Patents by Inventor Keiichi Higuchi
Keiichi Higuchi 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: 11189534Abstract: A semiconductor assembly is provided, that includes a semiconductor chip including an upper surface electrode and a lower surface electrode opposite to the upper surface electrode, a metallic wiring plate electrically connected to the semiconductor chip, and a soldering portion that bonds the upper surface electrode of the semiconductor chip to the metallic wiring plate by soldering, the semiconductor chip including a temperature detection portion, an anode wire for the temperature detection portion, and a first insulation layer that blocks the soldering portion and insulates the soldering portion from the anode wire.Type: GrantFiled: January 26, 2020Date of Patent: November 30, 2021Assignee: FUJI ELECTRIC CO., LTD.Inventor: Keiichi Higuchi
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Publication number: 20200303267Abstract: A semiconductor assembly is provided, that includes a semiconductor chip including an upper surface electrode and a lower surface electrode opposite to the upper surface electrode, a metallic wiring plate electrically connected to the semiconductor chip, and a soldering portion that bonds the upper surface electrode of the semiconductor chip to the metallic wiring plate by soldering, the semiconductor chip including a temperature detection portion, an anode wire for the temperature detection portion, and a first insulation layer that blocks the soldering portion and insulates the soldering portion from the anode wire.Type: ApplicationFiled: January 26, 2020Publication date: September 24, 2020Inventor: Keiichi HIGUCHI
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Patent number: 10784214Abstract: A semiconductor module includes: a first lead frame connected to a plurality of semiconductor chips in a first arm circuit; a second lead frame connected to a plurality of semiconductor chips in a second arm circuit; a first main terminal connected to the first lead frame; and a second main terminal connected to the second lead frame, wherein each of the first lead frame and second lead frame has a facing part, a first terminal connection portion connected to the first main terminal is provided at a first end portion of the first lead frame, a second terminal connection portion connected to the second main terminal is provided at a second end portion of the second lead frame, and the first terminal connection portion and second terminal connection portion are arranged on opposite sides when viewed from the facing parts of the first lead frame and second lead frame.Type: GrantFiled: January 29, 2019Date of Patent: September 22, 2020Assignee: FUJI ELECTRIC CO., LTD.Inventors: Shin Soyano, Hayato Nakano, Keiichi Higuchi, Akihiro Osawa
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Patent number: 10741550Abstract: A reverse-conducting semiconductor device includes a semiconductor chip having a top surface, a first side and a second side orthogonal to the first side in a plan view, in which a plurality of transistor regions and a plurality of diode regions are alternately arranged and an upper-electrode is provided on top surface-sides of the transistor regions and the diode regions; and a wiring member having a flat-plate portion having a rectangular-shape which is metallurgically jointed to the upper-electrode via a joint member above the diode regions. The wiring member has a conductive wall rising from a bending edge of the flat-plate portion in a direction opposite to the upper-electrode, and the bending edge of the flat-plate portion is arranged parallel to the first side.Type: GrantFiled: March 22, 2019Date of Patent: August 11, 2020Assignee: FUJI ELECTRIC CO., LTD.Inventors: Hayato Nakano, Keiichi Higuchi, Akihiro Osawa
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Publication number: 20190355718Abstract: A reverse-conducting semiconductor device includes a semiconductor chip having a top surface, a first side and a second side orthogonal to the first side in a plan view, in which a plurality of transistor regions and a plurality of diode regions are alternately arranged and an upper-electrode is provided on top surface-sides of the transistor regions and the diode regions; and a wiring member having a flat-plate portion having a rectangular-shape which is metallurgically jointed to the upper-electrode via a joint member above the diode regions. The wiring member has a conductive wall rising from a bending edge of the flat-plate portion in a direction opposite to the upper-electrode, and the bending edge of the flat-plate portion is arranged parallel to the first side.Type: ApplicationFiled: March 22, 2019Publication date: November 21, 2019Applicant: FUJI ELECTRIC CO., LTD.Inventors: Hayato Nakano, Keiichi Higuchi, Akihiro Osawa
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Publication number: 20190157221Abstract: A semiconductor module includes: a first lead frame connected to a plurality of semiconductor chips in a first arm circuit; a second lead frame connected to a plurality of semiconductor chips in a second arm circuit; a first main terminal connected to the first lead frame; and a second main terminal connected to the second lead frame, wherein each of the first lead frame and second lead frame has a facing part, a first terminal connection portion connected to the first main terminal is provided at a first end portion of the first lead frame, a second terminal connection portion connected to the second main terminal is provided at a second end portion of the second lead frame, and the first terminal connection portion and second terminal connection portion are arranged on opposite sides when viewed from the facing parts of the first lead frame and second lead frame.Type: ApplicationFiled: January 29, 2019Publication date: May 23, 2019Inventors: Shin SOYANO, Hayato NAKANO, Keiichi HIGUCHI, Akihiro OSAWA
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Patent number: 8933557Abstract: A semiconductor module including a cooling unit by which a fine cooling effect is obtained is provided. A plurality of cooling flow paths (21c) which communicate with both of a refrigerant introduction flow path which extends from a refrigerant introduction inlet and a refrigerant discharge flow path which extends to a refrigerant discharge outlet are arranged in parallel with one another in a cooling unit (20). Fins (22) are arranged in each cooling flow path (21c). Semiconductor elements (32) and (33) are arranged over the cooling unit (20) so that the semiconductor elements (32) and (33) are thermally connected to the fins (22). By doing so, a semiconductor module (10) is formed. Heat generated by the semiconductor elements (32) and (33) is conducted to the fins (22) arranged in each cooling flow path (21c) and is removed by a refrigerant which flows along each cooling flow path (21c).Type: GrantFiled: July 28, 2010Date of Patent: January 13, 2015Assignee: Fuji Electric Co., Ltd.Inventors: Hiromichi Gohara, Akira Morozumi, Keiichi Higuchi
