Patents by Inventor Yuji Kimoto
Yuji Kimoto 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: 11114985Abstract: A high frequency amplifier 1 includes an input terminal PIN, an output terminal POUT, a transistor 5 configured to amplify an RF signal applied to the input terminal PIN, a matching circuit 9 for a fundamental of the RF signal and a reflection circuit 7 for a harmonic relative to the fundamental, the matching circuit 9 and the reflection circuit 7 being connected in series between the transistor 5 and the output terminal POUT, an extraction circuit 13 configured to extract a harmonic appearing at the output terminal POUT, processing circuits 15, 17 configured to adjust a phase and intensity of the harmonic extracted by the extraction circuit 13, and a multiplexing circuit 19 configured to multiplex the harmonic processed by the processing circuits 15, 17 to the harmonic reflected by the reflection circuit 7 and give the multiplexed harmonic to the transistor 5.Type: GrantFiled: April 9, 2020Date of Patent: September 7, 2021Assignee: SUMITOMO ELECTRIC DEVICE INNOVATIONS, INC.Inventor: Yuji Kimoto
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Publication number: 20200328722Abstract: A high frequency amplifier 1 includes an input terminal PIN, an output terminal POUT, a transistor 5 configured to amplify an RF signal applied to the input terminal PIN, a matching circuit 9 for a fundamental of the RF signal and a reflection circuit 7 for a harmonic relative to the fundamental, the matching circuit 9 and the reflection circuit 7 being connected in series between the transistor 5 and the output terminal POUT, an extraction circuit 13 configured to extract a harmonic appearing at the output terminal POUT, processing circuits 15, 17 configured to adjust a phase and intensity of the harmonic extracted by the extraction circuit 13, and a multiplexing circuit 19 configured to multiplex the harmonic processed by the processing circuits 15, 17 to the harmonic reflected by the reflection circuit 7 and give the multiplexed harmonic to the transistor 5.Type: ApplicationFiled: April 9, 2020Publication date: October 15, 2020Applicant: SUMITOMO ELECTRIC DEVICE INNOVATIONS, INC.Inventor: Yuji KIMOTO
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Patent number: 9086393Abstract: A sensor control device including an anomaly diagnosis section. When at least one of a first NOX concentration Ip2W based on the output OP1 of a first differential amplification circuit (210) and a second NOX concentration Ip2N based on the output OP2 of a second differential amplification circuit (220) falls within an anomaly diagnosis range ZN, the difference D between Ip2W and Ip2N is obtained, and the difference D is stored in a difference accumulation buffer BF such that 16 values of the difference D continuously sampled up to the present are stored. The integrated value (difference integral value) Dint of the difference D is obtained. When the difference integrated value Dint becomes equal to or greater than a predetermined value Di0, the sensor control device indicates a diagnosis result of “anomalous.Type: GrantFiled: October 6, 2010Date of Patent: July 21, 2015Assignee: NGK SPARK PLUG CO., LTD.Inventors: Katsunori Yazawa, Yuji Kimoto
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Publication number: 20130331015Abstract: Cup type grinding wheel to be attached to a rotary tool includes a plastic base plate made of a glass fiber-reinforced plastic, a metal annular plate with pieces of grindstone on a fixing surface of the metal annular plate, and fasteners for integrating the plastic base plate with the metal annular plate. Heads of fasteners are positioned at the same level as the fixing surface or at a lower level than the fixing surface toward the plastic base plate.Type: ApplicationFiled: November 13, 2012Publication date: December 12, 2013Applicant: GOEI CO., LTD.Inventors: Yuji KIMOTO, Kazumasa TACHIBANA
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Publication number: 20130331016Abstract: Cup type grinding wheel to be attached to a rotary tool includes a plastic base plate made of a glass fiber-reinforced plastic, a metal annular plate with pieces of grindstone or a ring-shaped grindstone on a fixing surface of the metal annular plate, and fasteners for integrating the plastic base plate with the metal annular plate. Heads of fasteners are positioned at the same level as the fixing surface or at a lower level than the fixing surface toward the plastic base plate.Type: ApplicationFiled: March 29, 2013Publication date: December 12, 2013Applicant: Goei Co., Ltd.Inventors: Yuji Kimoto, Kazumasa Tachibana
