Patents by Inventor Kunio Sasamori
Kunio Sasamori 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: 11908611Abstract: A formed body incorporating a coil by using: a coil formed by winding a conductive wire, and a formed body incorporating the coil, the formed body being formed with a sealing material containing a resin and a magnetic material. The coil is formed by winding the conductive wire so that lead-out ends are positioned at an outer periphery of a wound portion. The formed body is formed so that surfaces of the coil are partially exposed on four side surfaces of the formed body which are parallel to a winding axis of the coil, and the area of a portion of the formed body outside the outer periphery of the wound portion is almost equal to or smaller than the area of a portion of the formed body inside an inner periphery of the wound portion of the coil.Type: GrantFiled: October 19, 2020Date of Patent: February 20, 2024Assignee: Murata Manufacturing Co., Ltd.Inventors: Yoshitoshi Shoda, Kozo Sato, Makoto Murakami, Kunio Sasamori, Naoto Takahashi
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Publication number: 20210035731Abstract: A formed body incorporating a coil by using: a coil formed by winding a conductive wire, and a formed body incorporating the coil, the formed body being formed with a sealing material containing a resin and a magnetic material. The coil is formed by winding the conductive wire so that lead-out ends are positioned at an outer periphery of a wound portion. The formed body is formed so that surfaces of the coil are partially exposed on four side surfaces of the formed body which are parallel to a winding axis of the coil, and the area of a portion of the formed body outside the outer periphery of the wound portion is almost equal to or smaller than the area of a portion of the formed body inside an inner periphery of the wound portion of the coil.Type: ApplicationFiled: October 19, 2020Publication date: February 4, 2021Applicant: Murata Manufacturing Co., Ltd.Inventors: Yoshitoshi SHODA, Kozo SATO, Makoto MURAKAMI, Kunio SASAMORI, Naoto TAKAHASHI
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Patent number: 10847309Abstract: A formed body incorporating a coil by using: a coil formed by winding a conductive wire, and a formed body incorporating the coil, the formed body being formed with a sealing material containing a resin and a magnetic material. The coil is formed by winding the conductive wire so that lead-out ends are positioned at an outer periphery of a wound portion. The formed body is formed so that surfaces of the coil are partially exposed on four side surfaces of the formed body which are parallel to a winding axis of the coil, and the area of a portion of the formed body outside the outer periphery of the wound portion is almost equal to or smaller than the area of a portion of the formed body inside an inner periphery of the wound portion of the coil.Type: GrantFiled: January 17, 2017Date of Patent: November 24, 2020Assignee: Murata Manufacturing Co., Ltd.Inventors: Yoshitoshi Shoda, Kozo Sato, Makoto Murakami, Kunio Sasamori, Naoto Takahashi
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Patent number: 10224144Abstract: A surface-mount inductor including: a coil formed by winding insulated wire and bringing out lead ends therefrom; and a plurality of premolded bodies for accommodating the coil inside, thereby thermopressing to form, wherein a pair of metal terminals is embedded laterally on the outer surface of the surface-mount inductor, and the lead ends of the coil are brought out from the bottom surface of the surface-mount inductor and laterally laid on the outer surface of the metal terminals, as well as a method for manufacturing the same.Type: GrantFiled: December 17, 2015Date of Patent: March 5, 2019Assignee: Murata Manufacturing Co., Ltd.Inventors: Ryota Watanabe, Takeo Ohaga, Hiroyasu Mori, Yasutaka Mizukoshi, Takumi Arai, Masaaki Totsuka, Kunio Sasamori
