Patents by Inventor Shuichi Murakami
Shuichi Murakami 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: 20140228693Abstract: A blood-pressure sensor includes a substrate, a first electrode, a magnetization fixed layer, a nonmagnetic layer, a magnetization free layer, and a second electrode. The substrate is bent to generate a tensile stress at least in a first direction. The first electrode is provided on the substrate. The magnetization fixed layer has magnetization to be fixed in a second direction, and is provided on the substrate. The nonmagnetic layer is provided on the magnetization fixed layer. The magnetization free layer has a magnetization direction which is different from the first direction and from a direction perpendicular to the first direction. The second electrode is provided on the magnetization free layer.Type: ApplicationFiled: April 25, 2014Publication date: August 14, 2014Applicant: Kabushiki Kaisha ToshibaInventors: Hiromi YUASA, Hideaki FUKUZAWA, Yoshihiko FUJI, Alexander Devin GIDDINGS, Michiko HARA, Shuichi MURAKAMI
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Publication number: 20140211338Abstract: A magnetic head according to an embodiment includes a first magnetic shield and a second magnetic shield that are opposed to each other, and a magnetoresistive film arranged between the first magnetic shield and the second magnetic shield, and including a first magnetic layer including a first metal layer that contains 90 at. % or more of Fe and a first Heusler alloy layer, a second magnetic layer arranged on a side of the first Heusler alloy layer opposite from the first magnetic layer, and an intermediate layer arranged between the first Heusler alloy layer and the second magnetic layer.Type: ApplicationFiled: January 27, 2014Publication date: July 31, 2014Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Hitoshi IWASAKI, Shuichi MURAKAMI, Masayuki TAKAGISHI, Susumu HASHIMOTO, Yousuke ISOWAKI, Naoki HASE, Masaki KADO
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Publication number: 20140207006Abstract: A strain sensor element comprises a laminated film which has a magnetic free layer, a spacer layer, and a magnetic reference layer. The free layer has a variable magnetization direction and a out-of-plane magnetization direction. The reference layer has a variable magnetization direction which is pinned more strongly than the magnetization of the free layer. The spacer layer provided between the free layer and the reference layer. A pair of electrodes is provided with a plane of the laminated film. A substrate is provided with either of the pair electrodes and can be strained. The rotation angle of the magnetization of the free layer is different from the rotation angle of the magnetization of the reference layer when the substrate is distorted. Electrical resistance is changed depending on the magnetization angle between the free layer and the reference layer, which allows the element to operate as a strain sensor.Type: ApplicationFiled: March 19, 2014Publication date: July 24, 2014Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Alexander Devin GIDDINGS, Hideaki Fukuzawa, Yoshihiko Fuji, Hiromi Yuasa, Michiko Hara, Shuichi Murakami
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Publication number: 20140207007Abstract: A strain sensor element comprises a laminated film which has a magnetic free layer, a spacer layer, and a magnetic reference layer. The free layer has a variable magnetization direction and a out-of-plane magnetization direction. The reference layer has a variable magnetization direction which is pinned more strongly than the magnetization of the free layer. The spacer layer provided between the free layer and the reference layer. A pair of electrodes is provided with a plane of the laminated film. A substrate is provided with either of the pair electrodes and can be strained. The rotation angle of the magnetization of the free layer is different from the rotation angle of the magnetization of the reference layer when the substrate is distorted. Electrical resistance is changed depending on the magnetization angle between the free layer and the reference layer, which allows the element to operate as a strain sensor.Type: ApplicationFiled: March 19, 2014Publication date: July 24, 2014Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Alexander Devin GIDDINGS, Hideaki FUKUZAWA, Yoshihiko FUJI, Hiromi YUASA, Mlchiko HARA, Shuichi MURAKAMI
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Publication number: 20140177101Abstract: According to one embodiment, an oscillation layer of a spin torque oscillator for use in a magnetic head includes a stack of first and second metal films. The first metal film is formed by repetitively stacking a combination of first and second magnetic layers twice or more. The thickness of the first metal film is 0.4 to 5.0 nm. The first magnetic layer has a bcc structure and contains Fe. The second magnetic layer contains Co. The second metal film is made of Cu.Type: ApplicationFiled: May 28, 2013Publication date: June 26, 2014Applicant: Kabushiki Kaisha ToshibaInventors: Katsuhiko KOUI, Shuichi Murakami, Mariko Shimizu, Kenichiro Yamada
