Patents by Inventor Yasushi Sakai
Yasushi Sakai 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: 20050123807Abstract: A method of manufacturing a magnetic recording media includes a magnetic recording layer of a granular magnetic layer that has ferromagnetic crystal grains and an oxide nonmagnetic grain boundary or a nitride nonmagnetic grain boundary surrounding the ferromagnetic crystal grains. It further has an overcoating layer on the granular magnetic recording layer. The overcoating layer contains a nonmagnetic metal or a nonmagnetic alloy that can be diffused into the nonmagnetic grain boundary. The atoms coated on the granular magnetic recording layer diffuse into the nonmagnetic grain boundary even without being annealed, and promote to isolate the ferromagnetic crystal grains from each other. The overcoating can be removed after its formation to reduce the magnetic gap between the magnetic recording layer and the magnetic recording head.Type: ApplicationFiled: January 18, 2005Publication date: June 9, 2005Applicant: Fuji Electric Holdings Co., Ltd.Inventors: Sadayuki Watanabe, Yasushi Sakai
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Patent number: 6863951Abstract: Disclosed is a film key sheet with a key top protruding from a resin film which allows a further reduction in thickness and provides a sufficient degree of clarity in visually recognizing a display portion thereof, and a method for manufacturing such a film key sheet. The film key sheet has a film removal hole piercing through the resin film, with a hole edge portion raised from the surface of the resin film being secured to the side surface of the key top. Thus, no resin film exists on the upper and bottom surfaces of the key top, so that it is possible to achieve a further reduction in thickness independently of the foldability of the resin film and drawing accuracy and to provide clarity in visual recognition of a display portion at the bottom of the key top.Type: GrantFiled: July 25, 2003Date of Patent: March 8, 2005Assignee: Polymatech Co., Ltd.Inventor: Yasushi Sakai
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Patent number: 6858320Abstract: A performance of a perpendicular magnetic recording medium, such as an increase in output or a decrease in noise, is improved by providing a good orientation of a magnetic recording layer in the perpendicular magnetic recording medium and by reducing an amount of an initial growth layer in the magnetic recording layer. The perpendicular magnetic recording medium includes an under layer, a magnetic recording layer, a protective film, and a liquid lubrication layer, which are sequentially provided on a non-magnetic substrate. The under layer contains non-magnetic NiFeCr or a permalloy-based soft magnetic material.Type: GrantFiled: May 24, 2002Date of Patent: February 22, 2005Assignee: Fuji Electric Co., Ltd.Inventors: Shunji Takenoiri, Yasushi Sakai
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Publication number: 20050037238Abstract: The present invention provides a method for easily obtaining a perpendicular magnetic recording medium having the desired magnetic properties by sputtering, and a magnetic recording medium obtained by this method. The perpendicular magnetic recording medium of the present invention is a perpendicular magnetic recording medium comprising at least a soft magnetic underlayer, an underlayer, a magnetic recording layer, a protective layer, and a liquid lubricant layer sequentially laminated on a nonmagnetic substrate, wherein the magnetic recording layer is a rare earth-transition metal alloy amorphous film formed by sputtering, and the formation of the magnetic recording layer by sputtering is performed using a film-forming gas incorporating 2% or more, but 60% or less of an H2 gas. The present invention also discloses a method for producing the perpendicular magnetic recording medium.Type: ApplicationFiled: September 7, 2004Publication date: February 17, 2005Applicants: Fuji Electric Co., Ltd., Nippon Hoso KyokaiInventors: Yasushi Sakai, Akihiro Ohtsuki, Keiji Ohkubo, Kazuo Enomoto, Sadayuki Watanabe, Takahiko Tamaki, Kiyoshi Kuga, Eiichi Miyashita, Ryo Taguchi
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Publication number: 20050014029Abstract: A perpendicular magnetic recording medium is disclosed that is characterized by a lowered noise component and improved thermal stability. The method for making the recording medium includes the serial steps of forming a soft magnetic back-lining layer on a non-magnetic substrate, forming an intermediate layer on the soft magnetic back-lining layer, forming a magnetic recording layer on the intermediate layer, and forming a protective film and then a liquid lubricating layer on the magnetic recording layer. Thermal treatment is executed after the formation of the magnetic recording layer and before the formation of the protective film, or after the formation of the protective film and before the formation of the liquid lubricating layer. The thermal-processing steps are is executed in a vacuum higher than about 0.1 Pa and in a thermal environment within a range from about 200° C. to about 250° C. for a period of less than about 60 seconds.Type: ApplicationFiled: May 20, 2004Publication date: January 20, 2005Inventors: Shunji Takenoiri, Yasushi Sakai
