Patents by Inventor Toshiaki Ozaki
Toshiaki Ozaki 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: 11916808Abstract: A base wireless device includes plural transmission buffers storing plural signals having transmission destinations that are different from each other, a transmission processing unit transmitting the signals to plural remote wireless devices respectively, by transmitting the signals stored in the plural transmission buffers in a predetermined order, regardless of whether or not each transmission has been made successfully, and a storage control unit, wherein when a transmission of a signal stored in one of the transmission buffers has been made successfully, the storage control unit overwrites the one transmission buffer from which the transmission has been made successfully, with another signal to be transmitted to a transmission destination that is different from a transmission destination of a signal stored in a transmission buffer other than the one transmission buffer from which the transmission has been made successfully, among the plural transmission buffers.Type: GrantFiled: May 2, 2022Date of Patent: February 27, 2024Assignee: SMC CORPORATIONInventors: Norimasa Ozaki, Toshiaki Kuwahara
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Patent number: 8304928Abstract: Load type electrical parts incorporated in auxiliary machine modules 164a to 184a are driven by electrical connectors 160a to 180a having communicating units, control units and load driving units mounted on electronic boards. An electronic door control unit 200a connected to a sub bus connected to the electrical connectors 160a to 180a converts the communication protocol of a control signal of the load type electrical parts received from a LAN in a vehicle serving as a main bus of the vehicle to the communication protocol of the sub bus and transmits the protocol converted control signal to the electrical connectors 160a to 180a. Further, sensors or switches in the auxiliary machine modules 164a to 184a output signals to the control units.Type: GrantFiled: April 1, 2004Date of Patent: November 6, 2012Assignee: Yazaki CorporationInventors: Kazumi Nagasawa, Toshiaki Ozaki, Norihito Shimizu
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Patent number: 8170744Abstract: A front electronic equipment system includes a load electrical parts provided at a front portion of a vehicle, a front electrical control unit which receives a control signal for controlling the drive of the load electrical parts through a main bus line of the vehicle, and a drive control unit connected to the front electrical control unit through a sub bus line, converting the control signal into a drive signal, and driving the load electrical parts based on the drive signal. The front electrical control unit converts a communication protocol of the control signal from a communication protocol of the main bus line into a communication protocol of the sub bus line, and transmits the converted control signal received through the main bus line to the drive control unit through the sub bus line.Type: GrantFiled: April 6, 2004Date of Patent: May 1, 2012Assignee: Yazaki CorporationInventors: Kazumi Nagasawa, Toshiaki Ozaki, Norihito Shimizu
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Patent number: 7356714Abstract: An electronic connector connected to a sensor or a switch, and communicating a signal through a common bus includes an I/O unit receiving a signal from the sensor or the switch, a control unit generating a control signal for controlling the driving of a load corresponding to the sensor or the switch according to the signal received from the I/O unit, and a communication unit having a function of decoding the control signal and transmitting the control signal to an equipment connected to the corresponding load through the common bus.Type: GrantFiled: March 4, 2004Date of Patent: April 8, 2008Assignee: Yazaki CorporationInventors: Kazumi Nagasawa, Toshiaki Ozaki, Norihito Shimizu
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Patent number: 7171128Abstract: On a chip carrier, on a printed circuit board or in a pre-amplifier circuit, a resistor or an impedance is connected to either or both of the anode side and the cathode side of a photo detector. A bypass capacitor of bias power supply for photo detector is grounded either directly or via a resistor or an impedance.Type: GrantFiled: August 9, 2002Date of Patent: January 30, 2007Assignee: OpNext Japan, Inc.Inventors: Shuichi Hasegawa, Atsushi Miura, Toshiaki Ozaki, Hironari Matsuda, Hiroki Irie
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Publication number: 20060197378Abstract: Load type electrical parts incorporated in auxiliary machine modules 164a to 184a are driven by electrical connectors 160a to 180a having communicating units, control units and load driving units mounted on electronic boards. An electronic door control unit 200a connected to a sub bus connected to the electrical connectors 160a to 180a converts the communication protocol of a control signal of the load type electrical parts received from a LAN in a vehicle serving as a main bus of the vehicle to the communication protocol of the sub bus and transmits the protocol converted control signal to the electrical connectors 160a to 180a. Further, sensors or switches in the auxiliary machine modules 164a to 184a output signals to the control units.Type: ApplicationFiled: April 1, 2004Publication date: September 7, 2006Inventors: Kazumi Nagasawa, Toshiaki Ozaki, Norihito Shimizu
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Patent number: 6963593Abstract: For preventing an optical axis from shifting due to a heat cycle in a semiconductor laser module, or in a optical transmitter, the semiconductor laser module comprises, a semiconductor laser element, a frame for storing the semiconductor laser element therein, an optical fiber fixing portion being connected to the frame; and a flange being connected to the frame, and having a fixing portion for fixing the frame on a substrate, wherein the flange has a narrow width region between a fixing region, including a foxing portion with the substrate therein, and the frame, and the narrow width region is narrower than width of the fixing region.Type: GrantFiled: July 31, 2003Date of Patent: November 8, 2005Assignee: OpNext Japan, Inc.Inventors: Hiroshi Moriya, Kisho Ashida, Toshiaki Ozaki