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Patent number: 9659705Abstract: A method of producing a surface-mount inductor including an external electrode having high fixing strength with respect to an element body even in a high-humidity environment. The method includes the steps of: winding an electrically-conductive wire to form a coil; forming a core using a sealant primarily containing a metal magnetic powder and a resin in such a manner as to encapsulate the coil in the sealant while allowing each of opposite ends of the coil to be at least partially exposed on a surface of the core; reducing smoothness of a surface of at least a part of a portion of the core on which an external electrode is formed as compared to a surface therearound; and forming the external electrode on the core in such a manner as to be electrically conducted with the coil.Type: GrantFiled: May 15, 2014Date of Patent: May 23, 2017Assignee: Murata Manufacturing Co., Ltd.Inventors: Keita Muneuchi, Masaaki Totsuka, Chitoshi Sakai, Kunio Sasamori
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Publication number: 20170125158Abstract: A formed body incorporating a coil by using: a coil formed by winding a conductive wire, and a formed body incorporating the coil, the formed body being formed with a sealing material containing a resin and a magnetic material. The coil is formed by winding the conductive wire so that lead-out ends are positioned at an outer periphery of a wound portion. The formed body is formed so that surfaces of the coil are partially exposed on four side surfaces of the formed body which are parallel to a winding axis of the coil, and the area of a portion of the formed body outside the outer periphery of the wound portion is almost equal to or smaller than the area of a portion of the formed body inside an inner periphery of the wound portion of the coil.Type: ApplicationFiled: January 17, 2017Publication date: May 4, 2017Applicant: Murata Manufacturing Co., Ltd.Inventors: Yoshitoshi SHODA, Kozo SATO, Makoto MURAKAMI, Kunio SASAMORI, Naoto TAKAHASHI
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Publication number: 20160181014Abstract: A surface-mount inductor including: a coil formed by winding insulated wire and bringing out lead ends therefrom; and a plurality of premolded bodies for accommodating the coil inside, thereby thermopressing to form, wherein a pair of metal terminals is embedded laterally on the outer surface of the surface-mount inductor, and the lead ends of the coil are brought out from the bottom surface of the surface-mount inductor and laterally laid on the outer surface of the metal terminals, as well as a method for manufacturing the same.Type: ApplicationFiled: December 17, 2015Publication date: June 23, 2016Inventors: Ryota WATANABE, Takeo OHAGA, Hiroyasu MORI, Yasutaka MIZUKOSHI, Takumi ARAI, Masaaki TOTSUKA, Kunio SASAMORI
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Patent number: 9305702Abstract: [Technical Problem] This invention provides a surface-mount inductor that is capable of positioning a coil in a predetermined position in a mold, thereby to position the coil in a predetermined position of a core and to prevent led-out ends from being buried in the core. [Solution to the Problem] A surface-mount inductor of the present invention comprises: a coil formed by winding a winding wire; and a core containing a magnetic powder and including the coil therein. The coil has opposite led-out ends, each of which is exposed on respective ones of opposed side surfaces of the core. Each of the led-out ends of the coil is connected to an external electrode formed on the core.Type: GrantFiled: August 30, 2013Date of Patent: April 5, 2016Assignee: TOKO, INC.Inventors: Kunio Sasamori, Masaaki Totsuka, Chitoshi Sakai, Naoto Takahashi, Hiroyasu Mori
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Publication number: 20140366365Abstract: Process for producing a surface-mount inductor. A forming die assembly comprises a lower die, a first upper die having three peripheral side surfaces and one opening, and a second upper die for closing the first upper die opening, thereby defining a cavity therein. The coil is formed by winding a wire and processing its led-out end such that it contacts with a side surface of the first and second upper dies. The coil is placed in the cavity from the open side of the first upper die such that its led-out end contacts with a side surface of the first and second upper dies. The coil is sealed with a sealant containing a magnetic powder while the first and second upper dies are clamped together, to form the core. An external electrode is formed on the core and the led-out end of the coil is connected to the external electrode.Type: ApplicationFiled: June 16, 2014Publication date: December 18, 2014Inventors: Kunio SASAMORI, Masaaki TOTSUKA, Chitoshi SAKAI, Naoto TAKAHASHI, Hiroyasu MORl
