Patents by Inventor Fumikazu Takahashi

Fumikazu Takahashi 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).

  • Patent number: 11995742
    Abstract: An image processing apparatus includes a graphical image generator that generates a first graphical image and a second graphical image, and a mode switching unit that switches between a first display mode and a second display mode so that a display displays the first graphical image or the second graphical image. Each graphical image includes a color wheel indicating a two-dimensional color space of hue and saturation and a lightness bar indicating a one-dimensional color space of lightness. In the first graphical image, each position in the color wheel and the lightness bar is indicated by the hue and saturation indicated by that position. In the second graphical image, a distribution of colors included in the color image in the color space of hue and saturation or the color space of lightness is superposed on the color wheel and the lightness bar.
    Type: Grant
    Filed: May 28, 2020
    Date of Patent: May 28, 2024
    Assignee: FANUC CORPORATION
    Inventors: Fumikazu Warashina, Yuutarou Takahashi, Wanfeng Fu
  • Publication number: 20240110211
    Abstract: Provided are a transformed cell having the ability to produce 2,5-pyridine dicarboxylic acids, and a method for producing 2,5-pyridine dicarboxylic acids using the same. The present invention provides a transformed cell having the ability to produce 2,5-pyridine dicarboxylic acids, the transformed cell being derived from a microbe having the ability to biosynthesize 4-aminobenzoic acids and having the enhanced expression of the following polypeptides (I) and (II): (I) a polypeptide having 4-aminobenzoic acid hydroxylation activity, and (II) a polypeptide having 4-amino-3-hydroxybenzoate 2,3-dioxygenase activity.
    Type: Application
    Filed: December 28, 2020
    Publication date: April 4, 2024
    Applicant: Kao Corporation
    Inventors: Kyoshiro NONAKA, Fumikazu TAKAHASHI
  • Patent number: 11560061
    Abstract: A motor drive device includes a power conversion circuit that drives an AC motor and a controller that controls the power conversion circuit. The controller includes a command current calculation unit generating a command current according to command torque for the AC motor and a current control unit that performs feedback control for adjusting a current applied to the AC motor to the command current. The controller also includes a control gain setting unit that calculates a control gain used for the feedback control based on the command torque and sets the calculated control gain in the current control unit. The control gain setting unit performs control such that a time from a decrease of an absolute value of the command torque to switching of the control gain is longer than a time from an increase of the absolute value of the command torque to switching of the control gain.
    Type: Grant
    Filed: September 12, 2019
    Date of Patent: January 24, 2023
    Assignee: HITACHI ASTEMO, LTD.
    Inventors: Noriya Nakao, Fumikazu Takahashi, Kenichi Yoshida
  • Publication number: 20220134890
    Abstract: A motor drive device (200) includes: a power conversion circuit (204) that drives an AC motor; and a controller (203) that controls the power conversion circuit. The controller includes: a command current calculation unit (206) that generates a command current according to command torque for the AC motor; a current control unit (208) that performs feedback control for adjusting a current applied to the AC motor to the command current; and a control gain setting unit (207) that calculates a control gain used for the feedback control based on the command torque and sets the calculated control gain in the current control unit. The control gain setting unit performs control such that a time from a decrease of an absolute value of the command torque to switching of the control gain is longer than a time from an increase of the absolute value of the command torque to switching of the control gain. As a result, deterioration of control stability of motor torque during a transient response is avoided.
    Type: Application
    Filed: September 12, 2019
    Publication date: May 5, 2022
    Applicant: Hitachi Astemo, Ltd.