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Patent number: 8760154Abstract: A strain sensor element comprises a laminated film which has a magnetic free layer, a spacer layer, and a magnetic reference layer. The free layer has a variable magnetization direction and a out-of-plane magnetization direction. The reference layer has a variable magnetization direction which is pinned more strongly than the magnetization of the free layer. The spacer layer provided between the free layer and the reference layer. A pair of electrodes is provided with a plane of the laminated film. A substrate is provided with either of the pair electrodes and can be strained. The rotation angle of the magnetization of the free layer is different from the rotation angle of the magnetization of the reference layer when the substrate is distorted. Electrical resistance is changed depending on the magnetization angle between the free layer and the reference layer, which allows the element to operate as a strain sensor.Type: GrantFiled: May 18, 2011Date of Patent: June 24, 2014Assignee: Kabushiki Kaisha ToshibaInventors: Alexander Devin Giddings, Hideaki Fukuzawa, Yoshihiko Fuji, Hiromi Yuasa, Michiko Hara, Shuichi Murakami
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Publication number: 20140160598Abstract: A magnetic head includes a main magnetic pole, a trailing shield that forms a magnetic circuit with the main magnetic pole, a spin torque oscillator that is provided between the main magnetic pole and the trailing shield, a first cooling layer that partially has a Heusler structure, and a second cooling layer that is provided on the first cooling layer and mainly comprised of silver. The first cooling layer and the second cooling layer are provided either between the main magnetic pole and spin torque oscillator or between the trailing shield and the spin torque oscillator, with either of the two cooling layers being disposed closer to the spin torque oscillator. A third cooling layer may be formed to be in contact with the first cooling layer.Type: ApplicationFiled: June 11, 2013Publication date: June 12, 2014Inventors: Masahiro TAKASHITA, Shuichi MURAKAMI, Naoki HASE, Katsuhiko KOUI
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Publication number: 20140153139Abstract: According to one embodiment, a method of manufacturing a magnetoresistive element includes a layered structure and a pair of electrodes, the layered structure including a cap layer, a magnetization pinned layer, a magnetization free layer, a spacer layer and a functional layer provided in the magnetization pinned layer, between the magnetization pinned layer and the spacer layer, between the spacer layer and the magnetization free layer, in the magnetization free layer, or between the magnetization free layer and the cap layer and including an oxide, the method including forming a film including a base material of the functional layer, performing an oxidation treatment on the film using a gas containing oxygen in a form of at least one selected from the group consisting of molecule, ion, plasma and radical, and performing a reduction treatment using a reducing gas on the film after the oxidation treatment.Type: ApplicationFiled: February 10, 2014Publication date: June 5, 2014Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Akihiko TAKEO, Yoshihiko FUJI, Hiromi YUASA, Michiko HARA, Shuichi MURAKAMI, Hideaki FUKUZAWA
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Publication number: 20140146420Abstract: According to one embodiment, a magnetic head includes a spin torque oscillator formed between a main magnetic pole and auxiliary magnetic pole. The spin torque oscillator includes a transmission-type spin transfer layer, first interlayer, oscillation layer, second interlayer, and reflection-type spin transfer layer. The transmission-type spin transfer layer includes a first perpendicular magnetization film and first interface magnetic layer. The first interface magnetic layer contains at least one element selected from Fe, Co, and Ni, and at least one element selected from Cr, V, Mn, Ti, and Sc. The reflection-type spin transfer layer includes a second perpendicular magnetization film.Type: ApplicationFiled: December 9, 2013Publication date: May 29, 2014Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Mariko Shimizu, Katsuhiko Koui, Shuichi Murakami, Hiromi Yuasa
