Patents by Inventor Takahisa Nakai
Takahisa Nakai 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: 8648557Abstract: A drive control signal generating circuit that generates a drive control signal for driving a motor includes an output control circuit that includes a flip-flop in which a state changes by a rotational state signal of the motor crossing a reference value and generates a motor drive control signal according to the state of the flip-flop, a clock generating circuit that generates a clock that defines a time of reading data in the flip-flop of the output control circuit; and a PWM conversion circuit that PWM-converts the drive control signal using the clock as a PWM signal. The clock has a frequency in which the output control circuit operates and has a duty ratio of the PWM signal.Type: GrantFiled: September 28, 2011Date of Patent: February 11, 2014Assignee: ON Semiconductor Trading, Ltd.Inventors: Takashi Ogawa, Takahisa Nakai, Tsutomu Murata
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Patent number: 8502530Abstract: In an offset cancelling circuit of a Hall element, a voltage is applied from four directions and from outside such that a current flowing in the Hall element is switched by 90°, to set a first state through a fourth state, and output voltages of the Hall element in the first state through the fourth state are averaged.Type: GrantFiled: June 8, 2010Date of Patent: August 6, 2013Assignees: Sanyo Semiconductor Co., Ltd., Semiconductor Components Industries, LLCInventors: Takashi Ogawa, Hironori Terazawa, Takahisa Nakai
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Publication number: 20120081049Abstract: PWM conversion is efficiently executed. An output control circuit comprises a flip-flop which reads crossing of a reference value by a rotational state signal from a motor, and generates a motor drive control signal according to a state of the flip-flop. A clock generator generates a clock which defines a time of reading data in the flip-flop of the output control circuit. A PWM conversion circuit PWM-converts the drive control signal using the clock as a PWM signal.Type: ApplicationFiled: September 28, 2011Publication date: April 5, 2012Applicant: ON SEMICONDUCTOR TRADING, LTD.Inventors: Takashi Ogawa, Takahisa Nakai, Tsutomu Murata
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Patent number: 7915022Abstract: The present invention relates to a polypeptide having an activity to asymmetrically reduce (3S)-1-chloro-3-tert-butoxycarbonylamino-4-phenyl-2-butanone to produce (2R,3S)-1-chloro-3-tert-butoxycarbonylamino-4-phenyl-2-butanol isolated from a microorganism belonging to the genus Ogataea, a DNA encoding the polypeptide and a transformant that produces the polypeptide. The present invention moreover relates to a method of producing (2R,3S)-1-chloro-3-tert-butoxycarbonylamino-4-phenyl-2-butanol utilizing the polypeptide or the transformant. Using the polypeptide or transformant of the present invention, optically active alcohols such as (2R,3S)-1-chloro-3-tert-butoxycarbonylamino-4-phenyl-2-butanol and the like can be produced efficiently.Type: GrantFiled: July 20, 2010Date of Patent: March 29, 2011Assignee: Kaneka CorporationInventors: Noriyuki Kizaki, Miho Yano, Masashiro Funaki, Teruaki Takesue, Yoshihiko Yasohara, Souichi Morikawa, Takahisa Nakai, Michihiko Kataoka, Sakayu Shimizu
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Publication number: 20100317075Abstract: The present invention relates to a polypeptide having an activity to asymmetrically reduce (3S)-1-chloro-3-tert-butoxycarbonylamino-4-phenyl-2-butanone to produce (2R,3S)-1-chloro-3-tert-butoxycarbonylamino-4-phenyl-2-butanol isolated from a microorganism belonging to the genus Ogataea, a DNA encoding the polypeptide and a transformant that produces the polypeptide. The present invention moreover relates to a method of producing (2R,3S)-1-chloro-3-tert-butoxycarbonylamino-4-phenyl-2-butanol utilizing the polypeptide or the transformant. Using the polypeptide or transformant of the present invention, optically active alcohols such as (2R,3S)-1-chloro-3-tert-butoxycarbonylamino-4-phenyl-2-butanol and the like can be produced efficiently.Type: ApplicationFiled: July 20, 2010Publication date: December 16, 2010Applicant: KANEKA CORPORATIONInventors: NORIYUKI KIZAKI, MIHO YANO, MASAHIRO FUNAKI, TERUAKI TAKESUE, YOSHIHIKO YASOHARA, SOUICHI MORIKAWA, TAKAHISA NAKAI, MICHIHIKO KATAOKA, SAKAYU SHIMIZU