    Inventors: Noriya NAKAO, Fumikazu TAKAHASHI, Kenichi YOSHIDA
  • Patent number: 11312980
    Abstract: Provided is a method for manufacturing a 3-hydroxy-4-aminobenzoic acid by using a microorganism. The method for manufacturing a 3-hydroxy-4-aminobenzoic acid comprises a step of bringing a 4-aminobenzoic acid into contact with a microorganism that produces the following polypeptide (A) or (B): (A) a polypeptide consisting of an amino acid sequence shown in SEQ ID NO: 2 or a polypeptide consisting of an amino acid sequence that has at least 90% identity to the amino acid sequence shown in SEQ ID NO: 2 and has 4-hydroxybenzoate hydroxylase activity, (B) a polypeptide consisting of an amino acid sequence shown in SEQ ID NO: 6 or a polypeptide consisting of an amino acid sequence that has at least 90% identity to the amino acid sequence shown in SEQ ID NO: 6 and has 4-hydroxybenzoate hydroxylase activity.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: April 26, 2022
    Assignee: Kao Corporation
    Inventors: Kyoshiro Nonaka, Fumikazu Takahashi
  • Patent number: 11239784
    Abstract: Stable current control is performed even at the time of occurrence of disturbance, while the steadily occurring current pulsation is suppressed. A motor drive device 100 includes a power conversion circuit 103 that drives an alternating-current motor 101, and a controller 102 that controls the power conversion circuit 103. The controller 102 includes a voltage command calculation unit 108, a control state judgement unit 112, and a control gain change unit 113.
    Type: Grant
    Filed: March 14, 2019
    Date of Patent: February 1, 2022
    Assignee: HITACHI ASTEMO, LTD.
    Inventors: Noriya Nakao, Kazuaki Tobari, Fumikazu Takahashi, Shingo Nishiguchi
  • Publication number: 20210317484
    Abstract: Provided is a method for manufacturing a 3-hydroxy-4-aminobenzoic acid by using a microorganism. The method for manufacturing a 3-hydroxy-4-aminobenzoic acid comprises a step of bringing a 4-aminobenzoic acid into contact with a microorganism that produces the following polypeptide (A) or (B): (A) a polypeptide consisting of an amino acid sequence shown in SEQ ID NO: 2 or a polypeptide consisting of an amino acid sequence that has at least 90% identity to the amino acid sequence shown in SEQ ID NO: 2 and has 4-hydroxybenzoate hydroxylase activity, (B) a polypeptide consisting of an amino acid sequence shown in SEQ ID NO: 6 or a polypeptide consisting of an amino acid sequence that has at least 90% identity to the amino acid sequence shown in SEQ ID NO: 6 and has 4-hydroxybenzoate hydroxylase activity.
    Type: Application
    Filed: September 6, 2019
    Publication date: October 14, 2021
    Applicant: Kao Corporation
    Inventors: Kyoshiro NONAKA, Fumikazu TAKAHASHI
  • Publication number: 20210257946
    Abstract: Stable current control is performed even at the time of occurrence of disturbance, while the steadily occurring current pulsation is suppressed. A motor drive device 100 includes a power conversion circuit 103 that drives an alternating-current motor 101, and a controller 102 that controls the power conversion circuit 103. The controller 102 includes a voltage command calculation unit 108, a control state judgement unit 112, and a control gain change unit 113.
    Type: Application
    Filed: March 14, 2019
    Publication date: August 19, 2021
    Applicant: HitachiI Automotive Systems, Ltd.
    Inventors: Noriya NAKAO, Kazuaki TOBARI, Fumikazu TAKAHASHI, Shingo NISHIGUCHI
  • Patent number: 10590428
    Abstract: Provided is a microorganism having high sophorolipid production capability. Disclosed is a sophorolipid-producing yeast mutant strain, in which a polypeptide consisting of the amino acid sequence set forth in SEQ ID NO:2 or an amino acid sequence having at least 90% identity therewith, has been deleted or deactivated.
    Type: Grant
    Filed: July 15, 2016
    Date of Patent: March 17, 2020
    Assignee: Kao Corporation
    Inventors: Takahiro Ichihara, Yasushi Kageyama, Masatoshi Tohata, Fumikazu Takahashi
  • Patent number: 10590442
    Abstract: Improvement in C4 dicarboxylic acid productivity in a host cell is provided. A polypeptide consisting of the amino acid sequence represented by SEQ ID NO: 2 or an amino acid sequence having at least 90% identity therewith.
