 6, 2026
Magnetic tape cartridge, magnetic tape drive, magnetic tape system, and method of operating magnetic tape drive
FUJIFILM CORP0 citations63
US12073853B2Aug 27, 2024
Magnetic tape cartridge, magnetic tape drive, magnetic tape system, and method of operating magnetic tape drive
FUJIFILM CORP1 citations63
US12026572B2Jul 2, 2024
Noncontact communication medium for recording medium cartridge, recording medium cartridge, and method for manufacturing noncontact communication medium for recording medium cartridge
FUJIFILM CORP0 citations63
US7428117B2Sep 23, 2008
Servo signal inspecting device and method for inspecting servo signal
FUJIFILM CORP2 citations63
US12525257B2Jan 13, 2026
Detection device, inspection device, magnetic tape cartridge, magnetic tape, magnetic tape drive, magnetic tape system, detection method, inspection method, and program
FUJIFILM CORP0 citations62
US12394434B2Aug 19, 2025
Magnetic head, magnetic tape, magnetic tape cartridge, magnetic tape drive, and magnetic tape reading method
FUJIFILM CORP0 citations62
US12367897B2Jul 22, 2025
Servo pattern recording device, magnetic tape, magnetic tape cartridge, magnetic tape drive, magnetic tape system, detection device, servo pattern recording method, and manufacturing method of magnetic tape
FUJIFILM CORP0 citations62
US12308053B2May 20, 2025
Signal processing device, magnetic tape drive, magnetic tape, magnetic tape cartridge, program, signal processing method, and magnetic tape manufacturing method
FUJIFILM CORP0 citations62
US12243564B2Mar 4, 2025
Detection device, inspection device, magnetic tape drive, magnetic tape system, detection method, inspection method, and program
FUJIFILM CORP0 citations62
US12176014B2Dec 24, 2024
Servo pattern recording device, magnetic tape, magnetic tape cartridge, magnetic tape drive, magnetic tape system, detection device, servo pattern recording method, and manufacturing method of magnetic tape
FUJIFILM CORP0 citations62
US12136438B2Nov 5, 2024
Magnetic tape cartridge, magnetic tape drive, magnetic tape system, and method of operating magnetic tape drive
FUJIFILM CORP0 citations62
US12073859B2Aug 27, 2024
Detection device, inspection device, magnetic tape cartridge, magnetic tape, magnetic tape drive, magnetic tape system, detection method, inspection method, and program
FUJIFILM CORP0 citations62
US12068011B2Aug 20, 2024
Magnetic head, magnetic tape, magnetic tape cartridge, magnetic tape drive, and magnetic tape reading method
FUJIFILM CORP0 citations62
US12057148B2Aug 6, 2024
Signal processing device, magnetic tape drive, magnetic tape, magnetic tape cartridge, program, signal processing method, and magnetic tape manufacturing method
FUJIFILM CORP0 citations62
US12027185B2Jul 2, 2024
Detection device, inspection device, magnetic tape cartridge, magnetic tape, magnetic tape drive, magnetic tape system, detection method, inspection method, and program
FUJIFILM CORP0 citations62
US11900969B2Feb 13, 2024
Detection device, inspection device, magnetic tape drive, magnetic tape system, detection method, inspection method, and program
FUJIFILM CORP0 citations62
US11900976B2Feb 13, 2024
Detection device, inspection device, magnetic tape cartridge, magnetic tape, magnetic tape drive, magnetic tape system, detection method, inspection method, and program
FUJIFILM CORP0 citations62
US11705159B2Jul 18, 2023
Magnetic tape cartridge, magnetic tape drive, magnetic tape system, and method of operating magnetic tape drive
FUJIFILM CORP1 citations62
US11276427B2Mar 15, 2022
Magnetic tape recording and reproducing apparatus and recording and reproducing method
FUJIFILM CORP1 citations62
US7672076B2Mar 2, 2010
Servo writer and servo writing method
FUJIFILM CORP4 citations62
US11551718B2Jan 10, 2023
Recording and reproducing device, recording and reproducing method, and magnetic tape cartridge
FUJIFILM CORP0 citations59
US11183206B2Nov 23, 2021
Magnetic tape cartridge, recording device, recording method, and data recording, and reproducing system using a recording medium including a predetermined area for recording defect information
FUJIFILM CORP0 citations59
US11120832B2Sep 14, 2021
Recording and reproducing device, recording and reproducing method, and magnetic tape cartridge
FUJIFILM CORP1 citations59
US12243568B2Mar 4, 2025
Magnetic tape cartridge, magnetic tape drive, memory, magnetic tape, magnetic tape system, and operation method of magnetic tape drive
FUJIFILM CORP0 citations56
US12223987B2Feb 11, 2025
Magnetic tape cartridge, magnetic tape drive, memory, magnetic tape, magnetic tape system, and operation method of magnetic tape drive
FUJIFILM CORP0 citations56
US12272390B2Apr 8, 2025
Magnetic tape cartridge, magnetic tape drive, magnetic tape system, and method of operating magnetic tape drive
FUJIFILM CORP0 citations52
FUJI PHOTO FILM CO LTD
9 patentsUS7142388B2Nov 28, 2006
Servo writer and servo writing process
FUJI PHOTO FILM CO LTD53 citations95
US7187511B2Mar 6, 2007
Magnetic tape and manufacturing method thereof, and servo writer
FUJI PHOTO FILM CO LTD17 citations92
US7012774B2Mar 14, 2006
Magnetic tape and servo writer
FUJI PHOTO FILM CO LTD21 citations92
US6865050B2Mar 8, 2005
Servo signal recording device and servo signal verifying device using edge detection
FUJI PHOTO FILM CO LTD43 citations92
US7142389B2Nov 28, 2006
Tape drive
FUJI PHOTO FILM CO LTD7 citations74
US6906887B2Jun 14, 2005
Record/reproduce equipment of a magnetic tape, a servo control method thereof, a servowriter thereof, and a magnetic tape used in record/reproduce equipment
FUJI PHOTO FILM CO LTD7 citations74
US7133245B2Nov 7, 2006
Servo write head assembly and servo writer
FUJI PHOTO FILM CO LTD5 citations73
US5888637AMar 30, 1999
Magnetic recording medium tape favorably employable for computer data storage
FUJI PHOTO FILM CO LTD6 citations63
US7136254B2Nov 14, 2006
Servo write head assembly and servo writer
FUJI PHOTO FILM CO LTD4 citations62
YOSHITOMI PHARMACEUTICAL
6 patentsUS4258185AMar 24, 1981
Pyridazinone compounds
YOSHITOMI PHARMACEUTICAL39 citations90
US4931443AJun 5, 1990
Piperazine compound and pharmaceutical use thereof
YOSHITOMI PHARMACEUTICAL8 citations73
US4849421AJul 18, 1989
Anti-anxiety benzothiepino(5,4-c]pyridazines
YOSHITOMI PHARMACEUTICAL9 citations73
US5045541ASep 3, 1991
Fused pyridazine compounds and their pharmaceutical use
YOSHITOMI PHARMACEUTICAL18 citations72
US4965264AOct 23, 1990
Thienocinnoline compounds and their pharmaceutical use
YOSHITOMI PHARMACEUTICAL4 citations61
US4843075AJun 27, 1989
Benzothiopyrano[4,3-c]pyridazine compounds, methods for preparing said compounds and uses of said compounds
YOSHITOMI PHARMACEUTICAL6 citations61
Showing the top 50 of 54 patents by PatentIndex Score.