Patents by Inventor Eiji Nakashio
Eiji Nakashio 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).
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Publication number: 20190143637Abstract: A magnetic recording medium according to a first technique includes an elongated substrate having a first surface and a second surface, a first reinforcing layer disposed on the first surface, a second reinforcing layer disposed on the second surface, an adhesion suppressing layer disposed on the second reinforcing layer, and a recording layer disposed on the first reinforcing layer or the adhesion suppressing layer.Type: ApplicationFiled: May 11, 2017Publication date: May 16, 2019Inventors: Eiji NAKASHIO, Yuta AKIMOTO, Tomoe SATO, Yoichi KANEMAKI, Nobuyuki SASAKI, Masaru TERAKAWA, Kazuya HASHIMOTO, Katsunori MAESHIMA, Minoru YAMAGA, Hikaru TERUI, Hiroyuki KOBAYASHI
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Publication number: 20190066723Abstract: The magnetic recording medium includes a support and a magnetic layer containing a magnetic powder. The magnetic powder includes at least either of a magnetic particle containing a cubic ferrite and a magnetic particle containing an ?-phase iron oxide. The magnetic powder has a mean particle size of 10 nm or more and 14 nm or less, the magnetic powder has a mean aspect ratio of 0.75 or more and 1.25 or less, and the magnetic layer has a ten-point mean roughness Rz of 35 nm or less.Type: ApplicationFiled: October 31, 2018Publication date: February 28, 2019Inventors: Eiji NAKASHIO, Minoru YAMAGA, Masaru TERAKAWA, Yoichi KANEMAKI, Katsunori MAESHIMA, Jun HASHIMOTO
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Patent number: 10210892Abstract: A magnetic recording medium includes a support, a recording layer, and a protective layer provided on at least one surface of the support and containing plate-shaped particle powder. The plate-shaped particle powder is stacked in an overlapping manner in a thickness direction of the protective layer such that main surfaces of plate-shaped particles face a surface of the support, and the plate-shaped particles have an average plate ratio of 60 or more.Type: GrantFiled: February 8, 2016Date of Patent: February 19, 2019Assignee: Sony CorporationInventors: Eiji Nakashio, Minoru Yamaga, Jun Takahashi
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Patent number: 10204651Abstract: The magnetic recording medium includes a support and a magnetic layer containing a magnetic powder. The magnetic powder includes at least either of a magnetic particle containing a cubic ferrite and a magnetic particle containing an ?-phase iron oxide. The magnetic powder has a mean particle size of 10 nm or more and 14 nm or less, the magnetic powder has a mean aspect ratio of 0.75 or more and 1.25 or less, and the magnetic layer has a ten-point mean roughness Rz of 35 nm or less.Type: GrantFiled: April 10, 2015Date of Patent: February 12, 2019Assignee: Sony CorporationInventors: Eiji Nakashio, Minoru Yamaga, Masaru Terakawa, Yoichi Kanemaki, Katsunori Maeshima, Jun Hashimoto
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Publication number: 20190013043Abstract: The magnetic recording medium includes a long substrate body, and a magnetic layer including a powder of cubic crystal ferrite magnetic particles. The sum of a squareness ratio in the longitudinal direction and a squareness ratio in the vertical direction is 1.2 or more, and the difference of the squareness ratio in the longitudinal direction and the squareness ratio in the vertical direction is 0.15 or more.Type: ApplicationFiled: December 14, 2016Publication date: January 10, 2019Applicant: Sony CorporationInventors: Eiji NAKASHIO, Masaru TERAKAWA, Yoichi KANEMAKI, Tomoe SATO, Katsunori MAESHIMA, Nobuyuki SASAKI
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Publication number: 20180114541Abstract: Provided is a magnetic recording medium including: a support body; a base layer containing carbon particle powder and metal-containing particle powder; and a recording layer. In a recording surface, a maximum indentation depth h is 85?h?140, and a ratio d of a permanent strain to an elastic recovery (permanent strain/elastic recovery) is 0.95?d?1.25.Type: ApplicationFiled: March 8, 2016Publication date: April 26, 2018Inventors: Eiji NAKASHIO, Futoshi SASAKI, Yuuichi MASUZAWA, Masaru TERAKAWA, Minoru YAMAGA, Yoichi KANEMAKI, Kazuya HASHIMOTO, Tomoe SATO, Nobuyuki SASAKI
