Patents by Inventor Takafumi Uemura
Takafumi Uemura 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).
-
Publication number: 20240069478Abstract: A sheet type discrimination device includes: a first light source unit that irradiates a sheet with light having a first wavelength and light having a second wavelength; a detection unit that detects light from the sheet and acquires a detection value based on the light; and a control unit that derives a determination result of a type of the sheet, wherein the first light source unit and the detection unit are located on a same side with respect to the sheet, the detection value includes: a first detection value; and a second detection value, and the control unit discriminates first-type recycled paper by first processing using the first detection value, and discriminates second-type recycled paper different from the first-type recycled paper by second processing using the second detection value.Type: ApplicationFiled: July 27, 2023Publication date: February 29, 2024Inventors: Daisuke KOBAYASHI, Shohei DOKIYA, Makoto OOKI, Takafumi YUASA, Takaki UEMURA, Masahiko TAKAHASHI
-
Patent number: 11883200Abstract: A biosignal measurement apparatus is used by being affixed on a living body. The apparatus includes an affixed part that is a sheet, in which a signal-acquiring section of multiple electrodes and wiring connected to each of the electrodes are formed, and which can be freely expanded, contracted and bent and is adhesive; and a substrate that is connected to the wiring and on which a signal-processing circuit for wirelessly transmitting biosignals obtained through the wiring is mounted. The signal-acquiring section is exposed on the surface of the affixed part and the affixed part and the substrate are stacked so that the back surface of the affixed part faces the substrate.Type: GrantFiled: January 28, 2022Date of Patent: January 30, 2024Assignee: Osaka UniversityInventors: Tsuyoshi Sekitani, Takafumi Uemura, Teppei Araki, Shusuke Yoshimoto
-
Patent number: 11793083Abstract: An object of the present invention is to provide a vibration sensor in which the frequency dependence of the output is small. The present invention provides a vibration sensor 1 comprising: a support 2; an organic piezoelectric material 3 deformably disposed in or on the support 2; and an electrode 4 for extracting an electrical signal generated by deformation of the organic piezoelectric material 3, the electrode 4 being formed on the organic piezoelectric material 3, the organic piezoelectric material 3 comprising a copolymer of vinylidene fluoride and one or more monomers copolymerizable with vinylidene fluoride.Type: GrantFiled: July 5, 2018Date of Patent: October 17, 2023Assignees: DAIKIN INDUSTRIES, LTD., OSAKA UNIVERSITYInventors: Shinya Bitou, Tetsuhiro Kodani, Saori Sakami, Takashi Kanemura, Tsuyoshi Sekitani, Takafumi Uemura, Shusuke Yoshimoto
-
Patent number: 11786162Abstract: Provided is an electrode sheet allowing easy connection of a wiring that is extended, when required, to a measurement position on a living body. The electrode sheet (main sheet (1), auxiliary sheet (10)) includes a sheet-shaped flexible substrate (2, 11), wirings (3, 12) formed on the flexible substrate (2, 11), electrodes (5, 14) formed on the flexible substrate (2, 11) and electrically connected to the wirings (3, 12), and an insulating layer (4, 13) laid on the flexible substrate (2, 11) in such a manner that the wirings (3, 12) are overlaid with the insulating layer (4, 13) while the electrodes (5, 14) are exposed. The electrodes (5, 14) are formed of a conductive material in which conductive particles are dispersed in a thermoplastic resin.Type: GrantFiled: August 17, 2017Date of Patent: October 17, 2023Assignees: Osaka University, Nippon Mektron, Ltd.Inventors: Tsuyoshi Sekitani, Takafumi Uemura, Teppei Araki, Shusuke Yoshimoto, Masayuki Iwase, Akio Yoshida, Hideki Satake
-
Patent number: 11707219Abstract: An electrode sheet is capable of suppressing an influence of noise that is applied on a wire, and a biological signal measuring device uses the electrode sheet. The electrode sheet is provided with a sheet, a biological signal receiving electrode formed at the sheet and exposed from the sheet, a biological signal amplifier formed at the sheet, an interface part for connection to an external biological signal processing unit, a first wire that connects the biological signal receiving electrode and an input part of the biological signal amplifier to each other, and a second wire that connects the interface part and an output part of the biological signal amplifier to each other.Type: GrantFiled: May 25, 2017Date of Patent: July 25, 2023Assignee: Osaka UniversityInventors: Tsuyoshi Sekitani, Takafumi Uemura, Teppei Araki, Shusuke Yoshimoto