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Patent number: 8685491Abstract: According to one embodiment, a method of manufacturing a magnetoresistive element includes a layered structure and a pair of electrodes, the layered structure including a cap layer, a magnetization pinned layer, a magnetization free layer, a spacer layer and a functional layer provided in the magnetization pinned layer, between the magnetization pinned layer and the spacer layer, between the spacer layer and the magnetization free layer, in the magnetization free layer, or between the magnetization free layer and the cap layer and including an oxide, the method including forming a film including a base material of the functional layer, performing an oxidation treatment on the film using a gas containing oxygen in a form of at least one selected from the group consisting of molecule, ion, plasma and radical, and performing a reduction treatment using a reducing gas on the film after the oxidation treatment.Type: GrantFiled: July 19, 2011Date of Patent: April 1, 2014Assignee: Kabushiki Kaisha ToshibaInventors: Akihiko Takeo, Yoshihiko Fuji, Hiromi Yuasa, Michiko Hara, Shuichi Murakami, Hideaki Fukuzawa
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Patent number: 8685598Abstract: Disclosed is a pellicle having a mask adhesive layer having appropriate softness, having a small adhesive residue after being peeled off from a mask, and having good handling characteristics; and a pellicle for preventing position deviation of patterns, in particular in double patterning. The pellicle of the present invention includes a pellicle frame, a pellicle membrane disposed on one end surface of the pellicle frame, and a mask adhesive layer disposed on other end surface of the pellicle frame; wherein the mask adhesive layer includes 35 to 170 weight parts of a hardness adjuster (B) containing a polypropylene (b1) and a propylene based elastomer (b2) per 100 weight parts of a styrene resin (A); and in an electron microscopic photograph of the mask adhesive layer, a phase-separated structure of a continuous phase of the styrene resin (A) and a discontinuous phase of the hardness adjuster (B) is observed.Type: GrantFiled: October 6, 2010Date of Patent: April 1, 2014Assignee: Mitsui Chemicals, Inc.Inventors: Shuichi Murakami, Takashi Kozeki, Minehiro Mori
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Patent number: 8649127Abstract: According to one embodiment, a magneto-resistive effect device includes a stacked body, a pair of electrodes for supplying current in a stacking direction of the stacked body. The stacked body includes a first magnetic layer, a second magnetic layer, and a spacer layer disposed between the first magnetic layer and the second magnetic layer. At least one of the first magnetic layer, the second magnetic layer, and the spacer layer includes an oxide layer formed from a metal oxide. A crystalline structure of the metal oxide is a NaCl structure.Type: GrantFiled: September 22, 2011Date of Patent: February 11, 2014Assignee: Kabushiki Kaisha ToshibaInventors: Yoshihiko Fuji, Michiko Hara, Hideaki Fukuzawa, Hiromi Yuasa, Shuichi Murakami
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Publication number: 20140009854Abstract: According to one embodiment, a magneto-resistance effect device includes: a multilayer structure having a cap layer; a magnetization pinned layer; a magnetization free layer provided between the cap layer and the magnetization pinned layer; a spacer layer provided between the magnetization pinned layer and the magnetization free layer; a function layer which is provided in the magnetization pinned layer, between the magnetization pinned layer and the spacer layer, between the spacer layer and the magnetization free layer, in the magnetization free layer, or between the magnetization free layer and the cap layer, the function layer having oxide containing at least one element selected from Zn, In, Sn and Cd, and at least one element selected from Fe, Co and Ni; and a pair of electrodes for applying a current perpendicularly to a film plane of the multilayer structure.Type: ApplicationFiled: September 12, 2013Publication date: January 9, 2014Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Yoshihiko FUJI, Hideaki FUKUZAWA, Hiromi YUASA, Michiko HARA, Shuichi MURAKAMI
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Publication number: 20130329317Abstract: An example magnetic writing head includes a main magnetic pole and a coil to generate an ampere magnetic field to magnetize the main magnetic pole to cause the magnetized main magnetic pole to generate a magnetic field. The laminated body includes a first magnetic layer, and a second magnetic layer.Type: ApplicationFiled: August 13, 2013Publication date: December 12, 2013Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Kenichiro YAMADA, Hitoshi IWASAKI, Junichi AKIYAMA, Masayuki TAKAGISHI, Tomomi FUNAYAMA, Masahiro TAKASHITA, Mariko SHIMIZU, Shuichi MURAKAMI, Tadashi KAI
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Patent number: 8605391Abstract: According to one embodiment, a magnetic head has a main magnetic pole, a write-shield constituting the main magnetic pole and a magnetic circuit, and a spin torque oscillation element provided between the main magnetic pole and the write-shield. The spin torque oscillation element is provided with a first oscillation layer, a nonmagnetic spin sink layer, a second oscillation layer, a nonmagnetic intermediate layer, and a spin injection layer provided in sequence from the write-shield side to the main magnetic pole side. The nonmagnetic spin sink layer is formed of at least one element selected from the group consisting of Ru, Rh, Ta, W, Cr, Ir, Mo, Re, Nb, Pt, and Pd.Type: GrantFiled: June 22, 2012Date of Patent: December 10, 2013Assignee: Kabushiki Kaisha ToshibaInventors: Katsuhiko Koui, Shuichi Murakami, Mariko Kitazaki, Yusuke Tomoda, Norihito Fujita