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Patent number: 6933067Abstract: A polymer electrolyte fuel cell includes an electrode including a catalyst layer and a diffusion layer. The catalyst layer is divided into a plurality of portions including an upstream portion and a downstream portion along a reactant gas flow direction. The upstream portion of the catalyst layer has a structure for preventing a drying-up of the cell, and the downstream portion of the catalyst layer has a structure for preventing a flooding of the cell. A structure of the diffusion layer also may differ between at the upstream portion and at the downstream portion.Type: GrantFiled: July 25, 2001Date of Patent: August 23, 2005Assignee: Toyota Jidosha Kabushiki KaishaInventors: Tatsuya Kawahara, Katsuhiko Kinoshita, Yoshitaka Kino, Toshiaki Ozaki
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Patent number: 6921604Abstract: A device and a method for simply and accurately evaluating-performance of fuel cells have been provided. Hydrogen gas and carbon monoxide gas are caused to flow into a sample holder where an electrode catalyst sample is laid, and the amount of carbon monoxide gas discharged therefrom is detected. The amount of carbon monoxide gas adsorbed by the electrode catalyst sample is calculated based on the amount of supplied carbon monoxide gas and the amount of detected carbon monoxide gas. The output voltage of a fuel cell is calculated based on a correlation between calculated amounts of carbon monoxide gas adsorbed by the electrode catalyst and output voltages of the fuel cell.Type: GrantFiled: February 17, 2004Date of Patent: July 26, 2005Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hisao Kato, Tatsuya Kawahara, Toshiaki Ozaki
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Patent number: 6917169Abstract: A field effect transistor is provided between the ground and an H bridge circuit for rotating a motor in forward and reverse directions in a manner that the drain of the transistor is grounded and the gate thereof is coupled to a DC power source such as a battery serving as a bias source which supplies electric power to the H bridge circuit. Thus, when the DC power source such as a battery is reversely connected, the field effect transistor normally in an on state is turned off. A controller monitors the source voltage of the field effect transistor, and when the controller detects an excess current, the controller outputs a control signal to the high-side driver to prevent the supply of electric power to the motor.Type: GrantFiled: March 1, 2004Date of Patent: July 12, 2005Assignee: Yazaki CorporationInventors: Kazumi Nagasawa, Toshiaki Ozaki, Norihiro Shimizu
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Patent number: 6887286Abstract: The present invention is directed to a fuel reformer device that produces a hydrogen rich gas from a hydrocarbon and steam. The steam reforming reaction that produces the hydrogen rich gas from the hydrocarbon and steam is endothermic. A known technique supplies heat required for the steam reforming reaction by an exothermic oxidation reaction proceeding in parallel with the steam reforming reaction. This known technique may, however, cause an excessive temperature rise in an area of the vigorous oxidation reaction in the fuel reformer device. A reformer unit 34 including a Cu—Zn catalyst receives a supply of a crude fuel gas containing the air flown through a second fuel supply conduit 64. The crude fuel gas is subjected to the steam reforming reaction and the oxidation reaction proceeding inside the reformer unit 34. A resulting hydrogen rich gaseous fuel is discharged to a third fuel supply conduit 65. The reformer unit 34 includes an upper stream reaction unit 80 and a lower stream reaction unit 81.Type: GrantFiled: July 2, 1999Date of Patent: May 3, 2005Assignee: Toyota Jidosha Kabushiki KaishaInventors: Masayoshi Taki, Seiji Mizuno, Toshiaki Ozaki, Tatsuya Kawahara, Katsuhiko Kinoshita, Yoshimasa Negishi
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Publication number: 20040230320Abstract: An electronic connector connected to a sensor or a switch, and communicating a signal through a common bus includes an I/O unit receiving a signal from the sensor or the switch, a control unit generating a control signal for controlling the driving of a load corresponding to the sensor or the switch according to the signal received from the I/O unit, and a communication unit having a function of decoding the control signal and transmitting the control signal to an equipment connected to the corresponding load through the common bus.Type: ApplicationFiled: March 4, 2004Publication date: November 18, 2004Applicant: YAZAKI CORPORATIONInventors: Kazumi Nagasawa, Toshiaki Ozaki, Norihito Shimizu
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Publication number: 20040217724Abstract: A field effect transistor is provided between the ground and an H bridge circuit for rotating a motor in forward and reverse directions in a manner that the drain of the transistor is grounded and the gate thereof is coupled to a DC power source such as a battery serving as a bias source which supplies electric power to the H bridge circuit. Thus, when the DC power source such as a battery is reversely connected, the field effect transistor normally in an on state is turned off. A controller monitors the source voltage of the field effect transistor, and when the controller detects an excess current, the controller outputs a control signal to the high-side driver to prevent the supply of electric power to the motor.Type: ApplicationFiled: March 1, 2004Publication date: November 4, 2004Applicant: Yazaki CorporationInventors: Kazumi Nagasawa, Toshiaki Ozaki, Norihiro Shimizu
