Patents by Inventor Takeshi Takarada
Takeshi Takarada 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: 20230257686Abstract: The present invention is to provide a method for producing a cartilage tissue which comprises a step of providing a substrate for producing cell aggregates provided with a plurality of spots comprising a copolymer containing recurring units derived from monomers represented by the following formulae (I) and (II): [wherein Ua1, Ua, Ra1, Ra2 and Rb are as described in the specification and claims] on a substrate having an ability to suppress adhesion of cells; a step of seeding human cartilage progenitor cells which are positive for PRRX1 protein and derived from pluripotent stem cells on the substrate; a step of producing cell aggregates by culturing the cells; and a step of culturing the aggregates to produce a cartilage tissue.Type: ApplicationFiled: July 1, 2021Publication date: August 17, 2023Applicants: NATIONAL UNIVERSITY CORPORATION OKAYAMA UNIVERSITY, KAKE EDUCATIONAL INSTITUTION, NISSAN CHEMICAL CORPORATIONInventors: Takeshi TAKARADA, Ryosuke IWAI, Kohei SUZUKI, Natsuki FUKASAWA
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Publication number: 20220372443Abstract: The present invention provides a limb bud mesenchymal cell population, which is derived from mammalian lateral plate mesoderm cells, and is PRRX1 protein-positive.Type: ApplicationFiled: September 18, 2020Publication date: November 24, 2022Applicant: NATIONAL UNIVERSITY CORPORATION OKAYAMA UNIVERSITYInventors: Takeshi TAKARADA, Daisuke YAMADA, Tomoka TAKAO, Junya TOGUCHIDA, Hiroyuki YOSHITOMI
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Publication number: 20190246471Abstract: A light-emitting module includes a first LED, a second LED connected in parallel with the first LED, and a constant voltage circuit connected in series with the second LED and in parallel with the first LED. The constant voltage circuit maintains a voltage between one end and the other end at a constant voltage. The first LED and the second LED have the same VF characteristics.Type: ApplicationFiled: January 7, 2019Publication date: August 8, 2019Inventor: TAKESHI TAKARADA
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Patent number: 9204513Abstract: An LED driver circuit includes light-element lines, a general purpose LED driving circuit that controls a current value, and current compensation lines respectively connected to the light-element lines. Each of the current compensation lines is provided with a fixed current source and a switch, and the switch switches an open/closed state of the current compensation line.Type: GrantFiled: October 2, 2013Date of Patent: December 1, 2015Assignee: SHARP KABUSHIKI KAISHAInventor: Takeshi Takarada
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Publication number: 20150282271Abstract: An LED driver circuit includes light-element lines, a general purpose LED driving circuit that controls a current value, and current compensation lines respectively connected to the light-element lines. Each of the current compensation lines is provided with a fixed current source and a switch, and the switch switches an open/closed state of the current compensation line.Type: ApplicationFiled: October 2, 2013Publication date: October 1, 2015Applicant: Sharp Kabushiki KaishaInventor: Takeshi Takarada
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Patent number: 6509895Abstract: A drive circuit for a display device supplying a plurality of gray-scale voltages to the display device, based on externally supplied digital video signal data, includes: a plurality of gray-scale power supplies, a plurality of drive power supplies, a unit for forming a first part of the plurality of gray-scale voltages using the gray-scale voltage power supplies, and a unit for forming a second part of the plurality of gray-scale voltages using the drive power supplies.Type: GrantFiled: July 30, 2001Date of Patent: January 21, 2003Assignee: Sharp Kabushiki KaishaInventors: Toshihiro Yanagi, Hisao Okada, Tadatsugu Nishitani, Yuji Yamamoto, Takeshi Takarada
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Publication number: 20020018059Abstract: A drive circuit for a display device supplying a plurality of gray-scale voltages to the display device, based on externally supplied digital video signal data, includes: a plurality of gray-scale power supplies, a plurality of drive power supplies, a unit for forming a first part of the plurality of gray-scale voltages using the gray-scale voltage power supplies, and a unit for forming a second part of the plurality of gray-scale voltages using the drive power supplies.Type: ApplicationFiled: July 30, 2001Publication date: February 14, 2002Applicant: Sharp Kabushiki KaishaInventors: Toshihiro Yanagi, Hisao Okada, Tadatsugu Nishitani, Yuji Yamamoto, Takeshi Takarada