-
Publication number: 20230213566Abstract: A measuring device facilitates equipment calibration. A measuring device for measuring noise contained in equipment having a prescribed resistance value is provided with a first voltage-dividing circuit connected to a direct-current power source, a second voltage-dividing circuit connected in parallel with the first voltage-dividing circuit , and a measuring unit which measures a first voltage-divided voltage output from the first voltage-dividing circuit, and a second voltage-divided voltage output from the second voltage-dividing circuit, a calculating unit which calculates the difference between the measured first voltage-divided voltage and second voltage-divided voltage, and an output unit which outputs the calculated result, wherein: the first voltage-dividing circuit outputs the first voltage-divided voltage from the equipment and a first resistor, connected in series.Type: ApplicationFiled: June 1, 2021Publication date: July 6, 2023Inventors: Tsuyoshi SEKITANI, Takafumi UEMURA, Shuichi TSURUTA
-
Patent number: 11509123Abstract: A wiring sheet includes one or more carbon wires each of which is one of a signal line and a power supply line, and which are conductors including carbon as a main material and have flexibility; and an insulation sheet that encloses substantially an entirety of the one or more carbon wires, includes an electrical insulator as a main material, and has flexibility.Type: GrantFiled: July 25, 2017Date of Patent: November 22, 2022Assignee: OSAKA UNIVERSITYInventors: Tsuyoshi Sekitani, Takafumi Uemura, Shusuke Yoshimoto, Teppei Araki, Yuki Noda, Takayasu Sakurai, Tokihiko Mori, Makoto Takamiya
-
Publication number: 20220142577Abstract: A biosignal measurement apparatus is used by being affixed on a living body. The apparatus includes an affixed part that is a sheet, in which a signal-acquiring section of multiple electrodes and wiring connected to each of the electrodes are formed, and which can be freely expanded, contracted and bent and is adhesive; and a substrate that is connected to the wiring and on which a signal-processing circuit for wirelessly transmitting biosignals obtained through the wiring is mounted. The signal-acquiring section is exposed on the surface of the affixed part and the affixed part and the substrate are stacked so that the back surface of the affixed part faces the substrate.Type: ApplicationFiled: January 28, 2022Publication date: May 12, 2022Inventors: Tsuyoshi SEKITANI, Takafumi UEMURA, Teppei ARAKI, Shusuke YOSHIMOTO
-
Patent number: 11234645Abstract: A biosignal measurement apparatus that is used by being affixed on a living body is provided with: an affixed part that is a sheet, in which a signal-acquiring section of multiple electrodes and wiring connected to each of the electrodes are formed, and which can be freely expanded, contracted and bent and is adhesive; and a substrate that is connected to the wiring and on which a signal-processing circuit for wirelessly transmitting biosignals obtained through the wiring is mounted. The signal-acquiring section is exposed on the surface of the affixed part and the affixed part and the substrate are stacked so that the back surface of the affixed part faces the substrate.Type: GrantFiled: August 5, 2016Date of Patent: February 1, 2022Assignee: OSAKA UNIVERSITYInventors: Tsuyoshi Sekitani, Takafumi Uemura, Teppei Araki, Shusuke Yoshimoto
-
Patent number: 11209320Abstract: A temperature sensor that includes an organic-inorganic composite negative temperature coefficient thermistor and a transistor. The organic-inorganic composite negative temperature coefficient thermistor includes a thermistor layer which includes spinel-type semiconductor ceramic composition powder containing Mn, Ni and Fe and an organic polymer component, and a pair of electrode layers. The semiconductor ceramic composition powder has a molar ratio of Mn to Ni of 85/15?Mn/Ni?65/35 and a Fe content of 30 parts by mole or less when a total molar amount of Mn and Ni is regarded as 100 parts by mole, and has a peak with a local maximum value of around 29° to 31° in its X-ray diffraction pattern, a half width of which peak is 0.15 or more. The transistor is electrically connected with either one of the pair of electrode layers.Type: GrantFiled: July 11, 2019Date of Patent: December 28, 2021Assignees: MURATA MANUFACTURING CO., LTD., OSAKA UNIVERSITYInventors: Yasunori Hioki, Tsuyoshi Sekitani, Takafumi Uemura, Tomoaki Onoue
-