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Publication number: 20040161850Abstract: A device and a method for simply and accurately evaluating-performance of fuel cells have been provided. Hydrogen gas and carbon monoxide gas are caused to flow into a sample holder where an electrode catalyst sample is laid, and the amount of carbon monoxide gas discharged therefrom is detected. The amount of carbon monoxide gas adsorbed by the electrode catalyst sample is calculated based on the amount of supplied carbon monoxide gas and the amount of detected carbon monoxide gas. The output voltage of a fuel cell is calculated based on a correlation between calculated amounts of carbon monoxide gas adsorbed by the electrode catalyst and output voltages of the fuel cell.Type: ApplicationFiled: February 17, 2004Publication date: August 19, 2004Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hisao Kato, Tatsuya Kawahara, Toshiaki Ozaki
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Publication number: 20040066814Abstract: For preventing an optical axis from shifting due to a heat cycle in a semiconductor laser module, or in a optical transmitter, the semiconductor laser module comprises, a semiconductor laser element, a frame for storing the semiconductor laser element therein, an optical fiber fixing portion being connected to the frame; and a flange being connected to the frame, and having a fixing portion for fixing the frame on a substrate, wherein the flange has a narrow width region between a fixing region, including a foxing portion with the substrate therein, and the frame, and the narrow width region is narrower than width of the fixing region.Type: ApplicationFiled: July 31, 2003Publication date: April 8, 2004Applicant: OpNext Japan, Inc.Inventors: Hiroshi Moriya, Kisho Ashida, Toshiaki Ozaki
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Patent number: 6713020Abstract: A device and a method for simply and accurately evaluating performance of fuel cells have been provided. Hydrogen gas and carbon monoxide gas are caused to flow into a sample holder where an electrode catalyst sample is laid, and the amount of carbon monoxide gas discharged therefrom is detected. The amount of carbon monoxide gas adsorbed by the electrode catalyst sample is calculated based on the amount of supplied carbon monoxide gas and the amount of detected carbon monoxide gas. The output voltage of a fuel cell is calculated based on a correlation between calculated amounts of carbon monoxide gas adsorbed by the electrode catalyst and output voltages of the fuel cell.Type: GrantFiled: February 2, 2001Date of Patent: March 30, 2004Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hisao Kato, Tatsuya Kawahara, Toshiaki Ozaki
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Publication number: 20030081297Abstract: On a chip carrier, on a printed circuit board or in a pre-amplifier circuit, a resistor or an impedance is connected to either or both of the anode side and the cathode side of a photo detector. A bypass capacitor of bias power supply for photo detector is grounded either directly or via a resistor or an impedance.Type: ApplicationFiled: August 9, 2002Publication date: May 1, 2003Applicant: OpNext Japan, Inc.Inventors: Shuichi Hasegawa, Atsushi Miura, Toshiaki Ozaki, Hironari Matsuda, Hiroki Irie
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Publication number: 20020031696Abstract: A polymer electrolyte fuel cell includes an electrode including a catalyst layer and a diffusion layer. The catalyst layer is divided into a plurality of portions including an upstream portion and a downstream portion along a reactant gas flow direction. The upstream portion of the catalyst layer has a structure for preventing a drying-up of the cell, and the downstream portion of the catalyst layer has a structure for preventing a flooding of the cell. A structure of the diffusion layer also may differ between at the upstream portion and at the downstream portion.Type: ApplicationFiled: July 25, 2001Publication date: March 14, 2002Inventors: Tatsuya Kawahara, Katsuhiko Kinoshita, Yoshitaka Kino, Toshiaki Ozaki
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Publication number: 20010053468Abstract: A device and a method for simply and accurately evaluating performance of fuel cells have been provided. Hydrogen gas and carbon monoxide gas are caused to flow into a sample holder where an electrode catalyst sample is laid, and the amount of carbon monoxide gas discharged therefrom is detected. The amount of carbon monoxide gas adsorbed by the electrode catalyst sample is calculated based on the amount of supplied carbon monoxide gas and the amount of detected carbon monoxide gas. The output voltage of a fuel cell is calculated based on a correlation between calculated amounts of carbon monoxide gas adsorbed by the electrode catalyst and output voltages of the fuel cell.Type: ApplicationFiled: February 2, 2001Publication date: December 20, 2001Inventors: Hisao Kato, Tatsuya Kawahara, Toshiaki Ozaki
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Patent number: 6280872Abstract: Two electrodes contact an electrolyte membrane on both sides of the electrolyte membrane and each electrode contacts each separator on the other side of the electrode. An electrochemical fuel cell comprises a plurality of unit cells which comprise the electrolyte membrane, the electrode, and the separator. The electrode comprises a catalyst layer and a gas diffusion layer. The gas diffusion layer comprises an inner layer and an outer layer. The catalyst layer contacts the electrolyte membrane. The inner layer is interposed between the catalyst layer and the outer layer. The outer layer of the gas diffusion layer contacts the inner layer on the inner side and the separator on the outer side.Type: GrantFiled: December 10, 1999Date of Patent: August 28, 2001Assignee: Toyota Jidosha Kabushiki KaishaInventors: Toshiaki Ozaki, Tatsuya Kawahara