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Patent number: 8532869Abstract: There is provided a controller for controlling a vehicle device, which includes a circuit board having mounted thereon a control circuit that controls operations of the vehicle device, a first temperature sensor mounted on a first specific region of the circuit board to output a first signal responsive to a temperature of the first specific region of the circuit board and a second temperature sensor mounted on a second specific region of the circuit board to output a second signal responsive to a temperature of the second specific region of the circuit board. The control circuit has an anomaly detection portion that judges the occurrence or non-occurrence of an output anomaly in the first temperature sensor based on the first and second signals of the first and second temperature sensors.Type: GrantFiled: December 21, 2010Date of Patent: September 10, 2013Assignee: NGK Spark Plug Co., Ltd.Inventors: Yuji Kimoto, Yasuhiro Ishiguro
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Patent number: 8417413Abstract: In an oxygen sensor control apparatus, after start of fuel cut, the weighted average Ipd of corrected values obtained by multiplying the output value of a mounted oxygen sensor by a correction coefficient Kp is obtained as a representative value Ipe, representing the corrected values in the fuel cut period (S19). In the case where the number of times the representative value Ipe is continuously judged not to fall outside a second range (S21: NO) and to fall outside a first range (S23: YES) reaches 10 (a first number of times) (S26: YES), a new correction coefficient Kp is computed (S27). In the case where the number of times the representative value Ipe is continuously judged to fall outside the second range (S21: YES) reaches 4 (a second number of times smaller than the first number of times) (S29: YES), a new correction coefficient Kp is computed (S30).Type: GrantFiled: March 8, 2012Date of Patent: April 9, 2013Assignee: NGK Spark Plug Co., Ltd.Inventors: Yasuhiro Ishiguro, Katsunori Yazawa, Yuji Kimoto
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Publication number: 20120232745Abstract: In an oxygen sensor control apparatus, after start of fuel cut, the weighted average Ipd of corrected values obtained by multiplying the output value of a mounted oxygen sensor by a correction coefficient Kp is obtained as a representative value Ipe, representing the corrected values in the fuel cut period (S19). In the case where the number of times the representative value Ipe is continuously judged not to fall outside a second range (S21: NO) and to fall outside a first range (S23: YES) reaches 10 (a first number of times) (S26: YES), a new correction coefficient Kp is computed (S27). In the case where the number of times the representative value Ipe is continuously judged to fall outside the second range (S21: YES) reaches 4 (a second number of times smaller than the first number of times) (S29: YES), a new correction coefficient Kp is computed (S30).Type: ApplicationFiled: March 8, 2012Publication date: September 13, 2012Applicant: NGK SPARK PLUG CO., LTD.Inventors: Yasuhiro ISHIGURO, Katsunori YAZAWA, Yuji KIMOTO
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Publication number: 20120210174Abstract: A sensor control device including an anomaly diagnosis section. When at least one of a first NOX concentration Ip2W based on the output OP1 of a first differential amplification circuit (210) and a second NOX concentration Ip2N based on the output OP2 of a second differential amplification circuit (220) falls within an anomaly diagnosis range ZN, the difference D between Ip2W and Ip2N is obtained, and the difference D is stored in a difference accumulation buffer BF such that 16 values of the difference D continuously sampled up to the present are stored. The integrated value (difference integral value) Dint of the difference D is obtained. When the difference integrated value Dint becomes equal to or greater than a predetermined value Di0, the sensor control device indicates a diagnosis result of “anomalous.Type: ApplicationFiled: October 6, 2010Publication date: August 16, 2012Applicant: NGK SPARK PLUG CO., LTD.Inventors: Katsunori Yazawa, Yuji Kimoto