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Publication number: 20130314820Abstract: According to one embodiment, a magnetic recording head includes a main magnetic pole, an auxiliary magnetic pole, and a spin torque oscillator formed between them. The spin torque oscillator includes a main oscillation layer and spin sink layer as an oscillation layer. The spin sink layer contains one of iron and cobalt, and at least one element selected from the group consisting of platinum, palladium, ruthenium, tantalum, chromium, terbium, gadolinium, europium, dysprosium, and samarium.Type: ApplicationFiled: December 17, 2012Publication date: November 28, 2013Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Mariko SHIMIZU, Katsuhiko KOUI, Shuichi MURAKAMI, Masahiro TAKASHITA
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Publication number: 20130307889Abstract: There is provided an inkjet printing apparatus which can perform stable ejection also in successive printing at high speed even in a case of performing printing in use of a print head provided with an ejection opening surface having hydrophilic properties. The inkjet printing apparatus comprises an inkjet print head wherein the control unit controls the print head such that, in a case where the ejection number of the ink ejected from the print head after removing the ink on the ejection opening surface by the ink removal unit is equal to or more than a threshold, a drive energy amount that is supplied for the preliminary ejection operation is larger than a drive energy amount that is supplied for the preliminary ejection operation in a case where the ejection number is less than the threshold.Type: ApplicationFiled: May 14, 2013Publication date: November 21, 2013Applicant: CANON KABUSHIKI KAISHAInventors: Toshikazu Nagatsuka, Shuichi Murakami, Keiji Tomizawa, Atsushi Omura, Etsuko Sawada, Hiroaki Mihara, Yohei Hamade
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Patent number: 8547662Abstract: An example magnetic writing head includes a main magnetic pole, a coil to generate an ampere magnetic field to magnetize the main magnetic pole to cause the magnetized main magnetic pole to generate a magnetic field, and a laminated body. The laminated body includes a first magnetic layer having a coercivity lower than the magnetic field applied by the main magnetic pole and a second magnetic layer having a coercivity lower than the magnetic field applied by the main magnetic pole.Type: GrantFiled: July 3, 2012Date of Patent: October 1, 2013Assignee: Kabushiki Kaisha ToshibaInventors: Kenichiro Yamada, Hitoshi Iwasaki, Junichi Akiyama, Masayuki Takagishi, Tomomi Funayama, Masahiro Takashita, Mariko Shimizu, Shuichi Murakami, Tadashi Kai
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Patent number: 8517509Abstract: A liquid ejection head according to the present invention includes a plurality of ejection openings arranged in a first direction and a plurality of electro-thermal transducers for ejecting liquid from the ejection openings, the liquid ejection head and a printing medium being subjected to the relative movement, wherein an arrangement pitch of the ejection openings forming an end group located in the respective opposite end section along the first direction is longer than an arrangement pitch of the ejection openings forming a central group located in the central section along the first direction. According to the present invention, it is possible to eliminate white streaks which may generate in a solid printing.Type: GrantFiled: June 20, 2011Date of Patent: August 27, 2013Assignee: Canon Kabushiki KaishaInventors: Michinari Mizutani, Shuichi Murakami
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Patent number: 8507158Abstract: Provided is a pellicle that has appropriate membrane strength, high resistance to chemicals, and a low degree of sulfate ion generation and outgassing. A provided pellicle frame supports the outer rim of a pellicle membrane, and an epoxy resin coating is formed on the surface of the pellicle frame. In the infrared absorption spectrum of said epoxy resin coating, the ratio of the absorbance of a peak in the range between 1450 cm?1 and 1550 cm?1 to the absorbance of a peak in the range between 1200 cm?1 and 1275 cm?1 is at least 0.5 and at most 3; also, the ratio of the absorbance of a peak in the range between 1450 cm?1 and 1550 cm?1 to the absorbance of a peak in the range between 905 cm?1 and 930 cm?1 is at least 1 and less than 7.Type: GrantFiled: July 6, 2010Date of Patent: August 13, 2013Assignee: Mitsui Chemicals, Inc.Inventors: Shuichi Murakami, Takashi Kozeki