Patents by Inventor Kikuo Kato
Kikuo Kato 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: 20240106316Abstract: A DC power supply and distribution system is obtained that improves power distribution efficiency at a low-load factor while suppressing overall upsizing. The DC power supply and distribution system includes a main AC/DC converter and an auxiliary AC/DC converter connected in parallel to the main AC/DC converter and having a rated power capacity smaller than that of the main AC/DC converter, wherein when the absolute value of the DC output power is smaller than the absolute value of a threshold power set smaller than the rated power capacity of the auxiliary AC/DC converter, a first switching command for switching from the first operation mode to the second operation mode is generated for a power conversion unit.Type: ApplicationFiled: February 26, 2021Publication date: March 28, 2024Applicant: Mitsubishi Electric CorporationInventors: Yusuke KATO, Takuya KATAOKA, Tomoyuki KAWAKAMI, Kikuo IZUMI
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Patent number: 8344458Abstract: There is provided a semiconductor device capable of suppressing malfunction of an element to be protected, caused by electrons from an output element into a semiconductor substrate. The semiconductor device is provided with the semiconductor substrate, the output element, the element to be protected, a tap part, and a first active-barrier structure. The first active-barrier structure is disposed between the element to be protected and the tap part. Further, the first active-barrier structure includes an n-type region joined with a p-type doped region, and a p-type region in ohmic coupling with the n-type region.Type: GrantFiled: May 18, 2011Date of Patent: January 1, 2013Assignee: Renesas Electronics CorporationInventors: Yasuki Yoshihisa, Kikuo Kato, Tetsuya Nitta, Kazuma Onishi
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Patent number: 8093762Abstract: In a power phase period when in normal operation, switch portions SW2H and SW2L and switch portions SW3H and SW3L are turned ON, respectively, and switch portions SW1H and SW1L are turned OFF. And floating power supply is provided from an electrostatic capacitance element CS to buses A and B, a floating control circuit 4, a transmitter circuit 5, and a receiver circuit 6, respectively. In a data phase period, the switch portions SW1H and SW1L are turned ON, and the switch portions SW2H, SW2L, SW3H, and SW3L are turned OFF. By that manner, the electrostatic capacitance element CS is charged by the power supply of a battery B, and an electrostatic capacitance element CH provides the floating power supply to the floating control circuit 4, the transmitter circuit 5, and the receiver circuit 6, respectively. By this manner, a floating switch unit 7 in which the number of the switch portions is considerably reduced can be configured.Type: GrantFiled: July 8, 2011Date of Patent: January 10, 2012Assignee: Renesas Electronics CorporationInventors: Kazuyoshi Takai, Takahiro Yashita, Kikuo Kato, Kazuaki Kubo
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Publication number: 20110284987Abstract: There is provided a semiconductor device capable of suppressing malfunction of an element to be protected, caused by electrons from an output element into a semiconductor substrate. The semiconductor device is provided with the semiconductor substrate, the output element, the element to be protected, a tap part, and a first active-barrier structure. The first active-barrier structure is disposed between the element to be protected and the tap part. Further, the first active-barrier structure includes an n-type region joined with a p-type doped region, and a p-type region in ohmic coupling with the n-type region.Type: ApplicationFiled: May 18, 2011Publication date: November 24, 2011Inventors: Yasuki YOSHIHISA, Kikuo KATO, Tetsuya NITTA, Kazuma ONISHI
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Publication number: 20110260776Abstract: In a power phase period when in normal operation, switch portions SW2H and SW2L and switch portions SW3H and SW3L are turned ON, respectively, and switch portions SW1H and SW1L are turned OFF. And floating power supply is provided from an electrostatic capacitance element CS to buses A and B, a floating control circuit 4, a transmitter circuit 5, and a receiver circuit 6, respectively. In a data phase period, the switch portions SW1H and SW1L are turned ON, and the switch portions SW2H, SW2L, SW3H, and SW3L are turned OFF. By that manner, the electrostatic capacitance element CS is charged by the power supply of a battery B, and an electrostatic capacitance element CH provides the floating power supply to the floating control circuit 4, the transmitter circuit 5, and the receiver circuit 6, respectively. By this manner, a floating switch unit 7 in which the number of the switch portions is considerably reduced can be configured.Type: ApplicationFiled: July 8, 2011Publication date: October 27, 2011Inventors: KAZUYOSHI TAKAI, Takahiro Yashita, Kikuo Kato, Kazuaki Kubo
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Patent number: 7989988Abstract: In a power phase period when in normal operation, switch portions SW2H and SW2L and switch portions SW3H and SW3L are turned ON, respectively, and switch portions SW1H and SW1L are turned OFF. And floating power supply is provided from an electrostatic capacitance element CS to buses A and B, a floating control circuit 4, a transmitter circuit 5, and a receiver circuit 6, respectively. In a data phase period, the switch portions SW1H and SW1L are turned ON, and the switch portions SW2H, SW2L, SW3H, and SW3L are turned OFF. By that manner, the electrostatic capacitance element CS is charged by the power supply of a battery B, and an electrostatic capacitance element CH provides the floating power supply to the floating control circuit 4, the transmitter circuit 5, and the receiver circuit 6, respectively. By this manner, a floating switch unit 7 in which the number of the switch portions is considerably reduced can be configured.Type: GrantFiled: June 30, 2006Date of Patent: August 2, 2011Assignee: Renesas Electronics CorporationInventors: Kazuyoshi Takai, Takahiro Yashita, Kikuo Kato, Kazuaki Kubo