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Publication number: 20100308801Abstract: In an offset cancelling circuit of a Hall element, a voltage is applied from four directions and from outside such that a current flowing in the Hall element is switched by 90°, to set a first state through a fourth state, and output voltages of the Hall element in the first state through the fourth state are averaged.Type: ApplicationFiled: June 8, 2010Publication date: December 9, 2010Applicants: SANYO ELECTRIC CO., LTD., SANYO SEMICONDUCTOR CO., LTD.Inventors: Takashi OGAWA, Hironori TERAZAWA, Takahisa NAKAI
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Patent number: 7794993Abstract: The present invention relates to a polypeptide having an activity to asymmetrically reduce (3S)-1-chloro-3-tert-butoxycarbonylamino-4-phenyl-2-butanone to produce (2R,3S)-1-chloro-3-tert-butoxycarbonylamino-4-phenyl-2-butanol isolated from a microorganism belonging to the genus Ogataea, a DNA encoding the polypeptide and a transformant that produces the polypeptide. The present invention moreover relates to a method of producing (2R,3S)-1-chloro-3-tert-butoxycarbonylamino-4-phenyl-2-butanol utilizing the polypeptide or the transformant. Using the polypeptide or transformant of the present invention, optically active alcohols such as (2R,3S)-1-chloro-3-tert-butoxycarbonylamino-4-phenyl-2-butanol and the like can be produced efficiently.Type: GrantFiled: August 1, 2005Date of Patent: September 14, 2010Assignee: Kaneka CorporationInventors: Noriyuki Kizaki, Miho Yano, Masahiro Funaki, Teruaki Takesue, Yoshihiko Yasohara, Souichi Morikawa, Takahisa Nakai, Michihiko Kataoka, Sakayu Shimizu
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Patent number: 7782648Abstract: Correction data is written in fuse circuits of q bits. A reading circuit sequentially reads information of the fuse circuits through a selector and writes the information in a storage circuit. Therefore, read data is output from the storage circuit in parallel.Type: GrantFiled: September 28, 2007Date of Patent: August 24, 2010Assignees: Sanyo Electric Co., Ltd., SANYO Semiconductor Co., Ltd.Inventors: Yuichi Matsuo, Takahisa Nakai
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Publication number: 20090253794Abstract: The present invention is a fibroblast activator, collagen production promoter, collagen contraction promoter, hyaluronic acid production promoter, ATP production promoter or melanin formation suppressor, which contains, as an active ingredient, at least one kind of compound selected from the group consisting of conagenin, a conagenin derivative, and a pharmaceutically acceptable salt thereof, as well as a composition (skin external preparation, cosmetic, pharmaceutical product or food, which is a composition for the improvement of wrinkles or a whitening composition) containing such activator, promoter or melanin formation suppressor. According to the present invention, a safe skin external preparation, cosmetic (cosmetic composition), pharmaceutical product or food, which shows a high wrinkle improving effect, can be provided, and a safe skin external preparation, cosmetic (cosmetic composition), pharmaceutical product or food, which shows a high whitening effect can be provided.Type: ApplicationFiled: July 21, 2006Publication date: October 8, 2009Inventors: Jun Tomono, Takahisa Nakai, Toshihide Fujii
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Publication number: 20090209623Abstract: Disclosed are: a method for producing an anti-sense nucleic acid which has a wide variation in nucleotide sequences and excellent anti-sense properties at a low cost in a simple manner and in a large scale; and a cosmetic composition or pharmaceutical composition comprising the anti-sense nucleic acid. A method is discovered which can produce a low molecular weight nucleic acid having anti-sense properties from a nucleic acid starting material derived from an organism at a high yield by using a probe nucleic acid having at least a part of the nucleotide sequence of a target gene. An anti-sense nucleic acid produced by using a nucleic acid derived from an organism as a starting material; and a method for producing the anti-sense nucleic acid.Type: ApplicationFiled: July 24, 2006Publication date: August 20, 2009Inventors: Jon Tomono, Souichi Morikawa, Takahisa Nakai