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Publication number: 20180108375Abstract: A magnetic recording medium includes a support, a recording layer, and a protective layer provided on at least one surface of the support and containing plate-shaped particle powder. The plate-shaped particle powder is stacked in an overlapping manner in a thickness direction of the protective layer such that main surfaces of plate-shaped particles face a surface of the support, and the plate-shaped particles have an average plate ratio of 60 or more.Type: ApplicationFiled: February 8, 2016Publication date: April 19, 2018Inventors: Eiji NAKASHIO, Minoru YAMAGA, Jun TAKAHASHI
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Publication number: 20170162220Abstract: The magnetic recording medium includes a support and a magnetic layer containing a magnetic powder. The magnetic powder includes at least either of a magnetic particle containing a cubic ferrite and a magnetic particle containing an ?-phase iron oxide. The magnetic powder has a mean particle size of 10 nm or more and 14 nm or less, the magnetic powder has a mean aspect ratio of 0.75 or more and 1.25 or less, and the magnetic layer has a ten-point mean roughness Rz of 35 nm or less.Type: ApplicationFiled: April 10, 2015Publication date: June 8, 2017Inventors: Eiji NAKASHIO, Minoru YAMAGA, Masaru TERAKAWA, Yoichi KANEMAKI, Katsunori MAESHIMA, Jun HASHIMOTO
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Patent number: 9001455Abstract: There is provided a magnetic recording medium including a magnetic layer. The magnetic layer has a servo signal recorded thereon by magnetizing a part of the magnetic layer in a first direction. The first direction contains a component of a perpendicular direction that is perpendicular to a top surface of the magnetic layer. The magnetic layer is pre-magnetized in a second direction before recording of the servo signal. The second direction contains the component of the perpendicular direction. The second direction is opposite to the first direction.Type: GrantFiled: March 12, 2014Date of Patent: April 7, 2015Assignee: Sony CorporationInventors: Eiji Nakashio, Hiroshi Morita, Kiyoyuki Miyata
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Publication number: 20140268414Abstract: There is provided a magnetic recording medium including a magnetic layer. The magnetic layer has a servo signal recorded thereon by magnetizing a part of the magnetic layer in a first direction. The first direction contains a component of a perpendicular direction that is perpendicular to a top surface of the magnetic layer. The magnetic layer is pre-magnetized in a second direction before recording of the servo signal. The second direction contains the component of the perpendicular direction. The second direction is opposite to the first direction.Type: ApplicationFiled: March 12, 2014Publication date: September 18, 2014Applicant: Sony CorporationInventors: Eiji NAKASHIO, Hiroshi MORITA, Kiyoyuki MIYATA
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Publication number: 20100323222Abstract: A magnetic recording medium includes: a nonmagnetic support having both principal planes, a nonmagnetic layer formed on one principal plane of the nonmagnetic support and containing a nonmagnetic powder, a conductive particle and a binder, and a magnetic layer formed on the nonmagnetic layer and containing a magnetic powder, a conductive particle and a binder, wherein each of the nonmagnetic layer and the magnetic layer is prepared in a wet on dry mode, and a conduction point particle size of the conductive particle contained in the magnetic layer falls within the range of 3 times or more and not more than 5 times an average thickness of the magnetic layer.Type: ApplicationFiled: June 15, 2010Publication date: December 23, 2010Applicant: Sony CorporationInventors: Eiji Nakashio, Futoshi Sasaki, Katsunori Maeshima, Yusuke Tamakawa, Kuniko Yamamoto, Minoru Yamaga