Publication number: 20210328417Abstract: A wiring sheet includes one or more carbon wires each of which is one of a signal line and a power supply line, and which are conductors including carbon as a main material and have flexibility; and an insulation sheet that encloses substantially an entirety of the one or more carbon wires, includes an electrical insulator as a main material, and has flexibility.Type: ApplicationFiled: July 25, 2017Publication date: October 21, 2021Inventors: Tsuyoshi SEKITANI, Takafumi UEMURA, Shusuke YOSHIMOTO, Teppei ARAKI, Yuki NODA, Takayasu SAKURAI, Tokihiko MORI, Makoto TAKAMIYA
-
Publication number: 20200144481Abstract: An object of the present invention is to provide a vibration sensor in which the frequency dependence of the output is small. The present invention provides a vibration sensor 1 comprising: a support 2; an organic piezoelectric material 3 deformably disposed in or on the support 2; and an electrode 4 for extracting an electrical signal generated by deformation of the organic piezoelectric material 3, the electrode 4 being formed on the organic piezoelectric material 3, the organic piezoelectric material 3 comprising a copolymer of vinylidene fluoride and one or more monomers copolymerizable with vinylidene fluoride.Type: ApplicationFiled: July 5, 2018Publication date: May 7, 2020Applicants: DAIKIN INDUSTRIES, LTD., OSAKA UNIVERSITYInventors: Shinya BITOU, Tetsuhiro KODANI, Saori SAKAMI, Takashi KANEMURA, Tsuyoshi SEKITANI, Takafumi UEMURA, Shusuke YOSHIMOTO
-
Publication number: 20190331536Abstract: A temperature sensor that includes an organic-inorganic composite negative temperature coefficient thermistor and a transistor. The organic-inorganic composite negative temperature coefficient thermistor includes a thermistor layer which includes spinel-type semiconductor ceramic composition powder containing Mn, Ni and Fe and an organic polymer component, and a pair of electrode layers. The semiconductor ceramic composition powder has a molar ratio of Mn to Ni of 85/15?Mn/Ni?65/35 and a Fe content of 30 parts by mole or less when a total molar amount of Mn and Ni is regarded as 100 parts by mole, and has a peak with a local maximum value of around 29° to 31° in its X-ray diffraction pattern, a half width of which peak is 0.15 or more. The transistor is electrically connected with either one of the pair of electrode layers.Type: ApplicationFiled: July 11, 2019Publication date: October 31, 2019Inventors: Yasunori Hioki, Tsuyoshi Sekitani, Takafumi Uemura, Tomoaki Onoue
-
Publication number: 20190290158Abstract: An electrode sheet is capable of suppressing an influence of noise that is applied on a wire, and a biological signal measuring device uses the electrode sheet. The electrode sheet is provided with a sheet, a biological signal receiving electrode formed at the sheet and exposed from the sheet, a biological signal amplifier formed at the sheet, an interface part for connection to an external biological signal processing unit, a first wire that connects the biological signal receiving electrode and an input part of the biological signal amplifier to each other, and a second wire that connects the interface part and an output part of the biological signal amplifier to each other.Type: ApplicationFiled: May 25, 2017Publication date: September 26, 2019Inventors: Tsuyoshi SEKITANI, Takafumi UEMURA, Teppei ARAKI, Shusuke YOSHIMOTO
-
Publication number: 20190216352Abstract: Provided is an electrode sheet allowing easy connection of a wiring that is extended, when required, to a measurement position on a living body. The electrode sheet (main sheet (1), auxiliary sheet (10)) includes a sheet-shaped flexible substrate (2, 11), wirings (3, 12) formed on the flexible substrate (2, 11), electrodes (5, 14) formed on the flexible substrate (2, 11) and electrically connected to the wirings (3, 12), and an insulating layer (4, 13) laid on the flexible substrate (2, 11) in such a manner that the wirings (3, 12) are overlaid with the insulating layer (4, 13) while the electrodes (5, 14) are exposed. The electrodes (5, 14) are formed of a conductive material in which conductive particles are dispersed in a thermoplastic resin.Type: ApplicationFiled: August 17, 2017Publication date: July 18, 2019Inventors: Tsuyoshi SEKITANI, Takafumi UEMURA, Teppei ARAKI, Shusuke YOSHIMOTO, Masayuki IWASE, Akio YOSHIDA, Hideki SATAKE
-
Publication number: 20190029595Abstract: A biosignal measurement apparatus (10) that is used by being affixed on a living body is provided with: an affixed part (115) that is a sheet, in which a signal-acquiring section (110) of multiple electrodes and wiring connected to each of the electrodes are formed, and which can be freely expanded, contracted and bent and is adhesive; and a substrate (500) that is connected to the wiring and on which a signal-processing circuit for wirelessly transmitting biosignals obtained through the wiring is mounted. The signal-acquiring section (110) is exposed on the surface of the affixed part (115) and the affixed part (115) and the substrate (500) are stacked so that the back surface of the affixed part (115) faces the substrate.Type: ApplicationFiled: August 5, 2016Publication date: January 31, 2019Inventors: Tsuyoshi SEKITANI, Takafumi UEMURA, Teppei ARAKI, Shuusuke YOSHIMOTO
