Patents by Inventor Yoshikazu Ikuta
Yoshikazu Ikuta 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: 20220251519Abstract: A concentration membrane for use in concentrating biological particles, including: a hydrophilic composite porous membrane including: a porous substrate; and a hydrophilic resin with which at least one main surface and inner surfaces of pores of the porous substrate are coated, the hydrophilic composite porous membrane having a ratio t/x of a membrane thickness t (m) to an average pore diameter x (m), as measured with a perm porometer, of from 50 to 630.Type: ApplicationFiled: January 28, 2020Publication date: August 11, 2022Applicants: TEIJIN LIMITED, VISGENE, LTD.Inventors: Mami NAMBU, Yoshikazu IKUTA, Yu NAGAO, Kunihiro KAIHATSU, Ikuko YUMEN, Katsuya OGATA, Daisuke AOKI
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Patent number: 11380596Abstract: A semiconductor test apparatus includes: a power supply; a high-voltage wire connecting high-voltage terminals of a plurality of semiconductor devices which are objects to be tested to a high-voltage side of the power supply; a low-voltage wire connecting low-voltage terminals of the semiconductor devices to a low-voltage side of the power supply; first switches connected in series to the semiconductor devices respectively, each of the first switches having one end connected to the low-voltage side of the power supply via the low-voltage wire and other end connected to the low-voltage terminal; second switches connected to the semiconductor devices respectively, each of the second switches having one end connected to the high-voltage terminal and other end connected to the low-voltage terminal; and a control circuit controlling the first switches and the second switches.Type: GrantFiled: April 9, 2020Date of Patent: July 5, 2022Assignee: Mitsubishi Electric CorporationInventors: Yuji Ebiike, Takaya Noguchi, Yoshinori Ito, Yoshikazu Ikuta, Koichi Takayama
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Publication number: 20220161200Abstract: One embodiment of the present invention provides a hydrophilic composite porous membrane including: a polyolefin microporous membrane, and an olefin/vinyl alcohol-based resin with which at least one main surface and inner surfaces of pores of the polyolefin microporous membrane are coated, in which a ratio t/x of a membrane thickness t (?m) to an average pore diameter x (?m), as measured with a perm porometer, is from 50 to 630.Type: ApplicationFiled: January 28, 2020Publication date: May 26, 2022Applicant: TEIJIN LIMITEDInventors: Mami NAMBU, Yoshikazu IKUTA, Yu NAGAO
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Publication number: 20210402357Abstract: An embodiment of the present invention provides a polyolefin microporous membrane, including: a first porous layer containing a polyolefin and having a structure including a first rod-shaped crystal extending in one direction and plural first plate-shaped crystals arranged in a separated state and intersecting the first rod-shaped crystal, and a second porous layer containing a polyolefin and having a structure including a second rod-shaped crystal extending in another direction intersecting the one direction and plural second plate-shaped crystals arranged in a separated state and intersecting the second rod-shaped crystal.Type: ApplicationFiled: October 29, 2019Publication date: December 30, 2021Applicant: Teijin LimitedInventors: Yoshikazu IKUTA, Koji FURUYA, Takao OONO
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Publication number: 20210308633Abstract: The present disclosure provides a substrate for a liquid filter, including: a polyolefin microporous membrane, in which a mean flow pore size in a pore size distribution of the polyolefin microporous membrane measured by a half dry method according to gas-liquid phase substitution is from 1 nm to 50 nm, a calcium content in the polyolefin microporous membrane is 2,000 ppb or less, and a ratio of a tensile elongation in a longitudinal direction (MD) to a tensile elongation in a width direction (TD) perpendicular to the longitudinal direction (MD/TD tensile elongation ratio) of the polyolefin microporous membrane is from 0.47 to less than 0.96 or from more than 1.25 to 7.Type: ApplicationFiled: July 23, 2019Publication date: October 7, 2021Applicant: TEIJIN LIMITEDInventors: Ayumi IWAI, Koji FURUYA, Yu NAGAO, Yoshikazu IKUTA
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Publication number: 20210098314Abstract: A semiconductor test apparatus includes: a power supply; a high-voltage wire connecting high-voltage terminals of a plurality of semiconductor devices which are objects to be tested to a high-voltage side of the power supply; a low-voltage wire connecting low-voltage terminals of the semiconductor devices to a low-voltage side of the power supply; first switches connected in series to the semiconductor devices respectively, each of the first switches having one end connected to the low-voltage side of the power supply via the low-voltage wire and other end connected to the low-voltage terminal; second switches connected to the semiconductor devices respectively, each of the second switches having one end connected to the high-voltage terminal and other end connected to the low-voltage terminal; and a control circuit controlling the first switches and the second switches.Type: ApplicationFiled: April 9, 2020Publication date: April 1, 2021Applicant: Mitsubishi Electric CorporationInventors: Yuji EBIIKE, Takaya NOGUCHI, Yoshinori ITO, Yoshikazu IKUTA, Koichi TAKAYAMA
