Patents by Inventor Masahiro Takeda
Masahiro Takeda 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: 8669395Abstract: Provided is a new crystal A of optically active 4-amino-3-(4-chlorophenyl)butanoic acid which is far better in stability, and a process for producing the crystal and a process for producing the crystal A comprising a step of heating the following crystal B in water having a pH of 3 to 9: crystal A: a crystal of optically active 4-amino-3-(4-chlorophenyl)butanoic acid which has diffraction peaks within the range of a diffraction angle 2? of 8.7 to 9.4°, within that of 2? of 12.2 to 12.8°, and within that of 2? of 24.8 to 25.4° in a powder X-ray diffraction measurement of the crystal by use of the Cu—K? wavelength; and crystal B: a crystal of optically active 4-amino-3-(4-chlorophenyl)butanoic acid which has diffraction peaks within the range of a diffraction angle 2? of 20.8 to 21.4°, within that of 2? of 26.7 to 27.3°, and within that of 2? of 29.7 to 30.3° in a powder X-ray diffraction measurement of the crystal by use of the Cu—K? wavelength.Type: GrantFiled: December 13, 2010Date of Patent: March 11, 2014Assignee: Sumitomo Chemical Company, LimitedInventors: Takashi Miki, Masahiro Takeda, Tetsuro Yamazaki
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Patent number: 8273745Abstract: The present invention relates to a novel compound or a salt thereof, which is useful as a CRTH2 antagonist, especially as a medicament for disorder that participates eosinophil, for example, allergic disorder such as asthma, allergic rhinitis, allergic dermatitis, conjunctival inflammation, hives, eosinophilic bronchitis, food allergy, inflammation of the nasal sinuses, multiple sclerosis, angiitis, or chronic obstructive pulmonary disease (COPD) and the like.Type: GrantFiled: December 13, 2007Date of Patent: September 25, 2012Assignee: Astellas Pharma IncInventors: Tadashi Terasaka, Tatsuya Zenkoh, Hisashi Hayashida, Hiroshi Matsuda, Junji Sato, Yoshimasa Imamura, Hiroshi Nagata, Norio Seki, Yoshiyuki Tenda, Mamoru Tasaki, Masahiro Takeda, Seiichiro Tabuchi, Minoru Yasuda, Kazunori Tsubaki
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Patent number: 8162835Abstract: An ultrasonic image generating method for generating an ultrasonic image based on ultrasonic echo data obtained by transmitting/receiving ultrasonic waves to/from an inspection object, according to the present invention, includes reference position setting steps for determining the reference position on each image with respect to a plurality of consecutive two-dimensional tomograms; correction steps for obtaining regular and consecutive two-dimensional tomograms-by-correcting irregularity of the reference position of each of the two-dimensional tomograms determined by the reference position setting steps; and an ultrasonic image generating step for generating the ultrasonic images based on the regular and consecutive two-dimensional tomograms corrected by the correction steps.Type: GrantFiled: November 16, 2005Date of Patent: April 24, 2012Assignee: Olympus CorporationInventors: Junichi Ichikawa, Masahiro Takeda
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Patent number: 8067647Abstract: A method for producing a ?-nitrostyrene compound is provided in which a benzaldehyde derivative represented by the following formula (I): and nitromethane are condensed in an acetic acid solvent in the presence of a primary amine. This method allows production of a ?-nitrostyrene compound at a high yield in the industrially-safe reaction temperature range.Type: GrantFiled: July 28, 2008Date of Patent: November 29, 2011Assignee: Sumitomo Chemical Company, LimitedInventors: Masahiro Takeda, Hiroshi Kadono, Kazuo Murakami
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Publication number: 20110152572Abstract: Provided is a new crystal A of optically active 4-amino-3-(4-chlorophenyl)butanoic acid which is far better in stability, and a process for producing the crystal and a process for producing the crystal A comprising a step of heating the following crystal B in water having a pH of 3 to 9: crystal A: a crystal of optically active 4-amino-3-(4-chlorophenyl)butanoic acid which has diffraction peaks within the range of a diffraction angle 2? of 8.7 to 9.4°, within that of 2? of 12.2 to 12.8°, and within that of 2? of 24.8 to 25.4° in a powder X-ray diffraction measurement of the crystal by use of the Cu—K? wavelength; and crystal B: a crystal of optically active 4-amino-3-(4-chlorophenyl)butanoic acid which has diffraction peaks within the range of a diffraction angle 2? of 20.8 to 21.4°, within that of 2? of 26.7 to 27.3°, and within that of 2? of 29.7 to 30.3° in a powder X-ray diffraction measurement of the crystal by use of the Cu—K? wavelength.Type: ApplicationFiled: December 13, 2010Publication date: June 23, 2011Inventors: Takashi Miki, Masahiro Takeda, Tetsuro Yamazaki
