Patents by Inventor Kenji Mitsuda
Kenji Mitsuda 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: 20230330042Abstract: An oral preparation contains tramadol or a pharmaceutically acceptable salt thereof as an active ingredient and has a low incidence of side effects, such that the blood concentration of unchanged tramadol or an active metabolite thereof, for example, falls within a certain numerical range after administration, so that the incidence of side effects is low while the efficacy is excellent.Type: ApplicationFiled: September 22, 2021Publication date: October 19, 2023Applicant: NIPPON ZOKI PHARMACEUTICAL CO., LTD.Inventors: Tsuyoshi ADACHI, Kenji MITSUDA, Hideshi NAKANO
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Patent number: 10411585Abstract: An inverter system includes an inverter apparatus and a smoothing capacitor charging-power apparatus. The inverter apparatus includes a transformer and an inverter cell. The transformer includes primary windings and secondary windings. Each of the inverter cells includes a converter circuit, a smoothing capacitor, and an inverter circuit. The converter circuit is configured to convert an intermediate alternating-current voltage to a direct-current voltage. The smoothing capacitor is configured to smooth the direct-current voltage. The inverter circuit is configured to at least partially generate a phase voltage of a variable alternating-current voltage from the direct-current voltage smoothed by the smoothing capacitor. Electric power is to be supplied from a second power supply different from a first power supply to the smoothing capacitor charging-power apparatus.Type: GrantFiled: June 8, 2014Date of Patent: September 10, 2019Assignees: KABUSHIKI KAISHA YASKAWA DENKI, YASKAWA AMERICA, INC.Inventors: Taisuke Katayama, Eiji Yamamoto, Kenji Mitsuda, Hiroshi Takagi, Thomas Bryan Sasada
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Patent number: 10018665Abstract: A power conversion apparatus includes a power conversion device connected to a 3-phase AC power source, a first fuse positioned on a first phase of the source between the conversion device and the source, a second fuse positioned on a second phase of the source between the conversion device and the source, a first voltage detection device which detects first voltage between a third phase and the first phase of the source on the conversion device side with respect to the first fuse, a second voltage detection device which detects second voltage between the third and second phases of the source on the conversion device side with respect to the second fuse, and a status detection device connected to the first and second voltage devices such that the status device detects status of the first and second fuses based on comparison between detection result of the first and second voltage.Type: GrantFiled: June 19, 2015Date of Patent: July 10, 2018Assignee: KABUSHIKI KAISHA YASKAWA DENKIInventors: Kenji Mitsuda, Hiroshi Takagi
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Publication number: 20150369852Abstract: A power conversion apparatus includes a power conversion device connected to a 3-phase AC power source, a first fuse positioned on a first phase of the source between the conversion device and the source, a second fuse positioned on a second phase of the source between the conversion device and the source, a first voltage detection device which detects first voltage between a third phase and the first phase of the source on the conversion device side with respect to the first fuse, a second voltage detection device which detects second voltage between the third and second phases of the source on the conversion device side with respect to the second fuse, and a status detection device connected to the first and second voltage devices such that the status device detects status of the first and second fuses based on comparison between detection result of the first and second voltage.Type: ApplicationFiled: June 19, 2015Publication date: December 24, 2015Applicant: KABUSHIKI KAISHA YASKAWA DENKIInventors: Kenji MITSUDA, Hiroshi Takagi
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Publication number: 20150357903Abstract: An inverter system includes an inverter apparatus and a smoothing capacitor charging-power apparatus. The inverter apparatus includes a transformer and an inverter cell. The transformer includes primary windings and secondary windings. Each of the inverter cells includes a converter circuit, a smoothing capacitor, and an inverter circuit. The converter circuit is configured to convert an intermediate alternating-current voltage to a direct-current voltage. The smoothing capacitor is configured to smooth the direct-current voltage. The inverter circuit is configured to at least partially generate a phase voltage of a variable alternating-current voltage from the direct-current voltage smoothed by the smoothing capacitor. Electric power is to be supplied from a second power supply different from a first power supply to the smoothing capacitor charging-power apparatus.Type: ApplicationFiled: June 8, 2014Publication date: December 10, 2015Applicants: YASKAWA AMERICA, INC., KABUSHIKI KAISHA YASKAWA DENKIInventors: Taisuke KATAYAMA, Eiji YAMAMOTO, Kenji MITSUDA, Hiroshi TAKAGI, Thomas Bryan SASADA
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Patent number: 8976553Abstract: A power conversion device according to an aspect of an embodiment includes a power conversion unit and a control unit. The power conversion unit includes N (N is an integer number not less than two) power converters that output voltages on the basis of base signals having the same period and phase differences equivalent to ½N of the period of the base signal. The control unit controls the N power converters by using ½ of the period of the base signal as a control period and shifts each of control timings of the N power converters by the ½N of the period of the base signal.Type: GrantFiled: May 16, 2012Date of Patent: March 10, 2015Assignee: Kabushiki Kaisha Yaskawa DenkiInventors: Takashi Tanaka, Taisuke Katayama, Kenji Mitsuda
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Publication number: 20130107589Abstract: A power conversion device according to an aspect of an embodiment includes a power conversion unit and a control unit. The power conversion unit includes N (N is an integer number not less than two) power converters that output voltages on the basis of base signals having the same period and phase differences equivalent to ½N of the period of the base signal. The control unit controls the N power converters by using ½ of the period of the base signal as a control period and shifts each of control timings of the N power converters by the ½N of the period of the base signal.Type: ApplicationFiled: May 16, 2012Publication date: May 2, 2013Applicant: KABUSHIKI KAISHA YASKAWA DENKIInventors: Takashi Tanaka, Taisuke Katayama, Kenji Mitsuda
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Patent number: 8324261Abstract: The present invention is to provide a novel compound which is useful as a pharmaceutical agent such as an analgesic. The present invention is to provide the novel histidine derivative having an excellent analgesic action and the like. The compound of the present invention has a very high intermigration into the blood upon oral administration and is very useful as a pharmaceutical agent, especially an analgesic for the treatment of acute or chronic pain diseases and of neuropathic pain diseases.Type: GrantFiled: July 18, 2008Date of Patent: December 4, 2012Assignee: Nippon Zoki Pharmaceutical Co., Ltd.Inventors: Yoshitaka Nakazawa, Kenji Mitsuda, Tomohiro Ookubo, Teppei Seguchi, Hiroyoshi Nanba
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Publication number: 20100152459Abstract: The present invention is to provide a novel compound which is useful as a pharmaceutical agent such as an analgesic. The present invention is to provide the novel histidine derivative having an excellent analgesic action and the like. The compound of the present invention has a very high intermigration into the blood upon oral administration and is very useful as a pharmaceutical agent, especially an analgesic for the treatment of acute or chronic pain diseases and of neuropathic pain diseases.Type: ApplicationFiled: July 18, 2008Publication date: June 17, 2010Applicant: NIPPON ZOKI PHARMACEUTICAL CO., LTD.Inventors: Yoshitaka Nakazawa, Kenji Mitsuda, Tomohiro Ookubo, Teppei Seguchi, Hiroyoshi Nanba