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Publication number: 20110172876Abstract: There is provided a controller for controlling a vehicle device, which includes a circuit board having mounted thereon a control circuit that controls operations of the vehicle device, a first temperature sensor mounted on a first specific region of the circuit board to output a first signal responsive to a temperature of the first specific region of the circuit board and a second temperature sensor mounted on a second specific region of the circuit board to output a second signal responsive to a temperature of the second specific region of the circuit board. The control circuit has an anomaly detection portion that judges the occurrence or non-occurrence of an output anomaly in the first temperature sensor based on the first and second signals of the first and second temperature sensors.Type: ApplicationFiled: December 21, 2010Publication date: July 14, 2011Applicant: NGK SPARK PLUG CO., LTD.Inventors: Yuji Kimoto, Yasuhiro Ishiguro
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Patent number: 7266459Abstract: It is an object of the invention to provide a gas detecting device capable of relieving the influence of an environment such as a temperature, a humidity or a wind velocity to detect a change in a concentration of a specific gas and an autoventilation system for a vehicle using the gas detecting device. More specifically, a gas detecting device (10) using a gas sensor element (11) changing a sensor resistance Rs depending on a concentration of a gas such as NOx and an autoventilation system (100) for a vehicle according to the invention A/D convert the output of a sensor resistance value converting circuit (14) to acquire a sensor output value S(n), calculates a base value B(n) based on B(n)=B(n?1)+k1{S(n)?B(n?1)}, and furthermore, calculates a difference value of D(n)=S(n)?B(n).Type: GrantFiled: May 28, 2001Date of Patent: September 4, 2007Assignee: NGK Spark Plug Co., Ltd.Inventors: Yuji Kimoto, Toshiya Matsuoka
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Patent number: 6859737Abstract: A gas detection apparatus incorporating a gas sensor element and a vehicle automatic ventilation system including the apparatus in which a sensor output value S(n) is obtained, and a base value B(n) is calculated by use of Expression (1): B(n)=B(n?1)+k1[S(n)?B(n?1)]?k2[S(n)?S(n?5)] in the case where S(n)?B(n?1), or by use of Expression (3): B(n)=S(n) in the case where S(n)<B(n?1), followed by calculation of a difference value D(n); i.e., S(n)?B(n). When the difference value exceeds a predetermined high connection threshold, a high-concentration signal is generated to close a flap. After that, the base value B(n) is calculated by use of Expression (4): B(n)=B(n?1)+k3[S(n)?B(n?1)]?k4[S(n)?S(n?5)]. When the difference value becomes smaller than a predetermined low-concentration threshold, a low-concentration signal is generated to open the flap.Type: GrantFiled: November 27, 2002Date of Patent: February 22, 2005Assignee: NGK Spark Plug Co., Ltd.Inventors: Yuji Kimoto, Toshiya Matsuoka
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Patent number: 6714876Abstract: A control system for a gas sensor element capable of lessening the effect of variations in sensor properties among gas sensor elements as well as the effect of environmental factors, such as temperature and humidity, to thereby accurately detect variation in the concentration of a specific gas. In a control system 10 for a gas sensor element 11 whose sensor resistance Rs varies with the concentration of NOx gas, a pulse signal Sc which alternates between 0 V and +5 V is input to a pulse input terminal 17. When a voltage of 5 V is applied to the pulse input terminal 17, a capacitor 14 is charged via a fixed resistor 15 having a resistance Rc and a diode 16. When a voltage of 0 V is applied, the capacitor 14 discharges via the gas sensor element 11. An output voltage Vout is A/D-converted and processed by means of a microcomputer 20, thereby controlling an electronic control assembly 21.Type: GrantFiled: February 27, 2001Date of Patent: March 30, 2004Assignee: NGK Spark Plug Co., Ltd.Inventors: Yuji Kimoto, Toshiya Matsuoka
