Patents by Inventor Yoshio Kawaguchi
Yoshio Kawaguchi 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: 20040150941Abstract: A laminated capacitor has an end surface pitch Pe, which defines an interval between adjacent first and second external terminal electrodes disposed on end surfaces having shorter sides in a body of a laminated capacitor, which is equal to or less than about 0.9 times of a side-surface pitch Ps, which defines an interval between adjacent first and second external terminal electrodes disposed on side surfaces having longer sides, in order to enhance the effect of magnetic-flux cancellation at the end surfaces and to reduce the equivalent series inductance of the whole laminated capacitor.Type: ApplicationFiled: November 13, 2003Publication date: August 5, 2004Applicant: Murata Manufacturing Co., Ltd.Inventors: Yoichi Kuroda, Yoshio Kawaguchi, Masaaki Taniguchi, Kenichi Mizuno
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Patent number: 6694945Abstract: An injection quantity control system for an internal combustion engine stores a value Qb, which is a sum of an FCCB correction value and an ISC correction value corresponding to an injection frequency of K times per combustion in multi-injection in an idling stabile state of the engine. The system stores a value Qc, which is a sum of the FCCB correction value and the ISC correction value corresponding to the injection frequency of N times. Based on a difference between the values Qb and Qc, a final learning value (Q1/K or Q1/N) is calculated. Thus, an injector individual difference, an inter-cylinder injection quantity variation, and an injector aging deterioration quantity can be discriminated from an increase in an engine-demanded injection quantity due to an engine load factor.Type: GrantFiled: June 19, 2003Date of Patent: February 24, 2004Assignee: Denso CorporationInventors: Yoshio Kawaguchi, Katsuhiko Takeuchi
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Publication number: 20030233997Abstract: An injection quantity control system for an internal combustion engine stores a value Qb, which is a sum of an FCCB correction value and an ISC correction value corresponding to an injection frequency of K times per combustion in multi-injection in an idling stabile state of the engine. The system stores a value Qc, which is a sum of the FCCB correction value and the ISC correction value corresponding to the injection frequency of N times. Based on a difference between the values Qb and Qc, a final learning value (Q1/K or Q1/N) is calculated. Thus, an injector individual difference, an inter-cylinder injection quantity variation, and an injector aging deterioration quantity can be discriminated from an increase in an engine-demanded injection quantity due to an engine load factor.Type: ApplicationFiled: June 19, 2003Publication date: December 25, 2003Inventors: Yoshio Kawaguchi, Katsuhiko Takeuchi
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Patent number: 6577491Abstract: A capacitor array includes four internal electrodes and internal electrode extraction sections which are in electrical conduction with the corresponding internal electrodes and have predetermined widths which are symmetrically arranged relative to a long-side-direction center of each dielectric sheet. Here, the internal electrode extraction sections are arranged so that a pitch between the internal electrode extraction sections is smaller than a pitch between the internal electrodes. In other words, the internal electrode extraction sections are arranged so that they are disposed towards the center in the direction in which they are disposed. A predetermined number of dielectric sheets formed in this way are stacked, and dielectric sheets not having electrodes are stacked above and below the stacked predetermined number of dielectric sheets.Type: GrantFiled: November 5, 2002Date of Patent: June 10, 2003Assignee: Murata Manufacturing Co., Ltd.Inventors: Daisuke Ohtsuka, Masaaki Taniguchi, Yoshio Kawaguchi
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Publication number: 20030099083Abstract: A capacitor array includes four internal electrodes and internal electrode extraction sections which are in electrical conduction with the corresponding internal electrodes and have predetermined widths which are symmetrically arranged relative to a long-side-direction center of each dielectric sheet. Here, the internal electrode extraction sections are arranged so that a pitch between the internal electrode extraction sections is smaller than a pitch between the internal electrodes. In other words, the internal electrode extraction sections are arranged so that they are disposed towards the center in the direction in which they are disposed. A predetermined number of dielectric sheets formed in this way are stacked, and dielectric sheets not having electrodes are stacked above and below the stacked predetermined number of dielectric sheets.Type: ApplicationFiled: November 5, 2002Publication date: May 29, 2003Applicant: Murata Manufacturing Co., Ltd.Inventors: Daisuke Ohtsuka, Masaaki Taniguchi, Yoshio Kawaguchi