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Patent number: 7723901Abstract: A vibrating gyrosensor includes a support substrate on which a wiring pattern having a plurality of lands is formed, and a vibrating element mounted on a surface of the support substrate. The vibrating element includes a base part having a mounting surface on which a plurality of terminals, and a vibrator part integrally projected in a cantilever manner from one of the sides of the base part and having a substrate-facing surface coplanar with the mounting surface of the base part. The vibrator part has a first electrode layer, a piezoelectric layer, and a second electrode layer, which are formed on the substrate-facing surface in that order. Furthermore, a reinforcing part is formed at the base end of the vibrator part so that the sectional area of the vibrator part gradually increases toward the base part.Type: GrantFiled: February 27, 2006Date of Patent: May 25, 2010Assignee: Sony CorporationInventors: Teruo Inaguma, Junichi Honda, Koji Suzuki, Kazuo Takahashi, Eiji Nakashio
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Patent number: 7723905Abstract: A vibrating gyrosensor includes a support substrate on which a wiring pattern having lands is formed. A vibrating element is mounted on a surface of the support substrate. The vibrating element includes a base part having a mounting surface on which a number of terminals connectable to the lands is formed. A vibrator part integrally projects from a side of the base part and has a substrate-facing surface coplanar with the mounting surface of the base part. The vibrator part has a first electrode layer, a piezoelectric layer, and a second electrode layer which are laminated on the substrate-facing surface. The vibrator part vibrates when an AC signal is applied between the first and second electrode layers. The central electric field strength of the AC signal is set at a position shifting to the positive direction from the center of a hysteresis loop of the piezoelectric layer.Type: GrantFiled: May 7, 2008Date of Patent: May 25, 2010Assignee: Sony CorporationInventors: Kazuo Takahashi, Teruo Inaguma, Junichi Honda, Koji Suzuki, Shigeto Watanabe, Shin Sasaki, Eiji Nakashio, Manabu Aizawa
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Publication number: 20090320593Abstract: A vibration type gyro sensor according to the present invention includes vibrating elements 1X and 1Y which detect angular velocities, a support substrate 2 which is electrically connected to the vibrating elements 1X and 1Y and which supports the vibrating elements 1X and 1Y, a relay substrate 4 which is electrically connected to the support substrate 2 and which includes external connection terminals 3, and buffer members 5 which are disposed between the support substrate 2 and the relay substrate 4 and which suppress transmission of strain and vibration between the support substrate 2 and the relay substrate 4. The vibration type gyro sensor is capable of stabilizing vibration characteristics without being influenced by strain and vibration.Type: ApplicationFiled: June 29, 2007Publication date: December 31, 2009Applicant: SONY CORPORATIONInventors: Eiji Nakashio, Shigeto Watanabe, Shin Sasaki, Teruo Inaguma, Junichi Honda, Kazuo Kurihara, Yuji Shishido, Tomoyuki Takahashi
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Patent number: 7583012Abstract: There is a need for a piezoelectric element capable of improving a productivity and a yield without impairing the piezoelectric characteristic and a method for manufacturing the same. A piezoelectric element is provided with a substrate, a first electrode film disposed on the substrate, a piezoelectric film disposed on the first electrode film, and a second electrode film disposed on the piezoelectric film. The piezoelectric film has a laminated structure composed of a plurality of crystallized piezoelectric thin films. The piezoelectric film having a predetermined thickness is formed by repeated cycles of a film formation step of forming a piezoelectric thin film and a crystallization heat treatment step of heat-treating the piezoelectric thin film to effect crystallization. In this manner, a piezoelectric film exhibiting uniform crystallinity in the film thickness direction may be produced.Type: GrantFiled: March 3, 2006Date of Patent: September 1, 2009Assignee: Sony CorporationInventors: Eiji Nakashio, Junichi Honda, Takashi Tamura, Koji Suzuki, Teruo Inaguma, Manabu Aizawa, Kazuo Takahashi, Tadashi Sakurai