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Publication number: 20040265426Abstract: According to the process, miso where a lipid metabolism improving action, particularly, a cholesterol lowering action, is potentiated is obtained. There is provided a process for producing miso comprising subjecting a prepared mixture of materials for miso to aging followed by a heating treatment preferably at 70 to 95° C. (substance temperature) for 3 to 40 minutes and then adding thereto phospholipid so as to make its content based on 100 parts by weight of the resulting dried miso 0.4 to 2.0 part(s) by weight.Type: ApplicationFiled: June 14, 2004Publication date: December 30, 2004Applicants: KYOWA HAKKO KOGYO CO., LTD., MARUKOME CO., LTDInventors: Yasushi Sakai, Ayako Muromachi, Miho Takada, Mika Hashimoto, Takahiro Hara, Noriyoshi Ichijo, Takehiro Nishida
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Publication number: 20040234819Abstract: A substrate for a perpendicular magnetic recording medium has a soft magnetic underlayer that functions as a soft magnetic backing layer of a perpendicular magnetic recording medium. The substrate for a perpendicular magnetic recording medium has a nonmagnetic base made of Al—Mg alloy or the like. The soft magnetic underlayer is formed of a Ni—P alloy containing phosphorus in a range of 0.5 wt % to 6 wt % formed by electroless plating on the nonmagnetic base. The substrate can also include a nonmagnetic underlayer formed by electroless plating on the base before electroless plating the soft magnetic underlayer. To form the perpendicular magnetic recording medium, the surface of the soft magnetic is textured using free abrasive grains. Thereafter, a nonmagnetic seed layer, a magnetic recording layer, and a protective layer can be formed by sputtering. A soft magnetic supplemental layer also can be formed on the soft magnetic underlayer before forming the seed layer.Type: ApplicationFiled: February 4, 2004Publication date: November 25, 2004Inventors: Hiroyuki Uwazumi, Yasushi Sakai, Mitsuo Masuda, Norihiko Nakajima
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Publication number: 20040191473Abstract: Disclosed is a film key sheet with a key top protruding from a resin film which allows a further reduction in thickness and provides a sufficient degree of clarity in visually recognizing a display portion thereof, and a method for manufacturing such a film key sheet. The film key sheet has a film removal hole piercing through the resin film, with a hole edge portion raised from the surface of the resin film being secured to the side surface of the key top. Thus, no resin film exists on the upper and bottom surfaces of the key top, so that it is possible to achieve a further reduction in thickness independently of the foldability of the resin film and drawing accuracy and to provide clarity in visual recognition of a display portion at the bottom of the key top.Type: ApplicationFiled: July 25, 2003Publication date: September 30, 2004Inventor: Yasushi Sakai
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Patent number: 6794028Abstract: A perpendicular magnetic recording medium has a granular magnetic layer and a nonmagnetic underlayer of a metal or an alloy having a hexagonal closest-packed (hcp) crystal structure. A seed layer of a metal or an alloy of a face-centered cubic (fcc) crystal structure is provided under the nonmagnetic underlayer. Such a perpendicular magnetic recording medium exhibits excellent magnetic characteristics even when the thickness of the underlayer or the total thickness of the underlayer and the seed layer is very thin. Excellent magnetic characteristics can be obtained even when of the substrate is not preheated. Accordingly, a nonmagnetic substrate, such as a plastic resin can be employed to reduce the manufacturing cost.Type: GrantFiled: August 23, 2002Date of Patent: September 21, 2004Assignee: Fuji Electric Co., Ltd.Inventors: Hiroyuki Uwazumi, Yasushi Sakai, Tadaaki Oikawa, Miyabi Nakamura