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Patent number: 6310616Abstract: A drive circuit for a display device supplying a plurality of gray-scale voltages to the display device, based on externally supplied digital video signal data, includes: a plurality of gray-scale power supplies, a plurality of drive power supplies, a unit for forming a first part of the plurality of gray-scale voltages using the gray-scale voltage power supplies, and a unit for forming a second part of the plurality of gray-scale voltages using the drive power supplies.Type: GrantFiled: January 21, 1999Date of Patent: October 30, 2001Assignee: Sharp Kabushiki KaishaInventors: Toshihiro Yanagi, Hisao Okada, Tadatsugu Nishitani, Yuji Yamamoto, Takeshi Takarada
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Patent number: 5986648Abstract: The display driving device of the invention has a display driver for driving a display device by using image data to perform a display. The display driving device includes: a time-series data generating section for arranging division data obtained by dividing the image data in a time-series manner, to generate time-series data; and transmission lines provided between the time-series data generating section and the display driver through which the time-series data is transmitted from the time-series data generating section. When the display area of the display device is divided into a plurality of display areas, a plurality of display drivers are provided.Type: GrantFiled: December 19, 1997Date of Patent: November 16, 1999Assignee: Sharp Kabushiki KaishaInventors: Hisao Okada, Yuji Yamamoto, Takeshi Takarada
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Patent number: 5929847Abstract: A drive circuit for a display device supplying a plurality of gray-scale voltages to the display device, based on externally supplied digital video signal data, includes: a plurality of gray-scale power supplies, a plurality of drive power supplies, a unit for forming a first part of the plurality of gray-scale voltages using the gray-scale voltage power supplies, and a unit for forming a second part of the plurality of gray-scale voltages using the drive power supplies.Type: GrantFiled: February 9, 1994Date of Patent: July 27, 1999Assignee: Sharp Kabushiki KaishaInventors: Toshihiro Yanagi, Hisao Okada, Tadatsugu Nishitani, Yuji Yamamoto, Takeshi Takarada
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Patent number: 5734378Abstract: The display driving device of the invention has a display driver for driving a display device by using image data to perform a display. The display driving device includes: a time-series data generating section for arranging division data obtained by dividing the image data in a time-series manner, to generate time-series data; and transmission lines provided between the time-series data generating section and the display driver through which the time-series data is transmitted from the time-series data generating section. When the display area of the display device is divided into a plurality of display areas, a plurality of display drivers are provided.Type: GrantFiled: October 21, 1994Date of Patent: March 31, 1998Assignee: Sharp Kabushiki KaishaInventors: Hisao Okada, Yuji Yamamoto, Takeshi Takarada
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Patent number: 5583531Abstract: A method of driving a display apparatus includes the steps of receiving output requests at a interval and outputting an oscillating voltage to a source line connected to display section, the oscillating voltage including a component which oscillates during one output period of time defined by the output requests.Type: GrantFiled: August 25, 1994Date of Patent: December 10, 1996Assignee: Sharp Kabushiki KaishaInventors: Hisao Okada, Takeshi Takarada, Tadatsugu Nisitani, Toshihiro Yanagi, Hirofumi Fukuoka, Yoshiharu Kanatani, Kuniaki Tanaka
