Patents Assigned to Denso Corportion
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Patent number: 10240835Abstract: A pilot on-off valve in a refrigeration cycle device includes a main on-off valve that opens or closes a bypass passage through which a high-pressure side portion and a low-pressure side portion of a cycle communicate with each other, and a pilot valve that opens or closes a communication passage through which an inflow port and an outflow port of the pilot on-off valve communicate with each other. When the main on-off valve opens the bypass passage, the pilot valve opens the communication passage in a state where a refrigerant passage, in which a refrigerant flowing out of the pilot on-off valve flows, is closed.Type: GrantFiled: September 2, 2013Date of Patent: March 26, 2019Assignee: DENSO CORPORTIONInventor: Hiromi Ohta
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Publication number: 20150228540Abstract: In a method for producing a semiconductor device having a through electrode structure, a masking material is formed so as to bridge over a through hole formed in a second semiconductor substrate, and a hole is formed in the masking material at a position corresponding to the through hole. A contact hole is formed in an insulating film via this hole. In such a method, even if there is a large level difference from the surface of the second semiconductor substrate to the bottom of the through hole, only the masking material bridged over the through hole is exposed by photolithography. Therefore, photolithography for a large level difference is not necessary. As a result, the hole can be formed in the masking material successfully, and the contact hole can be formed successively by an anisotropic dry etching via this hole, even in the case where etching for a large level difference is performed.Type: ApplicationFiled: September 3, 2013Publication date: August 13, 2015Applicant: DENSO CORPORTIONInventors: Takashi Katsumata, Hisanori Yokura
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Publication number: 20130131919Abstract: A control unit of a vehicle control system estimates running-condition of a vehicle for a predetermined estimation period. A fuel-amount estimating portion estimates an engine condition related to a cooling efficiency, based on the estimated running condition. The control unit estimates multiple possible control patterns and calculates evaluation values related to the cooling efficiency for respective cases, in which a compressor is operated in accordance with each of the control patterns. The control unit selects one of control patterns to actually operate the compressor in accordance with the selected control pattern, so that fuel consuming amount can be reduced.Type: ApplicationFiled: November 21, 2012Publication date: May 23, 2013Applicant: DENSO CORPORTIONInventor: DENSO CORPORTION
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Publication number: 20130125862Abstract: A fuel-pressure-sensor diagnosis device is applied to a fuel injection system having a plurality of fuel pressure sensors detecting a fuel pressure which is provided to a fuel injector of each cylinder, and a control portion controlling the fuel injectors by using a computed result which is computed based on a variation in the fuel pressure detected by the fuel pressure sensor due to a fuel injection. Two pressure sensors of which pulsation values of the detected fuel pressure are in a specified range are selected among the multiple fuel pressure sensors. For example, a pair “A” refers to the sensors #1 and #3, a pair “B” refers to the sensors #3 and #4, a pair “C” refers to the sensors #4 and #2, and a pair “D” refers to the sensors #2 and #1. An ECU diagnoses whether the selected sensors are faulty by comparing the detected values.Type: ApplicationFiled: November 23, 2012Publication date: May 23, 2013Applicant: DENSO CORPORTIONInventor: Denso Corporation
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Patent number: 8053685Abstract: A metal wiring plate includes a soldering portion to which an electronic device is soldered and a wiring portion extending from the soldering portion and configured to electrically connect the electronic device to other device. The wiring portion includes a narrow portion located adjacent to the soldering portion. The width of the narrow portion is less than the width of the soldering portion so that the narrow portion helps prevent melted solder applied to the soldering portion from spreading to areas outside the soldering portion. The narrow portion allows the electronic apparatus to be surely soldered to the soldering portion without using solder resist.Type: GrantFiled: April 22, 2008Date of Patent: November 8, 2011Assignee: Denso CorportionInventors: Tatsuya Watanabe, Masahiko Imoto, Hideyuki Iiboshi, Shinichi Awano
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Publication number: 20100148620Abstract: A stator for an electric rotating machine includes a hollow cylindrical stator core and a stator coil made up of a plurality of wave-shaped electric wires. Each of the electric wires has a plurality of in-slot portions, each of which is received in one of slots of the stator core, and a plurality of turn portions each of which is located outside of the slots of the stator core to connect one adjacent pair of the in-slot portions of the electric wire. The stator coil includes a plurality of radial position shift portions each of which is provided, in one of the electric wires, in one of the turn portions of the electric wire between an apex part of the turn portion and one of the in-slot portions of the electric wire adjoining the turn portion and is radially bent to shift the radial position of the electric wire.Type: ApplicationFiled: December 15, 2009Publication date: June 17, 2010Applicant: DENSO CORPORTIONInventors: Atsuo Ishizuka, Atsushi Umeda
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Publication number: 20080264174Abstract: A pressure sensor is provided, which includes a case, a sensing chip located in the case for detecting pressure, and a protective material for covering and protecting the sensing chip in the case. Corners of the case, which are in contact with the protective material are each formed into a rounded shape. A curvature radius of each of the corners is adapted to be 0.5 mm or more.Type: ApplicationFiled: October 11, 2007Publication date: October 30, 2008Applicant: DENSO CORPORTIONInventors: Takashi NOMURA, Hironobu BABA, Yoshifumi WATANABE
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Publication number: 20080270831Abstract: It is determined that a write access is executed to a stack area of a main memory. It is then determined whether another write access to a corresponding access destination address in the stack area occurred in the past by referring to an access flag table. In contrast, it is determined that a write access is executed to a global area of the main memory. It is then determined whether another write access to a corresponding access destination address in the global area occurred in the past with referring to an access list. Such a configuration can efficiently provide individual advantages of the determination methods using both the access flag table and the address list. The presence or absence of the past saving execution can be efficiently determined at the time of write access.Type: ApplicationFiled: April 15, 2008Publication date: October 30, 2008Applicant: DENSO CORPORTIONInventor: Akimasa Niwa
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Publication number: 20070090832Abstract: A liquid level detecting device for detecting liquid level contained in a tank includes a float and an arm that moves in a prescribed manner when liquid level changes, a permanent magnet for forming a magnetic field, a hall IC for generating an electric signal in response to the motion of the magnetic field, a rotary member linked with the arm and the permanent magnet for moving the magnetic field relative to the hall IC as the float and the arm move, a terminal member for connecting the hall IC to an outside control circuit; and a mold body including a resinous holder for holding the hall IC and the terminal member. The resinous holder includes a sheath for insulating the hall IC from heat and mechanical stress generated when the mold body is formed.Type: ApplicationFiled: October 23, 2006Publication date: April 26, 2007Applicant: DENSO CORPORTIONInventors: Atsushi Yasuda, Isao Miyagawa