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Patent number: 6787252Abstract: A perpendicular magnetic recording medium without shift or loss of written signals even in a case of a high recording density in a rare earth-transition metal alloy amorphous film, and where productivity is excellent. The perpendicular magnetic recording medium includes a soft magnetic under layer, an intermediate layer, a magnetic recording layer including a rare earth-transition metal alloy amorphous film and at least one of Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, B, Al, C and Si or a boride or carbide uniformly dispersed in the rare earth-transition metal alloy amorphous film, a protective layer, a liquid lubricant layer, and a nonmagnetic substrate. The soft magnetic under layer, the intermediate layer, the magnetic recording layer, and the protective layer are built up in a predetermined order on the nonmagnetic substrate.Type: GrantFiled: August 26, 2002Date of Patent: September 7, 2004Assignee: Fuji Electric Co., Ltd.Inventors: Yasushi Sakai, Sadayuki Watanabe
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Patent number: 6784419Abstract: The present invention provides a flame-retardant electromagnetic wave absorber that exhibits excellent formability and electromagnetic wave-absorbing properties, and can be easily assembled and constructed. The electromagnetic wave absorber comprises a wave-absorbing body and a base plate supporting the bottom thereof, wherein the wave-absorbing body is formed in a pyramid shape by fitting polygonal wave-absorbing plates into each other.Type: GrantFiled: October 26, 2000Date of Patent: August 31, 2004Assignee: Kabushiki Kaisha RikenInventors: Toshikatsu Hayashi, Yasushi Sakai
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Publication number: 20040161524Abstract: The present invention relates to a method for producing a liquid plant extract containing plant powder, which comprises concentrating a liquid extract containing an active ingredient in the presence of the plant powder, the liquid extract being obtained from a plant containing the active ingredient; a process for producing a plant extract containing plant powder, which is characterized by comprises concentrating and drying a liquid extract containing an active ingredient in the presence of the plant powder, the liquid extract being obtained from a plant containing the active ingredient; a liquid plant extract or plant extract containing plant powder which comprises a liquid extract or plant extract containing the active ingredient obtained from a plant containing the active ingredient and comprises plant powder, and in which the content of the active ingredient in the liquid extract or plant extract is higher than that in the plant; and a food and drink or feed to which the liquid plant extract or plant extraType: ApplicationFiled: December 19, 2003Publication date: August 19, 2004Inventors: Yasushi Sakai, Yoshiharu Yokoo
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Publication number: 20040157088Abstract: A perpendicular magnetic recording media and method of manufacturing therefore includes a nonmagnetic substrate, an underlayer deposited on the nonmagnetic substrate, and a magnetic recording layer formed on the underlayer, quickly heated, and quenched. A protective layer is deposited on the magnetic recording layer, and a liquid lubricant layer is deposited on the protective layer, to improve an uniaxial anisotropy Ku and a coercive force Hc of the magnetic recording layer.Type: ApplicationFiled: February 3, 2004Publication date: August 12, 2004Applicant: Fuji Electric Co., Ltd.Inventors: Shunji Takenoiri, Yasushi Sakai
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Publication number: 20040157034Abstract: A perpendicular magnetic recording suitable for mass production and having suppressed spike noise has at least a seed layer, an orientation controlling layer, an antiferromagnetic layer, a soft magnetic layer, a magnetic recording layer, a protective layer, and a liquid lubricant layer formed on a nonmagnetic substrate. The orientation controlling layer is composed of a material comprising at least Ni and Fe, and having at least one element selected from the group consisting of B, Nb, and Si. The seed layer is composed of Ta. Further, after depositing the antiferromagnetic layer and the soft magnetic layer, but before depositing the magnetic recording layer, the substrate is heated to a blocking temperature or higher, and thereafter cooled to the blocking temperature or below while applying a static magnetic field in a radial direction of the substrate.Type: ApplicationFiled: November 26, 2003Publication date: August 12, 2004Inventors: Sadayuki Watanabe, Yasushi Sakai