-
Patent number: 9379341Abstract: An organic thin film transistor includes an insulating substrate (1), gate electrodes (2, 4), a gate insulating film (3), an organic semiconductor film (5), and a source electrode (6) and a drain electrode (7). The gate electrodes include a main gate electrode (2) that is disposed in a region opposed to a channel region between the source electrode and the drain electrode in the organic semiconductor film, and a pair of auxiliary gate electrodes (4) that are disposed in respective regions opposed to the source electrode and the drain electrode on the two sides of the main gate electrode. The main gate electrode and the auxiliary gate electrodes are electrically separated from each other. The contact resistance between the source and drain electrodes and the organic semiconductor film is controlled so as to be at a low level even when the organic thin film transistor is driven in a low voltage region, and the operation frequency can be sufficiently enhanced due to the channel length being shortened.Type: GrantFiled: August 19, 2013Date of Patent: June 28, 2016Assignee: Osaka UniversityInventors: Junichi Takeya, Takafumi Uemura
-
Patent number: 9153789Abstract: An organic transistor is provided with: an insulating substrate; a pair of insulating pedestals (2, 3) that are arranged spaced apart from each other on the substrate and that form respectively raised flat surfaces; a source electrode (4) provided on the raised flat surface formed on one of the pedestals; a drain electrode (5) provided on the raised flat surface formed on the other pedestal; a gate electrode (6) provided on the substrate between the pair of pedestals; and an organic semiconductor layer (7) arranged in contact with the upper surfaces of the source electrode and the drain electrode. The gate electrode and the lower surface of the organic semiconductor layer vertically oppose each other across a gap region (8), and the side surfaces of the pedestals facing the gap region are shaped such that the lower side edges recede apart from the gate electrode with respect to the upper side edges.Type: GrantFiled: July 18, 2012Date of Patent: October 6, 2015Assignee: OSAKA UNIVERSITYInventors: Junichi Takeya, Takafumi Uemura, Mayumi Uno
-
Publication number: 20150188063Abstract: An organic thin film transistor includes an insulating substrate (1), gate electrodes (2, 4), a gate insulating film (3), an organic semiconductor film (5), and a source electrode (6) and a drain electrode (7). The gate electrodes include a main gate electrode (2) that is disposed in a region opposed to a channel region between the source electrode and the drain electrode in the organic semiconductor film, and a pair of auxiliary gate electrodes (4) that are disposed in respective regions opposed to the source electrode and the drain electrode on the two sides of the main gate electrode. The main gate electrode and the auxiliary gate electrodes are electrically separated from each other. The contact resistance between the source and drain electrodes and the organic semiconductor film is controlled so as to be at a low level even when the organic thin film transistor is driven in a low voltage region, and the operation frequency can be sufficiently enhanced due to the channel length being shortened.Type: ApplicationFiled: August 19, 2013Publication date: July 2, 2015Inventors: Junichi Takeya, Takafumi Uemura
-
Patent number: 8921152Abstract: A raw material solution containing an organic semiconductor material and a solvent is supplied onto a substrate 1 and dried, forming an organic semiconductor film 4. A contact member 7 is used, which is provided with multiple contact faces 6a for contacting the raw material solution. The contact member is positioned such that the contact faces have a certain relationship with the surface of the substrate, and multiple droplets 3 of the raw material solution is formed on the substrate, thereby establishing a droplet-retaining state, in which the contact faces retain the respective droplets. The solvent is evaporated to form organic semiconductor films at the locations on the surface of the substrate that correspond to the multiple contact faces. The method can be performed with simple solution processes and can produce organic semiconductor films of high charge mobility.Type: GrantFiled: August 26, 2010Date of Patent: December 30, 2014Assignee: Osaka UniversityInventors: Junichi Takeya, Takafumi Uemura