Patents by Inventor Masahide Sato
Masahide Sato 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).
-
Patent number: 10096333Abstract: An aspect of the present invention relates to a magnetic recording medium, which comprises a nonmagnetic layer comprising nonmagnetic powder and binder on a nonmagnetic support, and a magnetic layer comprising ferromagnetic powder and binder on the nonmagnetic layer, wherein the magnetic layer further comprises carbon black, and a state in which the carbon black is present, as observed in a reflection electron image of a surface of the magnetic layer obtained by a scanning electron microscope, satisfies condition 1 and condition 2 below: condition 1: a number of carbon black particles with a particle size of greater than or equal to 140 nm is greater than or equal to 30 per 1,000 ?m2 of area; and condition 2: a number of carbon black particles with a particle size of greater than or equal to 220 nm is less than or equal to 10 per 1,000 ?m2 of area.Type: GrantFiled: June 30, 2015Date of Patent: October 9, 2018Assignee: FUJIFILM CorporationInventors: Yoshinori Tamada, Masahide Sato, Kazufumi Omura
-
Patent number: 9704524Abstract: The magnetic recording medium has a nonmagnetic layer containing nonmagnetic powder and binder on a nonmagnetic support, and a magnetic layer containing ferromagnetic powder and binder on the nonmagnetic layer, wherein a thickness of the nonmagnetic layer ranges from 0.10 to 0.60 ?m; and the magnetic layer further contains nonmagnetic filler satisfying equation 1 below and having a Vickers hardness of less than or equal to 122 N/mm2: 1.150?D2/D1?1.300??Equation 1: wherein, in equation 1, D1 is a value, with a unit of ?m, obtained from equation 2 below: D ? ? 1 = 6 ? · S , Equation ? ? 2 D2 is an average particle size, with a unit of ?m, of the nonmagnetic filler, and in equation 2, ? denotes a density, with a unit of g/cm3, of the nonmagnetic filler and S denotes a specific surface area, with a unit of m2/g, of the nonmagnetic filler.Type: GrantFiled: March 30, 2016Date of Patent: July 11, 2017Assignee: FUJIFILM CorporationInventor: Masahide Sato
-
Publication number: 20160293196Abstract: The magnetic recording medium has a nonmagnetic layer containing nonmagnetic powder and binder on a nonmagnetic support, and a magnetic layer containing ferromagnetic powder and binder on the nonmagnetic layer, wherein a thickness of the nonmagnetic layer ranges from 0.10 to 0.60 ?m; and the magnetic layer further contains nonmagnetic filler satisfying equation 1 below and having a Vickers hardness of less than or equal to 122 N/mm2: 1. 150?D2/D1?1.300 ??Equation 1: wherein, in equation 1, D1 is a value, with a unit of ?m, obtained from equation 2 below: D ? ? 1 = 6 ? · S , Equation ? ? 2 D2 is an average particle size, with a unit of ?m, of the nonmagnetic filler, and in equation 2, ? denotes a density, with a unit of g/cm3, of the nonmagnetic filler and S denotes a specific surface area, with a unit of m2/g, of the nonmagnetic filler.Type: ApplicationFiled: March 30, 2016Publication date: October 6, 2016Applicant: FUJIFILM CorporationInventor: Masahide SATO
-
Patent number: 9401171Abstract: An aspect of the present invention relates to a magnetic recording medium, which comprises a nonmagnetic layer containing a nonmagnetic powder and a binder and a magnetic layer containing a ferromagnetic powder and a binder in this order on a nonmagnetic support, wherein the nonmagnetic layer has a thickness of equal to or less than 300 nm; a composite elastic modulus as measured on a surface of the magnetic layer ranges from 6.0 to 8.0 GPa; the magnetic layer comprises an abrasive with a specific surface area by BET method ranging from 14 m2/g to 40 m2/g; and a surface abrasive occupancy on a surface of the magnetic layer ranges from 0.2% to 2%.Type: GrantFiled: March 15, 2013Date of Patent: July 26, 2016Assignee: FUJIFILM CorporationInventors: Norihito Kasada, Masahide Sato, Isamu Watanabe
-
Publication number: 20150380037Abstract: An aspect of the present invention relates to a magnetic recording medium, which comprises a nonmagnetic layer comprising nonmagnetic powder and binder on a nonmagnetic support, and a magnetic layer comprising ferromagnetic powder and binder on the nonmagnetic layer, wherein the magnetic layer further comprises carbon black, and a state in which the carbon black is present, as observed in a reflection electron image of a surface of the magnetic layer obtained by a scanning electron microscope, satisfies condition 1 and condition 2 below: condition 1: a number of carbon black particles with a particle size of greater than or equal to 140 nm is greater than or equal to 30 per 1,000 ?m2 of area; and condition 2: a number of carbon black particles with a particle size of greater than or equal to 220 nm is less than or equal to 10 per 1,000 ?m2 of area.Type: ApplicationFiled: June 30, 2015Publication date: December 31, 2015Applicant: FUJIFILM CORPORATIONInventors: Yoshinori TAMADA, Masahide SATO, Kazufumi OMURA
