Patents Examined by William J. Klimowicz
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Patent number: 11393494Abstract: A reader having a sensor stack and a top shield above the sensor stack. The top shield has an upper surface and a lower surface. The reader also includes at least one side shield below the top shield and adjacent to the sensor stack. The reader further includes a decoupling layer between the upper surface of the top shield and the at least one side shield. The decoupling layer is configured to decouple a first portion of the at least one side shield, proximate to the sensor stack, from at least a portion of the top shield.Type: GrantFiled: January 28, 2021Date of Patent: July 19, 2022Assignee: Seagate Technology LLCInventors: Victor Sapozhnikov, Taras Grigorievich Pokhil, Mohammed Shariat Ullah Patwari
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Patent number: 11389924Abstract: The present disclosure includes methods of lapping that include energizing one or more elements that are located proximal to a first magnetoresistive element in a transducer region and generate heat and cause the first magnetoresistive element to selectively expand in the lapping direction relative to one or more other magnetoresistive elements. The present disclosure also includes methods of lapping that use one or more thermal sensors located proximal to the first magnetoresistive element to help control lapping in the lapping direction. The present disclosure includes related lapping systems and sliders.Type: GrantFiled: June 7, 2019Date of Patent: July 19, 2022Assignee: Seagate Technology LLCInventors: Edwin Rejda, Andrew Habermas, Jeff O'Konski, Andrew Sherve, Michael Thomas Johnson, Dongming Liu
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Patent number: 11393493Abstract: According to one embodiment, a magnetic recording head includes a first magnetic pole, a second magnetic pole, and a stacked body provided between the first magnetic pole and the second magnetic pole. The stacked body includes a first magnetic layer, a second magnetic layer provided between the first magnetic layer and the second magnetic pole, a first non-magnetic layer provided between the first magnetic layer and the second magnetic layer, a second non-magnetic layer provided between the second magnetic layer and the second magnetic pole, and a third non-magnetic layer provided between the first magnetic pole and the first magnetic layer. The first magnetic layer includes a first element including at least one of Fe, Co, or Ni. The second magnetic layer includes the first element, and a second element including at least one selected from the group consisting of Cr, V, Mn, Ti, and Sc.Type: GrantFiled: August 10, 2021Date of Patent: July 19, 2022Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATIONInventors: Yuji Nakagawa, Naoyuki Narita, Masayuki Takagishi, Tomoyuki Maeda, Tazumi Nagasawa, Hitoshi Iwasaki, Hirofumi Suto
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Patent number: 11386926Abstract: The magnetic tape includes a non-magnetic support; and a magnetic layer, in which the magnetic layer has a timing-based servo pattern, an edge shape of the timing-based servo pattern, specified by magnetic force microscopy is a shape in which a difference L99.9?L0.1 between a value L99.9 of a cumulative distribution function of 99.9% and a value L0.1 of a cumulative distribution function of 0.1% in a position deviation width from an ideal shape of the magnetic tape in a longitudinal direction is 180 nm or less, and an absolute value ?N of a difference between a refractive index Nxy of the magnetic layer, measured in an in-plane direction and a refractive index Nz of the magnetic layer, measured in a thickness direction is 0.25 or more and 0.40 or less.Type: GrantFiled: January 30, 2020Date of Patent: July 12, 2022Assignee: FUJIFILM CorporationInventors: Norihito Kasada, Eiki Ozawa, Atsushi Musha
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Patent number: 11380357Abstract: The magnetic tape includes a non-magnetic support and a magnetic layer, in which an edge shape of the timing-based servo pattern, specified by magnetic force microscopy is a shape in which a difference between a value L99.9 of a cumulative distribution function of 99.9% and a value L0.1 of a cumulative distribution function of 0.1% in a position deviation width from an ideal shape of the magnetic tape in a longitudinal direction is 180 nm or less, and in which a difference between a spacing Safter measured on a surface of the magnetic layer by an optical interferometry after ethanol cleaning and a spacing Sbefore measured on the surface of the magnetic layer by an optical interferometry before ethanol cleaning is greater than 0 nm and 6.0 nm or less.Type: GrantFiled: May 25, 2021Date of Patent: July 5, 2022Assignee: FUJIFILM CorporationInventors: Eiki Ozawa, Norihito Kasada, Atsushi Musha
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Patent number: 11373679Abstract: A recording head includes a near-field transducer proximate a media-facing surface of the recording head and a waveguide that overlaps and delivers light to the near-field transducer. The recording head includes subwavelength-sized focusing mirror comprising first and second reflectors disposed on cross track sides of the near-field transducer. Each of the first and second reflectors is spaced apart from the media-facing surface by a distance, D, measured along an axis normal to the media-facing surface.Type: GrantFiled: August 19, 2021Date of Patent: June 28, 2022Assignee: SEAGATE TECHNOLOGY LLCInventors: Ruoxi Yang, YongJun Zhao, Nan Zhou, Weibin Chen, Huaqing Yin, Michael Allen Seigler
