Patents by Inventor Masato Sasaki
Masato Sasaki 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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Patent number: 8668789Abstract: A method for the manufacturing of high strength cold rolled steel sheets includes continuously annealing a cold rolled steel sheet that has a composition containing C: 0.05-0.3% mass, Si: 0.6-3.0% mass, Mn: 1.0-3.0% mass, P: ?0.1% mass, S: ?0.02% mass, Al: 0.01-1% mass, N: ?0.01% mass, and Fe and inevitable impurities: balance, in a manner such that the cold rolled steel sheet is heated in a furnace using an oxidizing burner to a steel sheet temperature of ?700° C., then soak-annealed in a reducing atmosphere furnace at 750-900° C., then cooled so the average cooling rate between 500° C. and 100° C. is ?50° C./s. High-Si cold rolled steel sheets with high strength and good phosphatability while containing Si?0.6% are obtained without controlling conditions so as to increase the dew point in the reducing atmosphere in the soaking furnace or to increase the vapor hydrogen partial pressure ratio.Type: GrantFiled: July 27, 2010Date of Patent: March 11, 2014Assignee: JFE Steel CorporationInventors: Junichiro Hirasawa, Naoto Yoshimi, Hiroki Nakamaru, Kohei Hasegawa, Hideyuki Tsurumaru, Keita Yonetsu, Hideyuki Takahashi, Masato Sasaki
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Patent number: 8667945Abstract: A piston for an internal combustion engine includes a piston base material including a pair of skirt portions opposed to each other in a radial direction of the piston base material. The piston includes a multiple-layer coating formed on at least one of surfaces of the pair of skirt portions. The piston further includes marks provided to respective layers of the multiple-layer coating at locations different from each other.Type: GrantFiled: June 23, 2011Date of Patent: March 11, 2014Assignee: Hitachi Automotive Systems, Ltd.Inventor: Masato Sasaki
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Publication number: 20130277005Abstract: An apparatus for producing a piston for an internal combustion engine by casting, the piston having a cooling channel therein, the apparatus including a fixed die with an upwardly opened cavity in which a core serving to form the cooling channel is to be disposed, a moveable die moveably disposed relative to the fixed die in a vertical direction and including a predetermined engaging portion, a guide die including an engaging portion engageable with the fixed die and having a same shape as that of the engaging portion of the moveable die, and a core retaining mechanism disposed in the guide die to retain the core in a predetermined position.Type: ApplicationFiled: March 11, 2013Publication date: October 24, 2013Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Masato SASAKI, Norikazu TAKAHASHI
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Patent number: 8480949Abstract: A gas-jet cooling apparatus for a continuous annealing furnace apparatus includes a plurality of tubular pressure headers extending in a width direction of a steel strip and having a length that is larger than a width of the steel strip, wherein the pressure headers are arranged to face each of front and back surfaces of the steel strip along a longitudinal direction of the steel strip at a pitch L; and a plurality of nozzles protruding from the pressure headers, wherein the nozzles are arranged along the width direction of the steel strip at a pitch W and arranged along the longitudinal direction of the steel strip in a staggered manner.Type: GrantFiled: October 27, 2010Date of Patent: July 9, 2013Assignee: JFE Steel CorporationInventors: Hirokazu Kobayashi, Gentarou Takeda, Hideyuki Takahashi, Masato Sasaki
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Publication number: 20120268090Abstract: A switching power supply device of the present invention switches an application of a voltage to a coil. The switching power supply device includes: a switching element that (i) has a normally-on type first switching element and a normally-off type second switching element which are cascode-connected to each other at and (ii) switches the application of the voltage to the coil; and a control circuit that (i) detects a voltage at a cascode connecting point and (ii) controls turning-on of the switching element in accordance with the detected voltage.Type: ApplicationFiled: April 17, 2012Publication date: October 25, 2012Inventor: Masato SASAKI