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Patent number: 7578187Abstract: A vibrating gyroscopic sensor element including a cantilever vibrator, at least one first depression on the cantilever vibrator, a pair of detection electrodes provided on the cantilever vibrator and at least one second depression on the cantilever vibrator. The cantilever vibrator projects from a base area of the vibrating gyroscopic sensor element and the first depression is effective to adjust the frequency difference between a vertical resonance frequency and a horizontal resonance frequency of the vibrator. Further, the second depression is effective to adjust the difference of signals output from the detection electrodes.Type: GrantFiled: December 5, 2007Date of Patent: August 25, 2009Assignee: Sony CorporationInventors: Kazuo Takahashi, Teruo Inaguma, Manabu Aizawa, Koji Suzuki, Shin Sasaki, Eiji Nakashio
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Publication number: 20090174292Abstract: A vibrating gyrosensor includes a support substrate on which a wiring pattern having lands is formed. A vibrating element is mounted on a surface of the support substrate. The vibrating element includes a base part having a mounting surface on which a number of terminals connectable to the lands is formed. A vibrator part integrally projects from a side of the base part and has a substrate-facing surface coplanar with the mounting surface of the base part. The vibrator part has a first electrode layer, a piezoelectric layer, and a second electrode layer which are laminated on the substrate-facing surface. The vibrator part vibrates when an AC signal is applied between the first and second electrode layers. The central electric field strength of the AC signal is set at a position shifting to the positive direction from the center of a hysteresis loop of the piezoelectric layer.Type: ApplicationFiled: May 7, 2008Publication date: July 9, 2009Applicant: SONY CORPORATIONInventors: Kazuo Takahashi, Teruo Inaguma, Junichi Honda, Koji Suzuki, Shigeto Watanabe, Shin Sasaki, Eiji Nakashio, Manabu Aizawa
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Patent number: 7511928Abstract: In a magnetic tunnel effect type magnetic head 20 having a magnetic tunnel junction element 26 sandwiched with conductive gap layers 25 and 27 between a pair of magnetic shielding layers 24 and 28, the conductive gap layers 25 and 27 are formed from at least one nonmagnetic metal layer containing a metal element selected from Ta, Ti, Cr, W, Mo, V, Nb and Zr. Therefore, the magnetic head 20 can have an improved face opposite to a magnetic recording medium.Type: GrantFiled: June 20, 2005Date of Patent: March 31, 2009Assignee: Sony CorporationInventors: Eiji Nakashio, Seiji Onoe, Junichi Sugawara
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Publication number: 20080222865Abstract: A piezoelectric element with a substrate, a first electrode film disposed on the substrate, a piezoelectric film disposed on the first electrode film, and a second electrode film disposed on the piezoelectric film, and a method of forming same. The piezoelectric film has a laminated structure composed of a plurality of crystallized piezoelectric thin films. The piezoelectric film has a predetermined thickness and is formed by repeated cycles of a film formation step of forming a piezoelectric thin film and a crystallization heat treatment step of heat-treating the piezoelectric thin film to effect crystallization.Type: ApplicationFiled: May 19, 2008Publication date: September 18, 2008Applicant: SONY CORPORATIONInventors: Eiji Nakashio, Junichi Honda, Takashi Tamura, Koji Suzuki, Teruo Inaguma, Manabu Aizawa, Kazuo Takahashi, Tadashi Sakurai
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Patent number: 7400078Abstract: A vibrating gyrosensor includes a support substrate on which a wiring pattern having a plurality of lands is formed, and vibrating elements mounted on a surface of the support substrate, wherein at least two vibrating elements are mounted on the support substrate, for detecting vibrations in different axial directions.Type: GrantFiled: March 3, 2006Date of Patent: July 15, 2008Assignee: Sony CorporationInventors: Kazuo Takahashi, Teruo Inaguma, Junichi Honda, Koji Suzuki, Shigeto Watanabe, Shin Sasaki, Eiji Nakashio, Manabu Aizawa