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Patent number: 6764721Abstract: A perpendicular magnetic recording medium is formed of a soft magnetic layer, an anti-ferromagnetic layer, a magnetic recording layer, a protective layer, and a liquid lubricant layer deposited in that order on a non-magnetic substrate. The anti-ferromagnetic layer is a Mn alloy containing at least Co at 10 atomic % or greater and 50 atomic % or less or a Mn alloy containing at least Ir at 10 atomic % or greater and 30 atomic % or less. A radial magnetic field is applied during formation of the anti-ferromagnetic layer and the soft magnetic layer. Exchange coupling with the anti-ferromagnetic layer controls magnetic domain walls of the soft magnetic layer. The need for heat treatment after film formation is eliminated.Type: GrantFiled: October 20, 2003Date of Patent: July 20, 2004Assignee: Fuji Electric Co., Ltd.Inventors: Hiroyuki Uwazumi, Yasushi Sakai, Toyoji Ataka
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Publication number: 20040137278Abstract: A perpendicular magnetic recording medium, which suppresses generation of spike noises, has a soft magnetic backing layer constructed of a laminated structure. The backing layer has at least one nonmagnetic metal layer at most 5 nm thick and at least two soft magnetic layers each at least 10 nm thick being alternately laminated, with the top layer and the bottom layer being the soft magnetic layers. The nonmagnetic metal layer is composed of a metal selected from Cu, Ru, Rh, Pd, Re, Os, Ir, Pt, and Au, or an alloy of these metals. The directions of magnetization in the two soft magnetic layers sandwiching the nonmagnetic metal layer are parallel to the plane of the soft magnetic layer and different from each other by 180 degrees, and the two soft magnetic layers are antiferromagnetically coupled. This structure prevents formation of magnetic domain walls when an external magnetic field is applied, thus suppressing spike noises.Type: ApplicationFiled: August 11, 2003Publication date: July 15, 2004Applicant: Fuji Electric Co., Ltd.Inventors: Hiroyuki Uwazumi, Yasushi Sakai, Shunji Takenoiri
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Publication number: 20040122085Abstract: A liver function protecting or improving agent which comprises a compound represented by the formula (I) 1Type: ApplicationFiled: October 3, 2003Publication date: June 24, 2004Inventors: Yasushi Sakai, Shun Kayahashi, Erika Hashizume, Ryusuke Nakagiri
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Patent number: 6736506Abstract: This is an eyeglasses made-to-order system wherein an operator determines eyeglass specifications necessary for ordering eyeglasses, including necessary items relating to each structural member of the eyeglasses, with an interactive system using means including a computer-controlled display screen; wherein any of a plurality of types of basic frame designs prepared in advance is selected from the abovementioned display screen; and the optimum eyeglass specifications reflecting the consumer's preferences can be determined on and ordered from the display screen by arbitrary changes to the structural members of the eyeglasses, including frame type, lens shape, and parts, based on the selected basic frame design. Accordingly, eyeglasses with a design which are more reflective of the eyeglass consumer's preferences can be determined and ordered quickly using only the procedures deemed necessary by the operator.Type: GrantFiled: December 27, 2002Date of Patent: May 18, 2004Assignee: Hoya CorporationInventors: Yukihiro Izumitani, Toshihisa Akaba, Isao Iizuka, Yasushi Sakai, Shigeru Watanabe
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Patent number: 6732262Abstract: An IEEE 1394 protocol controller includes a data transfer determination circuit which determines whether communication is being performed over the network. A reset control circuit connected to the determination circuit detects the connection of a new node to the network (e.g., hot plugging) and reconfigures the network to include the new node subsequent to the completion of the data transfer based on the determination result of the determination circuit.Type: GrantFiled: April 18, 2000Date of Patent: May 4, 2004Assignee: Fujitsu LimitedInventor: Yasushi Sakai
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Publication number: 20040072037Abstract: A perpendicular magnetic recording medium is formed of a soft magnetic layer, an anti-ferromagnetic layer, a magnetic recording layer, a protective layer, and a liquid lubricant layer deposited in that order on a non-magnetic substrate. The anti-ferromagnetic layer is a Mn alloy containing at least Co at 10 atomic % or greater and 50 atomic % or less or a Mn alloy containing at least Ir at 10 atomic % or greater and 30 atomic % or less. A radial magnetic field is applied during formation of the anti-ferromagnetic layer and the soft magnetic layer. Exchange coupling with the anti-ferromagnetic layer controls magnetic domain walls of the soft magnetic layer. The need for heat treatment after film formation is eliminated.Type: ApplicationFiled: October 20, 2003Publication date: April 15, 2004Applicant: FUJI ELECTRIC CO., LTD.Inventors: Hiroyuki Uwazumi, Yasushi Sakai, Toyoji Ataka