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Publication number: 20140338185Abstract: [Object] To provide a method of producing a surface-mount inductor which comprises an external electrode having high fixing strength with respect to an element body even in a high-humidity environment. [Means to Accomplish the Object] The method of producing a surface-mount inductor according to the present invention comprises the steps of: winding an electrically-conductive wire to form a coil; forming a core using a sealant primarily containing a metal magnetic powder and a resin in such a manner as to encapsulate the coil in the sealant while allowing each of opposite ends of the coil to be at least partially exposed on a surface of the core; reducing smoothness of a surface of at least a part of a portion of the core on which an external electrode is formed as compared to a surface therearound; and forming the external electrode on the core in such a manner as to be electrically conducted with the coil.Type: ApplicationFiled: May 15, 2014Publication date: November 20, 2014Applicant: TOKO, INC.Inventors: Keita MUNEUCHI, Masaaki TOTSUKA, Chitoshi SAKAI, Kunio SASAMORI
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Publication number: 20140285301Abstract: A surface mount inductor including a drum core having a pair of flanges at both ends of a winding shaft thereof, a winding formed by winding an insulation-coated wire around the winding shaft, and a pair of plate-like metal terminals arranged on a flange surface of the drum core and each having a protrusion part protruding from a perimeter of the flange, wherein terminals of the winding are tied around the protrusion parts, the protrusion parts are compressed in a vertical direction and formed to have a predetermined height-direction dimension, and tied parts are immersed in a solder bath to be subjected to connection processing.Type: ApplicationFiled: March 18, 2014Publication date: September 25, 2014Applicant: TOKO, INC.Inventors: Takumi ARAI, Takeo OHAGA, Yasutaka MIZUKOSHI, Masaaki TOTSUKA, Kunio SASAMORI
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Publication number: 20140062638Abstract: [Technical Problem] This invention provides a surface-mount inductor that is capable of positioning a coil in a predetermined position in a mold, thereby to position the coil in a predetermined position of a core and to prevent led-out ends from being buried in the core. [Solution to the Problem] A surface-mount inductor of the present invention comprises: a coil formed by winding a winding wire; and a core containing a magnetic powder and including the coil therein. The coil has opposite led-out ends, each of which is exposed on respective ones of opposed side surfaces of the core. Each of the led-out ends of the coil is connected to an external electrode formed on the core.Type: ApplicationFiled: August 30, 2013Publication date: March 6, 2014Applicant: TOKO, INC.Inventors: Kunio SASAMORI, Masaaki Totsuka, Chitoshi Sakai, Naoto Takahashi, Hiroyasu Mori
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Publication number: 20140062639Abstract: [TECHNICAL PROBLEM] Present invention provides a surface-mount inductor allowing the Q to be improved at a higher frequency and preventing the efficiency of the inductor from getting worse even at the higher frequency. [SOLUTION TO THE PROBLEM] A surface-mount inductor comprises: a coil formed by winding a conductive wire; and a core comprising mainly of a magnetic powder and a resin and containing the coil therein. The magnetic powder contains plural types of magnetic powders each having a different particle size from others, and the plural types of magnetic powders are mixed to satisfy the following relationship: ?an·?n?10 ?m, where an is a mixing ratio, ?n is an average particle size, and n is an integer of 2 or more.Type: ApplicationFiled: September 5, 2013Publication date: March 6, 2014Applicant: TOKO, INC.Inventors: Kunio Sasamori, Masaaki Totsuka, Yasuyuki Kawauchi, Keita Muneuchi, Hiroyasu Mori