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Patent number: 11373689Abstract: A carrier of an electronic device is provided with a soft stopper that may maintain the carrier at a service position within a chassis slot. As the carrier is inserted into the slot, at a determined point the soft stopper impinges upon a bumper. Further movement of the carrier into the slot requires the user to force the soft stopper to compress or flex and bypass the bumper. With the chassis slot vertically oriented the soft stopper may maintain the carrier and electronic device in service position, disconnected, while service is performed on a chassis circuit board.Type: GrantFiled: December 18, 2020Date of Patent: June 28, 2022Assignee: ZT Group Int'l, Inc.Inventors: John Woo, Chen An, Mahesh Kumar Varrey, Asim Huda
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Patent number: 11355143Abstract: Described are magnetic recording heads that include an air-bearing surface and that are designed to be useful or potentially useful in two or more different types of fluid atmospheres; also described are related methods of testing the magnetic recording heads and installing the magnetic recording heads in a hard disk drive, as well as hard disk drives that contain a magnetic recording head as described.Type: GrantFiled: June 8, 2020Date of Patent: June 7, 2022Assignee: Seagate Technology LLCInventors: Jiaxi Lu, Matthew Aaron Carper, Abhik Rakshit
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Patent number: 11355146Abstract: The magnetic tape includes a non-magnetic support and a magnetic layer, in which an edge shape of the timing-based servo pattern, specified by magnetic force microscopy is a shape in which a difference between a value L99.9 of a cumulative distribution function of 99.9% and a value L0.1 of a cumulative distribution function of 0.1% in a position deviation width from an ideal shape of the magnetic tape in a longitudinal direction is 180 nm or less, and in which a difference between a spacing Safter measured on a surface of the magnetic layer by an optical interferometry after ethanol cleaning and a spacing Sbefore measured on the surface of the magnetic layer by an optical interferometry before ethanol cleaning is greater than 0 nm and 6.0 nm or less.Type: GrantFiled: January 30, 2020Date of Patent: June 7, 2022Assignee: FUJIFILM CorporationInventors: Eiki Ozawa, Norihito Kasada, Atsushi Musha
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Patent number: 11355148Abstract: The magnetic recording medium includes: a non-magnetic support; and a magnetic layer including ferromagnetic powder, in which a difference Safter?Sbefore between a spacing Safter measured on a surface of the magnetic layer by optical interferometry after ethanol cleaning and a spacing Sbefore measured on the surface of the magnetic layer by optical interferometry before ethanol cleaning is more than 0 nm and 6.0 nm or less, and the non-magnetic support is an aromatic polyester support having a moisture absorption of 0.3% or less.Type: GrantFiled: May 14, 2020Date of Patent: June 7, 2022Assignee: FUJIFILM CorporationInventor: Norihito Kasada
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Patent number: 11355142Abstract: The magnetic tape includes a non-magnetic support; and a magnetic layer in which the magnetic layer has a timing-based servo pattern, an edge shape of the timing-based servo pattern, specified by magnetic force microscopy is a shape in which a difference between a value L99.9 of a cumulative distribution function of 99.9% and a value L0.1 of a cumulative distribution function of 0.1% in a position deviation width from an ideal shape of the magnetic tape in a longitudinal direction is 180 nm or less, and a difference between a spacing Safter measured on a surface of the magnetic layer by an optical interferometry after methyl-ethyl-ketone cleaning and a spacing Sbefore measured on the surface of the magnetic layer by an optical interferometry before methyl-ethyl-ketone cleaning is greater than 0 nm and 15.0 nm or less.Type: GrantFiled: January 30, 2020Date of Patent: June 7, 2022Assignee: FUJIFILM CorporationInventors: Eiki Ozawa, Norihito Kasada, Atsushi Musha
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Patent number: 11344990Abstract: An assembly for lapping multiple row bars, the assembly including a carrier having at least one carrier bond pad, multiple row bars adjacent to each other in a stack, wherein a first row bar of the stack is positioned closer to the carrier than any of the other multiple row bars of the stack and comprises at least one row bar bond pad, an electrical connection between at least one of the carrier bond pads and at least one of the row bar bond pads of the first row bar, and at least one electrical trace extending through at least two of the multiple row bars and electrically connected to at least the first row bar and one additional row bar of the stack. An outermost row bar of the stack includes an outer surface and at least one electronic lapping guide.Type: GrantFiled: December 27, 2019Date of Patent: May 31, 2022Assignee: Seagate Technology LLCInventors: Gary J. Kunkel, Zoran Jandric
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Patent number: 11348609Abstract: According to one embodiment, a head suspension assembly includes a support plate, a wiring member on the support plate, a head, and a piezoelectric element on the wiring member. The wiring member includes a metal plate and a multilayered member including a first insulating layer, a conducting layer, a second insulating layer, and connection pads formed from the conducting layer. Each of the connection pads is overlaid on a recess formed in the first insulating layer, so as to form a recessed portion along the recess, and the second insulating layer includes an opening opposing each of the connection pads. The piezoelectric element is connected to the connection pads by a conductive adhesive filled in the openings and the recessed portions of the connection pads.Type: GrantFiled: February 12, 2021Date of Patent: May 31, 2022Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATIONInventor: Hirofumi Nesori