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Publication number: 20090003093Abstract: Correction data is written in fuse circuits of q bits. A reading circuit sequentially reads information of the fuse circuits through a selector and writes the information in a storage circuit. Therefore, read data is output from the storage circuit in parallel.Type: ApplicationFiled: September 28, 2007Publication date: January 1, 2009Applicants: SANYO ELECTRIC CO., LTD., SANYO SEMICONDUCTOR CO., LTD.Inventors: Yuichi Matsuo, Takahisa Nakai
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Publication number: 20080261281Abstract: The present invention relates to a polypeptide having an activity to asymmetrically reduce (3S)-1-chloro-3-tert-butoxycarbonylamino-4-phenyl-2-butanone to produce (2R,3S)-1-chloro-3-tert-butoxycarbonylamino-4-phenyl-2-butanol isolated from a microorganism belonging to the genus Ogataea, a DNA encoding the polypeptide and a transformant that produces the polypeptide. The present invention moreover relates to a method of producing (2R,3S)-1-chloro-3-tert-butoxycarbonylamino-4-phenyl-2-butanol utilizing the polypeptide or the transformant. Using the polypeptide or transformant of the present invention, optically active alcohols such as (2R,3S)-1-chloro-3-tert-butoxycarbonylamino-4-phenyl-2-butanol and the like can be produced efficiently.Type: ApplicationFiled: August 1, 2005Publication date: October 23, 2008Applicant: Kaneka CorporationInventors: Noriyuki Kizaki, Miho Yano, Masahiro Funaki, Teruaki Takesue, Yoshihiko Yasohara, Souichi Morikawa, Takahisa Nakai, Michihiko Kataoka, Sakayu Shimizu
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Publication number: 20040248250Abstract: An enzyme modifying method for converting the coenzyme-dependency of an oxidoreductase is developed. Using this method, a novel carbonyl reductase mutant capable of utilizing NADH as a coenzyme is provided. It is also intended to provide a process for enzymatically producing an optically active (S)-4-halo-3-hydroxybutyric ester by utilizing the carbonyl reductase mutant.Type: ApplicationFiled: June 24, 2004Publication date: December 9, 2004Inventors: Takahisa Nakai, Souichi Morikawa, Noriyuki Kizaki, Yoshihiko Yasohara
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Publication number: 20030236629Abstract: The present invention provides a method for calculating an optimized solution of the amino acid sequences of multiple-mutated proteins. The method comprises searching the three-dimensional structural coordinates of amino acid side chains of the amino acid sequences of members of a multiple-mutated protein population based on the three-dimensional structure data of a template protein population using a dead end elimination algorithm, and executing structural energy minimization calculations for the members, thereby calculating the three-dimensional structural coordinates of an optimum multiple-mutated protein, calculating a characteristic value from the three-dimensional structural coordinates of the optimum multiple-mutated protein, and applying a genetic algorithm to the multiple-mutated protein population to calculate the members which optimize the characteristic value.Type: ApplicationFiled: June 20, 2002Publication date: December 25, 2003Applicant: KANEKA CORPORATIONInventors: Souichi Morikawa, Takahisa Nakai, Kiyoto Ishii
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Patent number: 6133431Abstract: An adsorbent that exhibits a high specificity in adsorbing immunoglobulins and/or complexes thereof, is extremely reduced in the lowering of the adsorption characteristic during sterilization or storage, is highly stable and safe, and is prepared by immobilizing on a water-insoluble support either a peptide derivative which has undergone at least one of the deletion, substitution, insertion, or addition of amino acids in a peptide having a specified amino acid sequence or an amino acid sequence, or the above peptide derivative which has undergone the addition of Lyn or Cys at the amino and/or carboxyl terminal thereof; a device for adsorption and removal made by packing the adsorbent in a vessel equipped with effluent preventing means; and a method of adsorbing and removing immunoglobulins and/or complexes thereof contained in the blood, plasma or other body fluids with the adsorbent.Type: GrantFiled: October 20, 1998Date of Patent: October 17, 2000Assignee: Kaneka CorporationInventors: Takamune Yasuda, Osamu Odawara, Eiji Ogino, Michio Nomura, Takahisa Nakai, Takashi Asahi, Nobutaka Tani