-
Publication number: 20140287271Abstract: The magnetic recording medium comprises protrusions on a surface of a magnetic layer such that when protrusions of equal to or more than 8 nm in height as measured by AFM on the surface of the magnetic layer are divided into protrusions A formed of a spherical material and protrusions B formed of a non-spherical material, a value a, obtained by adding three times a standard deviation ? of heights of protrusions A to an average value of the heights of protrusions A, a value b, obtained by adding three times a standard deviation ? of heights of protrusions B to an average value of the heights of protrusions B, and a difference c, obtained by subtracting b from a, are calculated, conditions 13 nm?a?25 nm, 13 nm?b?25 nm, and 0.0 nm?c?10 nm are satisfied.Type: ApplicationFiled: March 21, 2014Publication date: September 25, 2014Applicant: FUJIFILM CorporationInventor: Masahide SATO
-
Patent number: 8795858Abstract: An aspect of the present invention relates to a magnetic recording medium comprising a nonmagnetic layer containing a nonmagnetic powder and a binder and a magnetic layer containing a ferromagnetic powder and a binder in this order on a nonmagnetic support, wherein the binder of the magnetic layer is a mixture of a vinyl chloride copolymer, polyurethane resin, and polyisocyanate, the polyurethane resin having a glass transition temperature ranging from 90 to 130° C. and a storage elastic modulus at 80° C. ranging from 2.5 to 5.0 GPa, the nonmagnetic layer is a radiation-cured layer formed by curing with radiation a radiation-curable composition comprising a nonmagnetic powder and a binder component, the binder component comprising a radiation-curable vinyl chloride copolymer and a radiation-curable polyurethane resin, and the radiation-curable vinyl chloride copolymer and radiation-curable polyurethane resin both have glass transition temperatures ranging from 30 to 100° C.Type: GrantFiled: March 18, 2011Date of Patent: August 5, 2014Assignee: FUJIFILM CorporationInventors: Masahide Sato, Katsumi Araki, Kazufumi Omura, Tomohiro Ichikawa, Shinji Tsujimoto, Tadahiro Ooishi
-
Patent number: 8589649Abstract: There is disclosed a data storage system used in a computer environment where there are plural host computers and plural storage array controllers. When a remote copy is made while assuring the order of writing across plural storage array controllers, one of the host computers gains copy information about all the storage array controllers associated with the remote copy as a representative. The representative one of the storage array controllers collects and stores copy statuses which are individually managed by the storage array controllers for which a remote copy is made. The host computer gains the copy statuses from the representative controller using an instruction to gain the copy statuses.Type: GrantFiled: November 13, 2012Date of Patent: November 19, 2013Assignee: Hitachi, Ltd.Inventors: Nobuhiro Maki, Masahide Sato, Katsuhisa Miyata, Kenta Ninose
-
Publication number: 20130260179Abstract: An aspect of the present invention relates to a magnetic recording medium, which comprises a nonmagnetic layer containing a nonmagnetic powder and a binder and a magnetic layer containing a ferromagnetic powder and a binder in this order on a nonmagnetic support, wherein the nonmagnetic layer has a thickness of equal to or less than 300 nm; a composite elastic modulus as measured on a surface of the magnetic layer ranges from 6.0 to 8.0 GPa; the magnetic layer comprises an abrasive with a specific surface area by BET method ranging from 14 m2/g to 40 m2/g; and a surface abrasive occupancy on a surface of the magnetic layer ranges from 0.2% to 2%.Type: ApplicationFiled: March 15, 2013Publication date: October 3, 2013Applicant: FUJIFILM CORPORATIONInventors: Norihito KASADA, Masahide SATO, Isamu WATANABE
-
Patent number: 8364925Abstract: This storage system modifies the migration plan in accordance with the state of the migration destination when a plurality of volumes are migrated all at once. Migration-source volumes are migrated collectively to volumes inside the migration-destination storage apparatus. The user can make settings related to migration-source volumes and migration-destination volumes in a migration plan, and can establish a mid-process control plan for modifying the migration plan in the middle of processing. If a failure occurs in the migration-destination storage apparatus subsequent to the commencement of data migration processing, a processing method controller either cancels or temporarily halts the data migration processing, or changes the migration destination, on the basis of the mid-process control plan. When changing the migration destination, a previously selected alternate storage apparatus is selected as the new migration-destination storage apparatus.Type: GrantFiled: February 8, 2012Date of Patent: January 29, 2013Assignee: Hitachi, Ltd.Inventors: Tsukasa Shibayama, Wataru Okada, Yukinori Sakashita, Yuri Hiraiwa, Masahide Sato