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Publication number: 20110087049Abstract: A method of producing a purified optically active 4-amino-3-(substituted phenyl)butanoic acid compound which is characterized by comprising a step of making a crude optically active 4-amino-3-(substituted phenyl)butanoic acid compound contact an organic acid in the presence of water.Type: ApplicationFiled: September 22, 2008Publication date: April 14, 2011Inventors: Kazuo Murakami, Masahiro Takeda, Hirofumi Kato
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Patent number: 7752594Abstract: A failure analysis apparatus 10 is composed of an inspection information acquirer 11 for acquiring at least a pattern image P1 of a semiconductor device, a layout information acquirer 12 for acquiring a layout image P3, a failure analyzer 13 for analyzing a failure of the semiconductor device, and an analysis screen display controller 14 for letting a display device 40 display information about the failure analysis. The analysis screen display controller 14 generates a superimposed image in which the pattern image P1 and the layout image P3 are superimposed, as an image of the semiconductor device to be displayed by the display device 40, and sets a transmittance of the layout image P3 relative to the pattern image P1 in the superimposed image. This substantializes a semiconductor failure analysis apparatus, analysis method, analysis program, and analysis system capable of securely and efficiently carrying out the analysis of the failure of the semiconductor device.Type: GrantFiled: April 24, 2006Date of Patent: July 6, 2010Assignee: Hamamatsu Photonics K.K.Inventors: Masahiro Takeda, Kazuhiro Hotta
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Publication number: 20100130795Abstract: A method for producing a ?-nitrostyrene compound is provided in which a benzaldehyde derivative represented by the following formula (I): and nitromethane are condensed in an acetic acid solvent in the presence of a primary amine. This method allows production of a ?-nitrostyrene compound at a high yield in the industrially-safe reaction temperature range.Type: ApplicationFiled: July 28, 2008Publication date: May 27, 2010Inventors: Masahiro Takeda, Hiroshi Kadono, Kazuo Murakami
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Publication number: 20100009991Abstract: The present invention relates to a novel compound or a salt thereof, which is useful as a CRTH2 antagonist, especially as a medicament for disorder that participates eosinophil, for example, allergic disorder such as asthma, allergic rhinitis, allergic dermatitis, conjunctival inflammation, hives, eosinophilic bronchitis, food allergy, inflammation of the nasal sinuses, multiple sclerosis, angiitis, or chronic obstructive pulmonary disease (COPD) and the like.Type: ApplicationFiled: December 13, 2007Publication date: January 14, 2010Applicant: Astellas Pharma Inc.Inventors: Tadashi Terasaka, Tatsuya Zenkoh, Hisashi Hayashida, Hiroshi Matsuda, Junji Sato, Yoshimasa Imamura, Hiroshi Nagata, Norio Seki, Yoshiyuki Tenda, Mamoru Tasaki, Masahiro Takeda, Seiichiro Tabuchi, Minoru Yasuda, Kazunori Tsubaki
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Publication number: 20070020781Abstract: A failure analysis apparatus 10 is composed of an inspection information acquirer 11 for acquiring a failure observed image P2 of a semiconductor device, a layout information acquirer 12 for acquiring layout information, a failure analyzer 13 for analyzing a failure of the semiconductor device, and an analysis screen display controller 14 for letting a display device 40 display information about a result of the analysis. The failure analyzer 13 sets an analysis region with reference to the failure observed image P2, and extracts a net passing the analysis region, from a plurality of nets included in a layout of the semiconductor device. This substantializes a semiconductor failure analysis apparatus, analysis method, and analysis program capable of securely and efficiently performing the analysis of the failure of the semiconductor device.Type: ApplicationFiled: April 24, 2006Publication date: January 25, 2007Inventors: Toshiyuki Majima, Akira Shimase, Hirotoshi Terada, Kazuhiro Hotta, Masahiro Takeda