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Publication number: 20140062640Abstract: [TECHNICAL PROBLEM] The present invention provides a surface-mount inductor allowing the Q to be improved at a higher frequency and preventing the efficiency of the inductor from getting worse even at the higher frequency. [SOLUTION TO THE PROBLEM] A surface-mount inductor comprises: a coil formed by winding a conductive wire; and a core containing the coil and formed by subjecting a mixture of a magnetic powder and a binder to powder-compacting. The magnetic powder contains plural types of magnetic powders each having a different particle size from the other, and the plural types of magnetic powders are mixed to satisfy the following relationship: ?an·?n?10 ?m, where an is a mixing ratio, ?n is an average particle size, and n is an integer of 2 or more.Type: ApplicationFiled: September 5, 2013Publication date: March 6, 2014Inventors: Kunio Sasamori, Masaaki Totsuka, Yasuyuki Kawauchi, Keita Muneuchi, Hiroyasu Mori
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Patent number: 8610526Abstract: Disclosed is a resin composition, which comprises a thermosetting resin contained therein in an amount of 40 volume % or more, and a wax contained therein in an amount of 5 to 30 volume %, wherein: the thermosetting resin exists in liquid form at room temperature; and the wax exists in powder form at room temperature and has a melting point of 70 to 150° C., and wherein the resin composition has a viscosity of 50000 to 150000 mPa·s as measured at room temperature.Type: GrantFiled: August 9, 2012Date of Patent: December 17, 2013Assignee: TOKO, Inc.Inventors: Koichi Saito, Yukio Nagashima, Kunio Sasamori
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Publication number: 20130307657Abstract: A surface mount inductor includes: a drum core including a spool having an upper collar and a lower collar; a coil wound around the drum core; and a ring core arranged on the drum core, wherein the metal terminals include first and second tongues projecting to an outer periphery of the lower collar, the ring core includes convex sections projecting to a lower surface from an edge, side surfaces of the first tongue and the second tongue sandwich side surfaces of the convex sections, and tip sections of the first tongue and the second tongue fix the ring core from below.Type: ApplicationFiled: May 8, 2013Publication date: November 21, 2013Inventors: Takeo OHAGA, Masaaki TOTSUKA, Kunio SASAMORI
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Publication number: 20130255071Abstract: A method of producing a surface-mount inductor having an external electrode with high connection reliability even in a high-humidity environment is provided. The method comprises the steps of: forming a coil by winding an electrically-conductive wire having a self-bonding coating; forming a core portion using a sealant comprising metal magnetic powders and a resin so as to encapsulate the coil while allowing each of opposite ends of the coil to be at least partially exposed on a surface of the core portion; applying an electrically-conductive paste containing metal fine particles having a sintering temperature of 250° C. or less onto the surface of the core portion; and forming an underlying electrode on the surface of the core portion by sintering the metal fine particles through a heat treatment of the core portion to achieve electrical conduction with the coil.Type: ApplicationFiled: April 1, 2013Publication date: October 3, 2013Inventors: Keita MUNEUCHI, Masaaki Totsuka, Kunio Sasamori
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Publication number: 20120299688Abstract: Disclosed is a resin composition, which comprises a thermosetting resin contained therein in an amount of 40 volume % or more, and a wax contained therein in an amount of 5 to 30 volume %, wherein: the thermosetting resin exists in liquid form at room temperature; and the wax exists in powder form at room temperature and has a melting point of 70 to 150° C., and wherein the resin composition has a viscosity of 50000 to 150000 mPa.s as measured at room temperature.Type: ApplicationFiled: August 9, 2012Publication date: November 29, 2012Applicant: TOKO, INC.Inventors: Koichi SAITO, Yukio Nagashima, Kunio Sasamori
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Patent number: D719509Type: GrantFiled: June 26, 2012Date of Patent: December 16, 2014Assignee: Toko, Inc.Inventors: Hiroshi Shishikura, Masaaki Totsuka, Kunio Sasamori
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Patent number: D741261Type: GrantFiled: July 21, 2014Date of Patent: October 20, 2015Assignee: Toko, Inc.Inventors: Hiroshi Shishikura, Masaaki Totsuka, Kunio Sasamori