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Publication number: 20120139096Abstract: A semiconductor module including a cooling unit by which a fine cooling effect is obtained is provided. A plurality of cooling flow paths (21c) which communicate with both of a refrigerant introduction flow path which extends from a refrigerant introduction inlet and a refrigerant discharge flow path which extends to a refrigerant discharge outlet are arranged in parallel with one another in a cooling unit (20). Fins (22) are arranged in each cooling flow path (21c). Semiconductor elements (32) and (33) are arranged over the cooling unit (20) so that the semiconductor elements (32) and (33) are thermally connected to the fins (22). By doing so, a semiconductor module (10) is formed. Heat generated by the semiconductor elements (32) and (33) is conducted to the fins (22) arranged in each cooling flow path (21c) and is removed by a refrigerant which flows along each cooling flow path (21c).Type: ApplicationFiled: July 28, 2010Publication date: June 7, 2012Applicant: FUJI ELECTRIC CO., LTD.Inventors: Hiromichi Gohara, Akira Morozumi, Keiichi Higuchi
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Patent number: 7215111Abstract: A magnetic motion sensor has: two magnetic sensors aligned in a direction along which changes in a magnetic field shift for detecting an appearance of the changes; a differential means for taking out a differential signal of output signals from these two magnetic sensors; and a timing detection means for generating a pulse, indicating a timing at which the changes in a magnetic field pass through either of the magnetic sensors, when an output signal of the magnetic sensor in question strides over a threshold value, while generating a pulse, indicating a timing at which the changes in a magnetic field pass through in between the magnetic sensors, when the differential signal strides over the threshold value.Type: GrantFiled: August 24, 2005Date of Patent: May 8, 2007Assignee: Hitachi Cable, Ltd.Inventors: Masayoshi Kaneyasu, Kazuhiro Komatsuzaki, Keiichi Higuchi, Takashi Onimoto
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Publication number: 20060043963Abstract: A magnetic motion sensor has: two magnetic sensors aligned in a direction along which changes in a magnetic field shift for detecting an appearance of the changes; a differential means for taking out a differential signal of output signals from these two magnetic sensors; and a timing detection means for generating a pulse, indicating a timing at which the changes in a magnetic field pass through either of the magnetic sensors, when an output signal of the magnetic sensor in question strides over a threshold value, while generating a pulse, indicating a timing at which the changes in a magnetic field pass through in between the magnetic sensors, when the differential signal strides over the threshold value.Type: ApplicationFiled: August 24, 2005Publication date: March 2, 2006Inventors: Masayoshi Kaneyasu, Kazuhiro Komatsuzaki, Keiichi Higuchi, Takashi Onimoto
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Publication number: 20050154066Abstract: The object of the present invention is to provide a composition which is effective in retarding or preventing the development of energy decrease, appearance change, etc. of humans and animals due to aging, and is highly safe even with a long period of taking. The present invention relates to an antiaging composition which comprises reduced coenzyme Q as an active ingredient. By feeding mice which develop the aging symptom early (aging-accelerated model mice) with a feed containing reduced coenzyme Q10 for a long period of time, aging process was prevented and retarded. Furthermore, aging-accelerated model mice fed with reduced coenzyme Q10 for a long period of time showed no toxic symptom, thus it was found that the antiaging composition comprising a composition containing said substance can be made into a safe antiaging composition capable of being taken for a long period of time.Type: ApplicationFiled: January 6, 2005Publication date: July 14, 2005Inventors: Kenji Fujii, Taizo Kawabe, Hiroshi Kubo, Keiichi Higuchi
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Patent number: 5903697Abstract: An optical waveguide 3 comprises a substrate like a Si substrate having a projection with a flat surface and inclined side surfaces thereon, a buffer layer having a refractive index of n.sub.0 formed on lower surfaces of the substrate, a secondary buffer layer having a refractive index of n.sub.0 formed on the buffer layer, a core waveguide having a refractive index of n.sub.1 formed on the secondary buffer layer and a cladding layer having a refractive index of n.sub.0 covering the core waveguide. The flat surface of the projection 31 is exposed through an opening. The secondary buffer layer controls a transmission loss increase caused by partial thickness differences of the ground buffer layer or scattering by scratches or strains created by the grind.Type: GrantFiled: July 22, 1997Date of Patent: May 11, 1999Assignees: Hitachi Ltd., Hitachi Cable, Ltd., Nippon Telegraph and Telephone CorporationInventors: Yasufumi Yamada, Masahiro Yanagisawa, Hiroaki Okano, Keiichi Higuchi, Hisato Uetsuka, Tatsuo Teraoka, Satoshi Aoki, Yasunori Iwafuji
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Patent number: D774479Type: GrantFiled: May 27, 2015Date of Patent: December 20, 2016Assignee: Fuji Electric Co., Ltd.Inventors: Shin Soyano, Yoshikazu Takayima, Keiichi Higuchi, Takahiro Koyama
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Patent number: D814433Type: GrantFiled: October 12, 2016Date of Patent: April 3, 2018Assignee: Fuji Electric Co., LtdInventors: Shin Soyano, Yoshikazu Takamiya, Keiichi Higuchi, Takahiro Koyama
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Patent number: D827593Type: GrantFiled: January 5, 2018Date of Patent: September 4, 2018Assignee: Fuji Electric Co., LtdInventors: Shin Soyano, Yoshikazu Takamiya, Keiichi Higuchi, Takahiro Koyama