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Publication number: 20120222646Abstract: A piston for an internal combustion engine includes a piston base material and a film of lubrication coating composition. The coating composition has an inner coating layer formed on a surface of the piston base material and an outer coating layer formed on a surface of the inner coating layer. Each of the inner coating layer and the outer coating layer contains at least one of a polyamide-imide resin, a polyimide resin and an epoxy resin as a binder. The inner coating layer contains 0 to 50 wt % of at least one of graphite and molybdenum disulfide as a solid lubricant, whereas the outer coating layer contains 50 to 95 wt % of at least one of graphite and molybdenum disulfide as a solid lubricant.Type: ApplicationFiled: May 11, 2012Publication date: September 6, 2012Applicant: Hitachi Automotive Systems, Ltd.Inventor: Masato SASAKI
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Publication number: 20120205842Abstract: A gas jet cooling apparatus for a continuous annealing furnace apparatus includes a plurality of tubular pressure headers extending in a width direction of a steel strip and having a length that is larger than a width of the steel strip, wherein the pressure headers are arranged to face each of front and back surfaces of the steel strip along a longitudinal direction of the steel strip at a pitch L; and a plurality of nozzles protruding from the pressure headers, wherein the nozzles are arranged along the width direction of the steel strip at a pitch W and arranged along the longitudinal direction of the steel strip in a staggered manner.Type: ApplicationFiled: October 27, 2010Publication date: August 16, 2012Applicant: JFE STEEL CORPORATIONInventors: Hirokazu Kobayashi, Gentarou Takeda, Hideyuki Takahashi, Masato Sasaki
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Publication number: 20120208043Abstract: There is provided a galvanized steel sheet that has various properties such as corrosion resistance and adhesion and allows for high conductivity at a low contact pressure. A first layer film is formed by applying a surface treatment solution having a pH of 8 to 10 onto the surface of the galvanized steel sheet and drying the surface treatment solution by heating, the surface treatment solution containing a water-soluble zirconium compound, a tetraalkoxysilane, an epoxy group-containing compound, a chelating agent, a silane coupling agent, vanadic acid, and a metal compound in a specific ratio. Subsequently, a second layer film is formed by applying a surface treatment solution containing an organic resin onto the surface of the first layer film and drying the surface treatment solution by heating.Type: ApplicationFiled: October 22, 2010Publication date: August 16, 2012Applicant: JFE STEEL CORPORATIONInventors: Takeshi Matsuda, Akira Matsuzaki, Masato Sasaki, Katsutoshi Takashima, Satoru Ando
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Publication number: 20120186707Abstract: A method for the manufacturing of high strength cold rolled steel sheets includes continuously annealing a cold rolled steel sheet that has a composition containing C: 0.05-0.3% mass, Si: 0.6-3.0% mass, Mn: 1.0-3.0% mass, P: 0.1% mass, S: ?0.02% mass, Al: 0.01-1% mass, N: ?0.01% mass, and Fe and inevitable impurities: balance, in a manner such that the cold rolled steel sheet is heated in a furnace using an oxidizing burner to a steel sheet temperature of ?700° C., then soak-annealed in a reducing atmosphere furnace at 750-900° C., then cooled so the average cooling rate between 500° C. and 100° C. is ?50° C./s. High-Si cold rolled steel sheets with high strength and good phosphatability while containing Si?0.6% are obtained without controlling conditions so as to increase the dew point in the reducing atmosphere in the soaking furnace or to increase the vapor hydrogen partial pressure ratio.Type: ApplicationFiled: July 27, 2010Publication date: July 26, 2012Applicant: JFE STEEL CORPORATIONInventors: Junichiro Hirasawa, Naoto Yoshimi, Hiroki Nakamaru, Kohei Hasegawa, Hideyuki Tsurumaru, Keita Yonetsu, Hideyuki Takahashi, Masato Sasaki