-
Patent number: 8332602Abstract: There is disclosed a data storage system used in a computer environment where there are plural host computers and plural storage array controllers. When a remote copy is made while assuring the order of writing across plural storage array controllers, one of the host computers gains copy information about all the storage array controllers associated with the remote copy as a representative. The representative one of the storage array controllers collects and stores copy statuses which are individually managed by the storage array controllers for which a remote copy is made. The host computer gains the copy statuses from the representative controller using an instruction to gain the copy statuses.Type: GrantFiled: September 23, 2011Date of Patent: December 11, 2012Assignee: Hitachi, Ltd.Inventors: Nobuhiro Maki, Masahide Sato, Katsuhisa Miyata, Kenta Ninose
-
Patent number: 8312235Abstract: A data processing system includes a first storage system configured with a virtual logical volume that includes a dynamically expandable volume, a second storage system coupled to the first storage system through a data copy network, a host computer configured to input data to the virtual logical volume, and a management server coupled to the host computer, configured to manage the virtual logical volume.Type: GrantFiled: January 26, 2012Date of Patent: November 13, 2012Assignee: Hitachi, Ltd.Inventors: Tsukasa Shibayama, Wataru Okada, Yukinori Sakashita, Yuri Hiraiwa, Masahide Sato
-
Patent number: 8307185Abstract: Arrangements for transfer and replication of data. A host computer retains a transfer volume management information including HDD identifiers corresponding to a plurality of primary volumes and identifiers of at least one of transfer volumes, wherein, from a plurality of volumes in a first storage device, the host computer extracts a reserve volume as an additional transfer volume, if a capacity usage of the at least one of the transfer volumes reaches or goes above a predetermined level, wherein the host computer transmits an allocation request about the additional transfer volume, wherein, after receiving the allocation request, the first storage device implements the reserve volume as the additional transfer volume corresponding to the at least one of transfer volumes for transfer of write data to the second storage device.Type: GrantFiled: September 22, 2011Date of Patent: November 6, 2012Assignee: Hitachi, Ltd.Inventors: Nobuhiro Maki, Yuri Hiraiwa, Katsuhisa Miyata, Masahide Sato
-
Publication number: 20120137099Abstract: This storage system modifies the migration plan in accordance with the state of the migration destination when a plurality of volumes are migrated all at once. Migration-source volumes are migrated collectively to volumes inside the migration-destination storage apparatus. The user can make settings related to migration-source volumes and migration-destination volumes in a migration plan, and can establish a mid-process control plan for modifying the migration plan in the middle of processing. If a failure occurs in the migration-destination storage apparatus subsequent to the commencement of data migration processing, a processing method controller either cancels or temporarily halts the data migration processing, or changes the migration destination, on the basis of the mid-process control plan. When changing the migration destination, a previously selected alternate storage apparatus is selected as the new migration-destination storage apparatus.Type: ApplicationFiled: February 8, 2012Publication date: May 31, 2012Inventors: Tsukasa SHIBAYAMA, Wataru Okada, Yukinori Sakashita, Yuri Hiraiwa, Masahide Sato
-
Publication number: 20120124287Abstract: A data processing system includes a first storage system configured with a virtual logical volume that includes a dynamically expandable volume, a second storage system coupled to the first storage system through a data copy network, a host computer configured to input data to the virtual logical volume, and a management server coupled to the host computer, configured to manage the virtual logical volume.Type: ApplicationFiled: January 26, 2012Publication date: May 17, 2012Inventors: TSUKASA SHIBAYAMA, Wataru Okada, Yukinori Sakashita, Yuri Hiraiwa, Masahide Sato
-