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Publication number: 20200407866Abstract: Provided is a plating diaphragm used for a plating method including disposing the plating diaphragm between an anode and a substrate that is a cathode, applying a voltage between the anode and the substrate, in a state in which a surface of the substrate is in contact with the plating diaphragm, to reduce metal ions contained in the plating diaphragm, and depositing a metal derived from the metal ions on the surface of the substrate, to form a metal film on the surface of the substrate, the plating diaphragm containing a base made of a polyolefin porous membrane, in a case in which pure water is dropped on a surface of the plating diaphragm, a contact angle ? between a droplet of the pure water and the surface of the plating diaphragm after one second has passed since landing of the droplet of the pure water on the surface is from 0° to 90°, and a tensile breaking strength is from 11 MPa to 300 MPa.Type: ApplicationFiled: June 25, 2020Publication date: December 31, 2020Applicants: TEIJIN LIMITED, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yoshikazu IKUTA, Yu NAGAO, Hirofumi IISAKA
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Patent number: 8389849Abstract: A solar battery panel wherein cracking of solar battery cells can be reduced without reducing the power generating capacity per unit area. The solar battery panel consists of a plurality of solar battery cells (1) connected in series by connecting surface electrode tabs (104) to rear electrode tabs (105). In the solar battery panel, a tab-to-tab connecting portion (107) and a tab-to-cell connecting portion (106) are arranged via a gap (108) in the solar battery cell arrangement direction (162) without these portions overlapping each other. One end portion (107a) of the tab-to-tab connecting portion (107) exists within a region of a non-light receiving surface (3).Type: GrantFiled: June 2, 2008Date of Patent: March 5, 2013Assignee: Mitsubishi Electric CorporationInventors: Daisuke Echizenya, Masashi Nakamura, Junichi Yasuda, Teruto Miura, Yoshikazu Ikuta
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Publication number: 20110146745Abstract: A solar battery panel wherein cracking of solar battery cells can be reduced without reducing the power generating capacity per unit area. The solar battery panel consists of a plurality of solar battery cells (1) connected in series by connecting surface electrode tabs (104) to rear electrode tabs (105). In the solar battery panel, a tab-to-tab connecting portion (107) and a tab-to-cell connecting portion (106) are arranged via a gap (108) in the solar battery cell arrangement direction (162) without these portions overlapping each other. One end portion (107a) of the tab-to-tab connecting portion (107) exists within a region of a non-light receiving surface (3).Type: ApplicationFiled: June 2, 2008Publication date: June 23, 2011Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Daisuke Echizenya, Masashi Nakamura, Junichi Yasuda, Teruto Miura, Yoshikazu Ikuta
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Patent number: 6593921Abstract: With the prior art image-adjusting system for a liquid crystal display, flicker is adjusted by operator's visual examination and so human factors vary the potential-adjusting value applied to the common electrode. The invention provides an image-adjusting system and method free of this problem. The image-adjusting method starts with placing optical sensors opposite to a given location on a liquid crystal display. The output waveform from the optical sensors is observed on an oscilloscope in synchronism with the vertical synchronizing signal that is synchronized to odd frames or even frames. The potential applied to the common electrode of the liquid crystal display is shifted upward from the optimum potential to observe a first waveform. The potential on the common electrode is shifted downward from the optimum potential to observe a second waveform.Type: GrantFiled: January 16, 2001Date of Patent: July 15, 2003Assignees: Kabushiki Kaisha Advanced Display, Mitsubishi Denki Kabushiki KaishaInventors: Kunifumi Nakanishi, Shuji Nishizaki, Akitoshi Miyaoka, Yoshimi Kinoshita, Yoshikazu Ikuta
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Publication number: 20010015725Abstract: With the prior art image-adjusting system for a liquid crystal display, flicker is adjusted by operator's visual examination and so human factors vary the potential-adjusting value applied to the common electrode. The invention provides an image-adjusting system and method free of this problem. The image-adjusting method starts with placing optical sensors opposite to a given location on a liquid crystal display. The output waveform from the optical sensors is observed on an oscilloscope in synchronism with the vertical synchronizing signal that is synchronized to odd frames or even frames. The potential applied to the common electrode of the liquid crystal display is shifted upward from the optimum potential to observe a first waveform. The potential on the common electrode is shifted downward from the optimum potential to observe a second waveform.Type: ApplicationFiled: January 16, 2001Publication date: August 23, 2001Inventors: Kunifumi Nakanishi, Shuji Nishizaki, Akitoshi Miyaoka, Yoshimi Kinoshita, Yoshikazu Ikuta