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Patent number: 8220433Abstract: A piston for an internal combustion engine includes a piston base material and a film of lubrication coating composition. The coating composition has an inner coating layer formed on a surface of the piston base material and an outer coating layer formed on a surface of the inner coating layer. Each of the inner coating layer and the outer coating layer contains at least one of a polyamide-imide resin, a polyimide resin and an epoxy resin as a binder. The inner coating layer contains 0 to 50 wt % of at least one of graphite and molybdenum disulfide as a solid lubricant, whereas the outer coating layer contains 50 to 95 wt % of at least one of graphite and molybdenum disulfide as a solid lubricant.Type: GrantFiled: March 16, 2010Date of Patent: July 17, 2012Assignee: Hitachi Automotive Systems, Ltd.Inventor: Masato Sasaki
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Publication number: 20120160206Abstract: A piston of an internal combustion engine, having a crown section. A wear-resistant ring is formed in the crown section to be used for forming a piston ring groove. The wear-resistant ring includes a porous formed body formed of a first material higher in hardness and larger in specific gravity than a base material of the piston, and a second material infiltrated in pores of the porous formed body and containing 20 weight % or more of magnesium.Type: ApplicationFiled: December 27, 2011Publication date: June 28, 2012Applicant: Hitachi Automotive Systems, Ltd.Inventors: Norikazu Takahashi, Masato Sasaki, Takanori Sato
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Publication number: 20120088122Abstract: A galvanized steel sheet includes a surface-treatment film with 50 to 1200 mg/m2, wherein the surface-treatment film is obtained by applying a surface-treatment agent to a surface of a galvanized steel sheet and drying the surface-treatment agent by heating; and the surface-treatment agent is prepared as a mixture having a pH of 8 to 10 and containing, with specific proportions, a water-soluble zirconium compound, a tetraalkoxysilane, an epoxy-group-containing compound, a chelating agent, a silane coupling agent, vanadic acid, and a metal compound.Type: ApplicationFiled: March 31, 2010Publication date: April 12, 2012Applicant: JFE STEEL CORPORATIONInventors: Takeshi Matsuda, Akira Matsuzaki, Masato Sasaki, Katsutoshi Takashima
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Publication number: 20120075889Abstract: A switching power supply device includes: a fundamental wave component extraction circuit for extracting a fundamental wave component of a voltage induced across a first winding; an oscillator for generating a clock signal having an oscillation frequency that changes according to a change in the fundamental wave component; and a control circuit for (i) generating a control signal for controlling a switching element to be in an ON state or OFF state, the switching signal having a duty that changes according to a change in the oscillation frequency of the clock signal or a change in a voltage of a smoothing capacitor and (ii) supplying the control signal to a gate of the switching element.Type: ApplicationFiled: June 16, 2011Publication date: March 29, 2012Inventor: Masato SASAKI
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Publication number: 20110315111Abstract: A piston for an internal combustion engine includes a piston base material including a pair of skirt portions opposed to each other in a radial direction of the piston base material. The piston includes a multiple-layer coating formed on at least one of surfaces of the pair of skirt portions. The piston further includes marks provided to respective layers of the multiple-layer coating at locations different from each other.Type: ApplicationFiled: June 23, 2011Publication date: December 29, 2011Applicant: Hitachi Automotive Systems, Ltd.Inventor: Masato Sasaki
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Patent number: 8048237Abstract: An ultra soft high carbon hot-rolled steel sheet has excellent workability. The steel sheet is a high carbon hot-rolled steel sheet containing 0.2 to 0.7% C, and has a structure in which mean grain size of ferrite is 20 ?m or larger, the volume percentage of ferrite grains having 10 ?m or smaller size is 20% or less, mean diameter of carbide is in a range from 0.10 ?m to smaller than 2.0 ?m, the percentage of carbide grains having 5 or more of aspect ratio is 15% or less, and the contact ratio of carbide is 20% or less.Type: GrantFiled: February 26, 2007Date of Patent: November 1, 2011Assignee: JFE Steel CorporationInventors: Hideyuki Kimura, Takeshi Fujita, Nobuyuki Nakamura, Naoya Aoki, Masato Sasaki, Satoshi Ueoka, Shunji Iizuka