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Patent number: 6476617Abstract: A sorting method of monolithic ceramic capacitors in which high reliable sorting can be efficiently achieved based on measuring an insulating resistance involves first performing a burn-in process, which applies not less than double of the rated voltage at the maximum working temperature to a monolithic ceramic capacitor. Thereafter, a high temperature insulation resistance measuring process, which involves measuring an insulation resistance while applying not less than the rated voltage at a temperature of not less than 70° C. to the monolithic ceramic capacitor, is performed so that monolithic ceramic capacitors having abnormal insulation resistances are eliminated. Preferably, the direction of applied voltage in the burn-in process agrees with the direction of applied voltage in the high temperature insulation resistance measuring process.Type: GrantFiled: October 21, 1999Date of Patent: November 5, 2002Assignee: Murata Manufacturing Co. Ltd.Inventors: Yoshio Kawaguchi, Yoshikazu Takagi, Yasunobu Yoneda
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Patent number: 6469517Abstract: In the temperature of 70-140 degrees C., the burn-in process of applying a voltage to monolithic ceramic capacitors so that the strength of the electric field applied between the internal electrodes opposing each other may be 7 30 kV/mm is performed. Subsequently, the insulation resistance of the monolithic ceramic capacitor is measured. The monolithic ceramic capacitors are sorted based on the insulation resistance measured during this insulation-resistance measurement process. In this case, it is sufficient to apply the burn-in process for 2-300 seconds.Type: GrantFiled: January 11, 2000Date of Patent: October 22, 2002Assignee: Murata Manufacturing Co., Ltd.Inventors: Yoshio Kawaguchi, Yoshikazu Takagi, Yasunobu Yoneda
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Patent number: 5030083Abstract: A hollow synthetic resin product manufacturing apparatus with an extruder having an extruding head for extruding a parison and a mold formed of lower and upper molding portions respectively having grooves, a cutter for cutting the parison extruded from the extruding head into a specified length, a robot having a hand for holding the parison at one point of the parison, and a control unit for moving the hand holding the above portion of the parison so that the parison be accommodated in the groove of the lower molding portion.Type: GrantFiled: December 28, 1989Date of Patent: July 9, 1991Assignee: Tigers Polymer CorporationInventors: Yoshikatsu Kohno, Yoshio Kawaguchi
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Patent number: 4521665Abstract: A method and system for determining weld quality in resistance welding in such a manner that acceptance or unacceptance is determined by comparing with their respective reference values the electrode voltage, the electrode current time, the number of electrode voltage pulse signals in excess of the reference value, and the integral of difference between the electrode voltage in excess of a base voltage and the base voltage, independently or simultaneously, in addition to the comparison of the electrode resistance with its reference value. The relatively low-priced system according to the present invention can determining weld quality accurately even when the electrode tips are deformed or crushed so as to form other current path areas.Type: GrantFiled: February 27, 1984Date of Patent: June 4, 1985Assignee: Nissan Motor Co., Ltd.Inventors: Shuji Nakata, Yoshio Kawaguchi, Akira Nishimura
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Patent number: 4503312Abstract: Method of controlling resistance welding to obtain high quality welds in which the pressure between the electrodes (2a, 2b) holding the materials (1a, 1b) to be welded is controlled so that the resistance value between the two electrodes (2a, 2b) is a predetermined value, and the welding current is regulated so that the voltage between the electrodes is a predetermined value, and the time during which the welding current flows is controlled to a fixed period.Type: GrantFiled: February 8, 1983Date of Patent: March 5, 1985Assignees: Nissan Motor Company, Limited, Nippon Avionics Co., Ltd.Inventors: Shuji Nakata, Yoshio Kawaguchi, Susumu Aono