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Publication number: 20030110828Abstract: A gas detection apparatus incorporating a gas sensor element and a vehicle automatic ventilation system including the apparatus in which a sensor output value S(n) is obtained, and a base value B(n) is calculated by use of Expression (1): B(n)=B(n−1)+k1[S(n)−B(n−1)]−k2[S(n)−S(n−1)] in the case where S(n)≧B(n−1), or by use of Expression (2): B(n)=S(n) in the case where S(n)<B(n−1), followed by calculation of a difference value D(n); i.e., S(n)−B(n). When the difference value exceeds a predetermined concentration threshold, a high-concentration signal is generated to close a flap. After that, the base value B(n) is calculated by use of Expression (5): B(n)=B(n−1)+k3[S(n)−B(n−1)]−k4[S(n)−S(n−1)]. When the difference value becomes smaller than a predetermined concentration threshold, a low-concentration signal is generated to open the flap.Type: ApplicationFiled: November 27, 2002Publication date: June 19, 2003Applicant: NGK Spark Plug Co., Ltd.Inventors: Yuji Kimoto, Toshiya Matsuoka
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Publication number: 20020154019Abstract: It is an object of the invention to provide a gas detecting device capable of relieving the influence of an environment such as a temperature, a humidity or a wind velocity to detect a change in a concentration of a specific gas and an autoventilation system for a vehicle using the gas detecting device.Type: ApplicationFiled: June 10, 2002Publication date: October 24, 2002Inventors: Yuji Kimoto, Toshiya Matsuoka
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Patent number: 6352178Abstract: A flexible container excellent in durability and stability for storage and conveyance and capable to prevent the content in the flexible container from scattering.Type: GrantFiled: January 2, 2001Date of Patent: March 5, 2002Assignee: Wakayama Seika Kogyo Co., Ltd.Inventors: Yuji Kimoto, Akira Ono
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Publication number: 20010032054Abstract: A control system for a gas sensor element capable of lessening the effect of variations in sensor properties among gas sensor elements as well as the effect of environmental factors, such as temperature and humidity, to thereby accurately detect variation in the concentration of a specific gas. In a control system 10 for a gas sensor element 11 whose sensor resistance Rs varies with the concentration of NOx gas, a pulse signal Sc which alternates between 0 V and +5 V is input to a pulse input terminal 17. When a voltage of 5 V is applied to the pulse input terminal 17, a capacitor 14 is charged via a fixed resistor 15 having a resistance Rc and a diode 16. When a voltage of 0 V is applied, the capacitor 14 discharges via the gas sensor element 11. An output voltage Vout is A/D-converted and processed by means of a microcomputer 20, thereby controlling an electronic control assembly 21.Type: ApplicationFiled: February 27, 2001Publication date: October 18, 2001Inventors: Yuji Kimoto, Toshiya Matsuoka
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Patent number: 4626881Abstract: A capacitor is disclosed having two capacitor elements of MIS structure, the capacitor elements being connected in a zigzag manner to realize a balanced parallel connection for the capacitor elements. A circuit having a pair of balanced impedance branches, the branches being bridged by the balanced parallel capacitor disclosed above, resultantly sustains the impedance branches balanced regardless of the amount of the parasitic capacity involved.Type: GrantFiled: October 5, 1984Date of Patent: December 2, 1986Assignees: Sanyo Electric Co., Ltd., Tokyo Sanyo Electric Co., Ltd.Inventors: Hiroyasu Kishi, Yuji Kimoto, Keizo Mori
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Patent number: 4353034Abstract: An FM signal is applied to an input of a differential amplifier including a pair of transistors having symmetrical characteristics. A 180.degree. phase shifting circuit is connected between two inputs of the differential amplifier. Accordingly, the inputs of the pair of transistors of the differential amplifier receive the FM signal, as converted into an AM signal. The respective base-emitter rectifying junctions of the pair of transistors each rectify the AM signals, as received. The emitter electrodes of the pair of transistors are commonly connected through a predetermined resistor, with the common connection point being connected to the ground through a capacitor. Accordingly, a smoothing circuit is implemented by the emitter resistor and the capacitor. A load resistor is connected to the collector electrode of one of the pair of transistors, so that a detected output is withdrawn therefrom.Type: GrantFiled: November 16, 1979Date of Patent: October 5, 1982Assignees: Sanyo Electric Co., Ltd., Tokyo Sanyo Electric Co., Ltd.Inventor: Yuji Kimoto