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Publication number: 20090200874Abstract: In a power phase period when in normal operation, switch portions SW2H and SW2L and switch portions SW3H and SW3L are turned ON, respectively, and switch portions SW1H and SW1L are turned OFF. And floating power supply is provided from an electrostatic capacitance element CS to buses A and B, a floating control circuit 4, a transmitter circuit 5, and a receiver circuit 6, respectively. In a data phase period, the switch portions SW1H and SW1L are turned ON, and the switch portions SW2H, SW2L, SW3H, and SW3L are turned OFF. By that manner, the electrostatic capacitance element CS is charged by the power supply of a battery B, and an electrostatic capacitance element CH provides the floating power supply to the floating control circuit 4, the transmitter circuit 5, and the receiver circuit 6, respectively. By this manner, a floating switch unit 7 in which the number of the switch portions is considerably reduced can be configured.Type: ApplicationFiled: June 30, 2006Publication date: August 13, 2009Inventors: Kazuyoshi Takai, Takahiro Yashita, Kikuo Kato, Kazuaki Kubo
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Patent number: 7562803Abstract: In a friction spot joint structure, a first plate member is pressed against a second plate member by using a rotary tool and a receiving member. A concave portion is formed by a rotating pin portion of the rotating tool, with an interface between the first plate member and the second plate member remained. In this time, the first and second plate members are allowed to plastic-flow, so that an annular bulging portion of the second plate member raised into the first plate member is formed around the concave portion.Type: GrantFiled: March 27, 2007Date of Patent: July 21, 2009Assignee: Mazda Motor CorporationInventors: Kenji Takase, Tomoyuki Iwashita, Kikuo Kato, Toshiyuki Gendou
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Publication number: 20070170229Abstract: In a friction spot joint structure, a first plate member is pressed against a second plate member by using a rotary tool and a receiving member. A concave portion is formed by a rotating pin portion of the rotating tool, with an interface between the first plate member and the second plate member remained. In this time, the first and second plate members are allowed to plastic-flow, so that an annular bulging portion of the second plate member raised into the first plate member is formed around the concave portion.Type: ApplicationFiled: March 27, 2007Publication date: July 26, 2007Inventors: Kenji Takase, Tomoyuki Iwashita, Kikuo Kato, Toshiyuki Gendou
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Publication number: 20050178817Abstract: In a friction spot joint structure, a first plate member is pressed against a second plate member by using a rotary tool and a receiving member. A concave portion is formed by a rotating pin portion of the rotating tool, with an interface between the first plate member and the second plate member remained. In this time, the first and second plate members are allowed to plastic-flow, so that an annular bulging portion of the second plate member raised into the first plate member is formed around the concave portion.Type: ApplicationFiled: December 15, 2004Publication date: August 18, 2005Applicant: Mazda Motor CorporationInventors: Kenji Takase, Tomoyuki Iwashita, Kikuo Kato, Toshiyuki Gendou
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Patent number: 4917042Abstract: An apparatus for degreasing plastic automobile parts has a degreasing tank with a liquid degreasing agent reservoir in the bottom thereof and a degreasing vapor space thereabove, a heater in the reservoir for heating degreasing agent for vaporizing it, and a parts conveyor extending through the tank and having a downwardly inclined portion extending downwardly into the degreasing vapor space from one end to a nadir within the degreasing vapor space and an upwardly inclined portion extending out of the degreasing vapor space. Several cooling coils extend around the inside of the tank with an uppermost cooling coil at a level corresponding to the top of the degreasing vapor space and the remaining coils being spaced downwardly into said degreasing vapor space at intervals.Type: GrantFiled: August 31, 1988Date of Patent: April 17, 1990Assignee: Mazda Motor Manufacturing (USA) CorporationInventors: Tadayoshi Kuronaga, Yuji Tanaka, Kikuo Kato
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Patent number: 4188838Abstract: A control apparatus of a transfer mechanism includes a case member, an input axle, an intermediate axle arranged parallel with the input axle, an output axle on the rear wheel side arranged parallel with the input axle and the intermediate axle, an output axle on the front wheel side coaxially arranged with the output axle on the rear wheel side, an input gear mounted on the input axle, a fixing member secured to the case member, an intermediate gear mounted on the intermediate axle and engaged with the input gear, an output gear coaxially arranged with the output axle of the front wheel axle and engaged with the intermediate gear, a simple planetary gear set including a carrier integrally connected to the output gear, a ring gear integrally connected to the output axle of rear wheel side, and a sun gear selectively engaged with the output axle on the front wheel side or the fixing member or the output axle on the front wheel side and the output gear, the mechanism further including a tubular axle integrallyType: GrantFiled: May 13, 1977Date of Patent: February 19, 1980Assignee: Aisin Seiki Kabushiki KaishaInventors: Toshiyuki Nakao, Kikuo Kato
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Patent number: 4185727Abstract: A wheel hub clutching mechanism includes an internally splined body, and a clutch ring which is adapted to be meshed with a shaft driven pinion and is resiliently connected by means of a connecting spring to a follower which, in turn, is controlled by means of a rotatable cam. The follower and the clutch ring are biased toward the locked positions thereof by means of a compression spring when the cam is rotated to its locked position by means of a manually operated handle, and the clutch ring is retracted to the free position thereof together with the follower when the cam is rotated to its free position by means of the handle. A pinion supporting member is also interposed between the shaft driven pinion and the body, the splines of the body being formed so as to be substantially parallel to the shaft axis.Type: GrantFiled: September 27, 1977Date of Patent: January 29, 1980Assignee: Aisin Seiki Kabushiki KaishaInventors: Hiroji Yamaguchi, Kikuo Kato, Tooru Kagata