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Patent number: 4465503Abstract: There are presented new diphenyl ether derivatives having a substituent selected from a halogen atom, a trifluoromethyl group and a methoxy group at the 4-position in one phenyl moiety, having optionally also halo-substituents at the 2- and 6-positions, and having a nitro group at the 4'-position and a substituent selected from an unsubstituted or substituted (1,3-dioxorane-4-yl)methoxy group, an unsubstituted or substituted (1,3-dioxa-5-cyclohexyloxy) group and an alkyl- or (substituted)amino-sulfonyloxy group at the 3'-position in the other phenyl moiety. They exhibit improved herbicidal effects on various weeds without any adverse phytotoxic effect on crops, e.g. rice seedlings.Type: GrantFiled: July 30, 1980Date of Patent: August 14, 1984Assignee: Ube Industries Ltd.Inventors: Hakobu Sekioka, Mitsuaki Takenaka, Yoshio Kawaguchi, Seiji Takamura, Minoru Nishimura, Masanori Watanabe
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Patent number: 4442337Abstract: A method and system for controlling resistance welding whereby the preferred quality of resistance welding can be ensured automatically during the welding process by controlling the electrode pressure so that the electrode resistance changes in accordance with a reference resistance curve, or by additionally controlling the electrode voltage so that the electrode voltage changes in accordance with a reference voltage curve. The system according to the present invention comprises an electrode voltage sensor, an electrode current sensor, a reference resistance generator, a reference voltage generator, a differential amplifier, a pressure control device, a current controller and so on.Type: GrantFiled: April 21, 1981Date of Patent: April 10, 1984Assignee: Nissan Motor Company, LimitedInventors: Shuji Nakata, Yoshio Kawaguchi, Akira Nishimura
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Patent number: 4434351Abstract: A method and system for determining weld quality in resistance welding in such a manner that acceptance or unacceptance is determined by comparing with their respective reference values the electrode voltage, the electrode current time, the number of electrode voltage pulse signals in excess of the reference value, and the integral of difference between the electrode voltage in excess of a base voltage and the base voltage, independently or simultaneously, in addition to the comparison of the electrode resistance with its reference value. The relatively low-priced system according to the present invention can determine weld quality accurately even when the electrode tips are deformed or crushed so as to form other current path areas.Type: GrantFiled: June 1, 1981Date of Patent: February 28, 1984Assignee: Nissan Motor Company, LimitedInventors: Shuji Nakata, Yoshio Kawaguchi, Akira Nishimura
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Patent number: 4408114Abstract: A system for resistance welding in which the welding voltage between the electrodes is controlled by changing the pressure applied to the electrodes or the firing phase angle of the welding current in accordance with a reference voltage curve or a reference voltage integration curve. The system comprises a voltage sensor, a reference voltage generator, a differential amplifier, and a pressure control device, or a calculating unit for determining an appropriate firing phase angle of the welding current. The system thus improved can ensure a stable, good welding quality, since the welding voltage is always controlled by a series of optimum welding voltages, during the welding process, in accordance with a reference voltage curve with respect to time, preferably in terms of cycles of the welding current.Type: GrantFiled: January 4, 1982Date of Patent: October 4, 1983Assignee: Nissan Motor Company, LimitedInventors: Shuji Nakata, Masahiro Nishikawa, Yoshio Kawaguchi
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Patent number: 4387289Abstract: A system for resistance welding in which the welding voltage between the electrodes is controlled by changing the pressure applied to the electrodes or the firing phase angle of the welding current in accordance with a reference voltage curve or a reference voltage integration curve. The system comprises a voltage sensor, a reference voltage generator, a differential amplifier, and a pressure control device, or a calculating unit for determining an appropriate firing phase angle of the welding current. The system thus improved can ensure a stable, good welding quality, since the welding voltage is always controlled by a series of optimum welding voltages, during the welding process, in accordance with a reference voltage curve with respect to time, preferably in terms of cycles of the welding current.Type: GrantFiled: July 27, 1981Date of Patent: June 7, 1983Assignee: Nissan Motor Company, LimitedInventors: Shuji Nakata, Masahiro Nishikawa, Yoshio Kawaguchi