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Patent number: 5583535Abstract: There is provided a column electrode drive circuit applicable to a display-integrated type tablet. A hold circuit has a plurality D-flip-flops. To clock terminals of the flip-flops is input an output signal of an AND circuit which receives inputs of a hold signal and a clock signal. To data terminals of the flip-flops are input sampled display signals. With the above-mentioned arrangement, when the hold signal is at "H" level, the sampled display signals are sequentially output as display signals without modification based on the clock signal. When the hold signal is a pulse signal, the sampled display signals are simultaneously output and held as the display signals. By thus making a simultaneous output function and a sequential output function compatible, the column electrode drive circuit can be utilized as a column electrode drive circuit for the display-integrated type tablet device.Type: GrantFiled: August 19, 1994Date of Patent: December 10, 1996Assignee: Sharp Kabushiki KaishaInventors: Takeshi Takarada, Junji Kawanishi
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Patent number: 5537129Abstract: A common electrode driving circuit for use in a display apparatus including a first substrate; a second substrate opposed to the first substrate with a display medium interposed therebetween; a plurality of pixel electrodes, a plurality of common electrode driving terminals provided on a surface of the first substrate opposed to the second substrate; and at least one common electrode provided on a surface of the second substrate opposed to the first substrate. The common electrode is opposed to the plurality of pixel electrodes and is connected to the plurality of common electrode driving terminals respectively through a plurality of common electrode transfer resistances.Type: GrantFiled: December 23, 1993Date of Patent: July 16, 1996Assignee: Sharp Kabushiki KaishaInventors: Hisao Okada, Tadatsugu Nishitani, Yuji Yamamoto, Takeshi Takarada
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Patent number: 5521611Abstract: In the driving circuit for a display apparatus according to the present invention, a charging circuit applies a voltage equal to or higher than the highest positive gradation voltage to each data line for a predetermined period of time before the start of a period for applying a positive gradation voltage. After that, a positive gradation voltage in accordance with data is applied to each data line. Then, a period for the applying a negative gradation voltage is started, when a negative gradation voltage in accordance with data is applied to each data line. Accordingly, after being charged with a voltage applied by the charging circuit at the beginning of each cycle of the AC driving, each data line is applied with an equal or lower gradation voltage. Alternatively, a discharging circuit first applies a voltage equal to or lower than the lowest negative gradation voltage to each data line for a predetermined period of time before the start of a period for applying a negative gradation voltage.Type: GrantFiled: October 27, 1993Date of Patent: May 28, 1996Assignee: Sharp Kabushiki KaishaInventors: Hisao Okada, Takeshi Takarada, Masaru Tanaka
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Patent number: 5434659Abstract: A cleaning unit used for cleaning the surface of a recording medium in an image forming apparatus, the cleaning unit having a head being moved so as to contact with and separate from the recording medium on the basis of the assessment of preset image forming conditions such as paper size, document size, and copy magnification, and a control section for moving the cleaning head at a detected appropriate time, wherein the cleaning head is released so as to avoid the dispersion of toner that is likely to spoil the image.Type: GrantFiled: August 10, 1994Date of Patent: July 18, 1995Assignee: Sharp Kabushiki KaishaInventors: Takeshi Takarada, Kiyoshi Inamoto, Hidetomo Nishiyama, Masato Tokishige, Kazuyuki Onishi, Kazunori Sohda, Masami Uchida, Tokiyuki Okano
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Patent number: 5095332Abstract: A data processing apparatus provided in a copying machine is provided for eliminating the need for replacing the data such as adjusting values in case of replacing a memory board in the copying machine. The data processing apparatus provided in a copying machine which is used when a first memory for storing electrical signals indicative of adjusting values needed in operation of the copying machine is replaced by a second memory, the data processing apparatus includes means for printing-out on a sheet image informations representative of the adjusting values stored in the first memory, means for reading the image informations on the sheet, and means for converting the read image informations to electrical signals indicative of adjusting values and for storing the converted electrical signals in the second memory.Type: GrantFiled: February 25, 1991Date of Patent: March 10, 1992Assignee: Diafoil Company, LimitedInventors: Kazuyuki Ohnishi, Kiyoshi Inamoto, Masato Tokishige, Takeshi Takarada