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Patent number: 11341991Abstract: According to one embodiment, a disk device includes a housing, a temperature sensor in the housing, a magnetic disk in the housing, a magnetic head disposed in the housing to be movable in a radial direction of the magnetic disk, the magnetic head including a write head, a read head, a first thermal actuator, and a second thermal actuator, a power supply circuit which supplies first power to the first thermal actuator and supplies second power to the second thermal actuator, and a controller configured to adjust a power ratio between the first power and the second power, based on at least one of a change in temperature inside the housing and a change in a radial position of the magnetic head in the radial direction.Type: GrantFiled: July 16, 2021Date of Patent: May 24, 2022Assignees: Kabushiki Kaisha Toshiba, Toshiba Electronic Devices & Storage CorporationInventors: Mio Okada, Toru Watanabe, Masami Yamane
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Patent number: 11342650Abstract: According to one embodiment, a disk device includes a housing including a sidewall, a magnetic disk, a wireless communication device including a first communication antenna, and a first insulating member. The sidewall includes a first through portion. The first insulating member closes the first through portion. The first communication antenna is located in the first through portion, is disposed spaced from the housing, and wirelessly communicates with an outside of the housing.Type: GrantFiled: March 10, 2021Date of Patent: May 24, 2022Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATIONInventors: Jia Liu, Taichi Okano, Kota Tokuda, Nobuhiro Yamamoto
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Patent number: 11341990Abstract: A recording head for writing data on tracks of a data storage medium is provided. The recording head includes a writer having a write pole and a trailing shield. The write pole includes a pole tip configured to write on the tracks of the data storage medium. The recording head also includes first and second writing-assistance wires positioned between the pole tip and the trailing shield in a down-track direction to enable a writing-assistance current to be provided to produce an assist magnetic field that augments a write field produced by the write pole.Type: GrantFiled: May 26, 2021Date of Patent: May 24, 2022Assignee: Seagate Technology LLCInventors: Zengyuan Liu, Edward Charles Gage, Tim Rausch, Stephanie Hernandez
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Patent number: 11341997Abstract: According to one embodiment, a disk device includes a plurality of recording media each including a recording layer and an actuator assembly including an actuator block rotatably supported around a rotation shaft, a plurality of arms extending from the actuator block, and suspension assemblies respectively attached to the arms and supporting respective magnetic heads. Of the plurality of arms, at least one arm has vibration characteristics different from those of the other arms.Type: GrantFiled: February 19, 2021Date of Patent: May 24, 2022Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATIONInventor: Tomoyuki Tokizaki
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Patent number: 11335368Abstract: Provided is a recording tape cartridge including: a case that is configured by causing a peripheral wall of an upper case and a peripheral wall of a lower case to abut against each other and accommodates a reel on which a recording tape is wound; a reference surface that is formed on the lower case and serves as a reference in an axial direction of the reel in a case where the case is loaded into a drive device; a noncontact communication medium on which individual information is recorded, the noncontact communication medium being accommodated in the lower case and having a plate shape; a supporting portion that is formed on the lower case and supports the noncontact communication medium such that the noncontact communication medium is disposed while being inclined with respect to the reference surface at an angle of approximately 45 degrees; a position restricting portion that is formed on the lower case and restricts a position of a lower end portion of the noncontact communication medium; and a retaining pType: GrantFiled: March 11, 2021Date of Patent: May 17, 2022Assignee: FUJIFILM CORPORATIONInventor: Yosuke Sumiya
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Patent number: 11335363Abstract: A lifter mechanism includes: a first lifter; a second lifter; a first biasing member that biases the second lifter from a second lower limit position toward a second upper limit position; a locking lever that is displaced between a locked position in which the locking lever locks the second lifter in the second lower limit position and a released position in which the locking lever releases the lock of the second lifter from the second lower limit position; a second biasing member that biases the locking lever from the locked position toward the released position; a holding member that holds the locking lever in the locked position; and a queueing lever that pushes down the second lifter from the second upper limit position to the second lower limit position.Type: GrantFiled: September 17, 2019Date of Patent: May 17, 2022Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Masayuki Shiwa, Tomoyuki Yamashiro
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Patent number: 11315593Abstract: The present disclosure generally relates to a tape embedded drive having a head-gimbal assembly (HGA) and a contact plate. By using a support structure or contact plate beneath the tape, read and write heads can be designed to be narrower than the tape. The support structure or contact plate can stretch or relax the tape so that the spacing between servo tracks on the tape corresponds to the servo to servo spacing on the head. HGAs, which are narrower than the tape, can fly over the tape and read data from and write data to the tape. The HGA can have a single head or multiple heads. Additionally, multiple independent head assemblies can also be used for reading from and writing to the same tape.Type: GrantFiled: April 14, 2021Date of Patent: April 26, 2022Assignee: Western Digital Technologies, Inc.Inventors: Diane L. Brown, Trevor W. Olson