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Publication number: 20100282376Abstract: An ultra soft high carbon hot-rolled steel sheet has excellent workability. The steel sheet is a high carbon hot-rolled steel sheet containing 0.2 to 0.7% C, and has a structure in which mean grain size of ferrite is 20 ?m or larger, the volume percentage of ferrite grains having 10 ?m or smaller size is 20% or less, mean diameter of carbide is in a range from 0.10 ?m to smaller than 2.0 ?m, the percentage of carbide grains having 5 or more of aspect ratio is 15% or less, and the contact ratio of carbide is 20% or less.Type: ApplicationFiled: February 26, 2007Publication date: November 11, 2010Applicant: JFE STEEL CORPORATION, A CORPORATION OF JAPANInventors: Hideyuki Kimura, Takeshi Fujita, Nobuyuki Nakamura, Naoya Aoki, Masato Sasaki, Satoshi Ueoka, Shunji Iizuka
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Publication number: 20100236516Abstract: A piston for an internal combustion engine includes a piston base material and a film of lubrication coating composition. The coating composition has an inner coating layer formed on a surface of the piston base material and an outer coating layer formed on a surface of the inner coating layer. Each of the inner coating layer and the outer coating layer contains at least one of a polyamide-imide resin, a polyimide resin and an epoxy resin as a binder. The inner coating layer contains 0 to 50 wt % of at least one of graphite and molybdenum disulfide as a solid lubricant, whereas the outer coating layer contains 50 to 95 wt % of at least one of graphite and molybdenum disulfide as a solid lubricant.Type: ApplicationFiled: March 16, 2010Publication date: September 23, 2010Applicant: Hitachi Automotive Systems, Ltd.Inventor: Masato SASAKI
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Patent number: 7784301Abstract: Frozen products requiring cold insulation are housed inside of the cold-insulating container structured of a vacuum heat-insulating material, and the cold-insulating containers are loaded in a refrigerator vehicle, cold-insulating vehicle, or room-temperature vehicle other than a freezer vehicle for delivery. Each of the peripheral walls, lids, and bottom faces of this container is made of a sheet material enveloping the vacuum heat-insulating material therein. In each of the peripheral walls adjacent to the peripheral walls connected to the lids, the vacuum heat-insulating material is divided along folding line so as to be foldable.Type: GrantFiled: January 28, 2005Date of Patent: August 31, 2010Assignee: Panasonic CorporationInventors: Masato Sasaki, Takao Sato, Haruyuki Ishio
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Patent number: 7779661Abstract: A cooling apparatus for a hot rolled steel strip including a top surface cooling means provided above a hot rolled steel strip which is transferred with transfer rollers; and a bottom surface cooling means provided below the hot rolled steel strip, each of the top surface cooling means and the bottom surface cooling means including a protective member having at least one cooling water passage hole; at least one cooling water header opposing the hot rolled steel strip separated by the protective member; and cooling water jetting nozzles protruding from the cooling water header, wherein the tips of the cooling water jetting nozzles are disposed farther from the hot rolled steel strip than the surface, opposing the hot rolled steel strip, of the protective member.Type: GrantFiled: February 25, 2009Date of Patent: August 24, 2010Assignee: JFE Steel CorporationInventors: Akio Fujibayashi, Masato Sasaki, Yoshimichi Hino, Atsushi Watanabei
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Publication number: 20090211670Abstract: A cooling apparatus for a hot rolled steel strip including a top surface cooling means provided above a hot rolled steel strip which is transferred with transfer rollers; and a bottom surface cooling means provided below the hot rolled steel strip, each of the top surface cooling means and the bottom surface cooling means including a protective member having at least one cooling water passage hole; at least one cooling water header opposing the hot rolled steel strip separated by the protective member; and cooling water jetting nozzles protruding from the cooling water header, wherein the tips of the cooling water jetting nozzles are disposed farther from the hot rolled steel strip than the surface, opposing the hot rolled steel strip, of the protective member.Type: ApplicationFiled: February 25, 2009Publication date: August 27, 2009Applicant: JFE STEEL CORPORATIONInventors: Akio Fujibayashi, Masato Sasaki, Yoshimichi Hino, Atsushi Watanabe