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Patent number: 7167695Abstract: The diversity receiver according to the present invention operates as a multicarrier diversity receiver. The diversity receiver includes weight calculators that calculate a weight coefficient for each carrier based on information about a phase difference between branches and amplitude information on each carrier obtained from a reception frame, and branch combiners that combine reception signals at branches for each carrier based on the weight coefficient prior to signal detection.Type: GrantFiled: May 2, 2003Date of Patent: January 23, 2007Assignee: Mitsubishi Denki Kabushiki KaishaInventor: Masahiro Takeda
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Publication number: 20070011519Abstract: A failure analysis apparatus 10 is composed of an inspection information acquirer 11 for acquiring at least a pattern image P1 of a semiconductor device, a layout information acquirer 12 for acquiring a layout image P3, a failure analyzer 13 for analyzing a failure of the semiconductor device, and an analysis screen display controller 14 for letting a display device 40 display information about the failure analysis. The analysis screen display controller 14 generates a superimposed image in which the pattern image P1 and the layout image P3 are superimposed, as an image of the semiconductor device to be displayed by the display device 40, and sets a transmittance of the layout image P3 relative to the pattern image P1 in the superimposed image. This substantializes a semiconductor failure analysis apparatus, analysis method, analysis program, and analysis system capable of securely and efficiently carrying out the analysis of the failure of the semiconductor device.Type: ApplicationFiled: April 24, 2006Publication date: January 11, 2007Inventors: Masahiro Takeda, Kazuhiro Hotta
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Publication number: 20060079772Abstract: An ultrasonic image generating method for generating an ultrasonic image based on ultrasonic echo data obtained by transmitting/receiving ultrasonic waves to/from an inspection object, according to the present invention, includes reference position setting steps for determining the reference position on each image with respect to a plurality of consecutive two-dimensional tomograms; correction steps for obtaining regular and consecutive two-dimensional tomograms-by-correcting irregularity of the reference position of each of the two-dimensional tomograms determined by the reference position setting steps; and an ultrasonic image generating step for generating the ultrasonic images based on the regular and consecutive two-dimensional tomograms corrected by the correction steps.Type: ApplicationFiled: November 16, 2005Publication date: April 13, 2006Applicant: OLYMPUS CORPORATIONInventors: Junichi Ichikawa, Masahiro Takeda
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Publication number: 20050162014Abstract: An actuator having satisfactory responsiveness. The actuator includes an input terminal, an output terminal, a switch connected between the output and input terminals, a driving portion, and a control circuit. When reset, the control circuit sets an initial value and opens the switch to disconnect the input and output terminals from each other. When the control circuit receives a control signal including a predetermined value, the control circuit changes the initial value to the predetermined value, which is used as the address value of the actuator and closes the switch to connect the input and output terminals to each other.Type: ApplicationFiled: March 26, 2004Publication date: July 28, 2005Inventors: Satoshi Morizaki, Masahiro Takeda
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Publication number: 20040242173Abstract: The diversity receiver according to the present invention operates as a multicarrier diversity receiver. The diversity receiver includes weight calculators that calculate a weight coefficient for each carrier based on information about a phase difference between branches and amplitude information on each carrier obtained from a reception frame, and branch combiners that combine reception signals at branches for each carrier based on the weight coefficient prior to signal detection.Type: ApplicationFiled: February 11, 2004Publication date: December 2, 2004Inventor: Masahiro Takeda