Patent number: 8140802Abstract: This storage system modifies the migration plan in accordance with the state of the migration destination when a plurality of volumes are migrated all at once. Migration-source volumes are migrated collectively to volumes inside the migration-destination storage apparatus. The user can make settings related to migration-source volumes and migration-destination volumes in a migration plan, and can establish a mid-process control plan for modifying the migration plan in the middle of processing. If a failure occurs in the migration-destination storage apparatus subsequent to the commencement of data migration processing, a processing method controller either cancels or temporarily halts the data migration processing, or changes the migration destination, on the basis of the mid-process control plan. When changing the migration destination, a previously selected alternate storage apparatus is selected as the new migration-destination storage apparatus.Type: GrantFiled: June 24, 2011Date of Patent: March 20, 2012Assignee: Hitachi, Ltd.Inventors: Tsukasa Shibayama, Wataru Okada, Yukinori Sakashita, Yuri Hiraiwa, Masahide Sato
-
Patent number: 8127094Abstract: When migrating data stored in a storage region assigned to a volume to another storage region, the connection status of the host computer and volume is confirmed. When the host computer and volume are connected, the maximum capacity of the volume requested by the host computer is reserved so that it is exclusively secured in another storage region to which data is to be migrated, and when the host computer and volume are not connected, the current capacity of the volume is reserved so that it is exclusively secured in another storage region.Type: GrantFiled: April 28, 2011Date of Patent: February 28, 2012Assignee: Hitachi, Ltd.Inventors: Tsukasa Shibayama, Wataru Okada, Yukinori Sakashita, Yuri Hiraiwa, Masahide Sato
-
Publication number: 20120017058Abstract: There is disclosed a data storage system used in a computer environment where there are plural host computers and plural storage array controllers. When a remote copy is made while assuring the order of writing across plural storage array controllers, one of the host computers gains copy information about all the storage array controllers associated with the remote copy as a representative. The representative one of the storage array controllers collects and stores copy statuses which are individually managed by the storage array controllers for which a remote copy is made. The host computer gains the copy statuses from the representative controller using an instruction to gain the copy statuses.Type: ApplicationFiled: September 23, 2011Publication date: January 19, 2012Inventors: Nobuhiro MAKI, Masahide SATO, Katsuhisa MIYATA, Kenta NINOSE
-
Publication number: 20120011320Abstract: Arrangements for transfer and replication of data. A host computer retains a transfer volume management information including HDD identifiers corresponding to a plurality of primary volumes and identifiers of at least one of transfer volumes, wherein, from a plurality of volumes in a first storage device, the host computer extracts a reserve volume as an additional transfer volume, if a capacity usage of the at least one of the transfer volumes reaches or goes above a predetermined level, wherein the host computer transmits an allocation request about the additional transfer volume, wherein, after receiving the allocation request, the first storage device implements the reserve volume as the additional transfer volume corresponding to the at least one of transfer volumes for transfer of write data to the second storage device.Type: ApplicationFiled: September 22, 2011Publication date: January 12, 2012Inventors: Nobuhiro MAKI, Yuri Hiraiwa, Katsuhisa Miyata, Masahide Sato
-
Patent number: 8082232Abstract: First information representing a plurality of snapshot acquisition time points of the data storage device, journal management data which are second information including the time point at which data are written to the data storage device and the size of the journal for writing the data, and third information representing a plurality of recovery points are acquired. The total transfer data size of one or more data to be transferred in order to recover the data group of the data storage device at the recovery point is calculated for each recovery point on the basis of the first information, journal management data, and third information. A display screen that visualizes the correspondence relationship between the respective recovery points and respective recovery load information representing a recovery load that is expressed on the basis of the total transfer data size calculated for the respective recovery points is displayed.Type: GrantFiled: November 13, 2008Date of Patent: December 20, 2011Assignee: Hitachi, Ltd.Inventors: Wataru Okada, Masayuki Yamamoto, Masahide Sato