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Patent number: 6809458Abstract: A control apparatus controls an ultrasonic motor. The ultrasonic motor includes a stator, a piezoelectric element provided in the stator, and a rotor. The rotor is slidably pressed against the stator. When a driving high frequency voltage is applied to the piezoelectric element, the stator is vibrated to rotate the rotor. The control apparatus includes measuring means. The measuring means changes the frequency of a searching high frequency voltage, the searching high frequency voltage being lower than the driving high frequency voltage, thereby measuring a resonance frequency of the ultrasonic motor. The control apparatus drives the motor in a favorable manner.Type: GrantFiled: December 6, 2002Date of Patent: October 26, 2004Assignee: ASMO Co., Ltd.Inventors: Yukihiro Matsushita, Motoyasu Yano, Masahiro Takeda
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Publication number: 20030107298Abstract: A control apparatus controls an ultrasonic motor. The ultrasonic motor includes a stator, a piezoelectric element provided in the stator, and a rotor. The rotor is slidably pressed against the stator. When a driving high frequency voltage is applied to the piezoelectric element, the stator is vibrated to rotate the rotor. The control apparatus includes measuring means. The measuring means changes the frequency of a searching high frequency voltage, the searching high frequency voltage being lower than the driving high frequency voltage, thereby measuring a resonance frequency of the ultrasonic motor. The control apparatus drives the motor in a favorable manner.Type: ApplicationFiled: December 6, 2002Publication date: June 12, 2003Inventors: Yukihiro Matsushita, Motoyasu Yano, Masahiro Takeda
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Patent number: 6394825Abstract: In molding a connector block 1 for injectors including a fuel passage 3 integrally formed, a fuel rail 4 including the fuel passage 3 is advancedly formed by a first molding. The fuel rail 4 is provided with a plurality of positioning projections 7 with respect to metal molds for a secondary molding in a longitudinal direction. The fuel rail 4 is set in a position and placed in the metal molds. When the secondary molding is conducted in this state, the fuel rail 4 will not be subjected a positional displacement, but can be accurately molded.Type: GrantFiled: May 22, 2000Date of Patent: May 28, 2002Assignees: Sumitomo Wiring Systems, Ltd., Denso CorporationInventors: Mitsuhiro Fujitani, Masaki Akutagawa, Masahiro Takeda
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Patent number: 6341967Abstract: By dividing a bus bar group 65 into a pair of subordinate bus bar groups 65A, 65B, tabs 31 extending from the bus bar group 65 in mutually different oblique directions can be held in a metal mold separately. Due to this, the bus bar group 65 can also be set in a metal mold including a slide mold 3, which makes it possible to manufacture a connector block 20 with high efficiency.Type: GrantFiled: November 27, 2000Date of Patent: January 29, 2002Assignees: Sumitomo Wiring Systems, Ltd., Denso CorporationInventors: Akira Nabeshima, Masahiro Takeda, Masaki Akutagawa
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Patent number: 5760342Abstract: Combinational weighing by ranks is carried out by supplying articles of different weights to a plurality of weighing devices one at a time, measuring individual weights of these articles by the weighing devices, classifying the weighed articles individually into ranks according to their measured weights, and carrying out combinational weighing only on those of the weighed articles in a same rank. The combinational weighing is carried out preferentially on the articles in the most populated rank. An apparatus for this method not only includes a plurality of weighing devices, an article supplying units adapted to supply articles of different weights one at a time to these weighing devices, and a device for carrying out combinational calculations but also is adapted to classify weighed articles into ranks according to the measured weights.Type: GrantFiled: May 14, 1996Date of Patent: June 2, 1998Assignee: Ishida Co., Ltd.Inventors: Masahiro Takeda, Kiyokazu Shibahara