    Type: Grant
    Filed: June 22, 2017
    Date of Patent: March 17, 2020
    Assignee: Kao Corporation
    Inventors: Kyoshiro Nonaka, Fumikazu Takahashi
  • Publication number: 20190316159
    Abstract: Improvement in C4 dicarboxylic acid productivity in a host cell is provided. A polypeptide consisting of the amino acid sequence represented by SEQ ID NO: 2 or an amino acid sequence having at least 90% identity therewith.
    Type: Application
    Filed: June 22, 2017
    Publication date: October 17, 2019
    Applicant: Kao Corporation
    Inventors: Kyoshiro NONAKA, Fumikazu TAKAHASHI
  • Patent number: 10435684
    Abstract: Provided is a microorganism exhibiting high production capability for sophorolipids. Disclosed is a yeast mutant strain having high sophorolipid productivity, in which a transporter transporting Acyl-CoA to a peroxisome has been deleted or deactivated.
    Type: Grant
    Filed: July 15, 2016
    Date of Patent: October 8, 2019
    Assignee: Kao Corporation
    Inventors: Takahiro Ichihara, Masatoshi Tohata, Atsuko Hayase, Fumikazu Takahashi
  • Patent number: 10351862
    Abstract: Provided is a promoter suitable for the high expression of a gene of interest. A promoter consisting of a DNA selected from the group consisting of the following (a) to (d): (a) a DNA comprising the nucleotide sequence represented by any one of SEQ ID NOs: 1 to 3; (b) a DNA consisting of a nucleotide sequence having at least 70% identity to the nucleotide sequence represented by any one of SEQ ID NOs: 1 to 3 and having a promoter activity; (c) a DNA consisting of a nucleotide sequence wherein one or several of nucleotides are deleted, substituted or added in the nucleotide sequence represented by any one of SEQ ID NOS: 1 to 3 and having a promoter activity; and (d) a DNA which hybridizes with a DNA consisting of a nucleotide sequence complementary to the nucleotide sequence represented by any one of SEQ ID NOs: 1 to 3 under stringent conditions and which has a promoter activity.
    Type: Grant
    Filed: July 27, 2016
    Date of Patent: July 16, 2019
    Assignee: Kao Corporation
    Inventors: Jitsuro Kaneda, Yuichi Tsuboi, Fumikazu Takahashi
  • Publication number: 20190062723
    Abstract: Provided is a microorganism exhibiting high production capability for sophorolipids. Disclosed is a yeast mutant strain having high sophorolipid productivity, in which a transporter transporting Acyl-CoA to a peroxisome has been deleted or deactivated.
    Type: Application
    Filed: July 15, 2016
    Publication date: February 28, 2019
    Applicant: KAO CORPORATION
    Inventors: Takahiro ICHIHARA, Masatoshi TOHATA, Atsuko HAYASE, Fumikazu TAKAHASHI
  • Patent number: 10063058
    Abstract: A power converter includes a plurality of converters which are connected in parallel to a DC power supply in which an operating point is changed in accordance with an output current or an output voltage. The plurality of converters include maximum power point tracking units for performing maximum power point tracking calculations of the DC power supply. Results of the maximum power point tracking calculations of the plurality of converters are unified between the plurality of converters and the plurality of converters are controlled based on the unified calculation result.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: August 28, 2018
    Assignee: Hitachi Information & Telecommunication Engineering, Ltd.
    Inventors: Takae Shimada, Fumikazu Takahashi, Kimiaki Taniguchi, Kosuke Abe
  • Publication number: 20180223292
    Abstract: Provided is a promoter suitable for the high expression of a gene of interest. A promoter consisting of a DNA selected from the group consisting of the following (a) to (d): (a) a DNA comprising the nucleotide sequence represented by any one of SEQ ID NOs: 1 to 3; (b) a DNA consisting of a nucleotide sequence having at least 70% identity to the nucleotide sequence represented by any one of SEQ ID NOs: 1 to 3 and having a promoter activity; (c) a DNA consisting of a nucleotide sequence wherein one or several of nucleotides are deleted, substituted or added in the nucleotide sequence represented by any one of SEQ ID NOS: 1 to 3 and having a promoter activity; and (d) a DNA which hybridizes with a DNA consisting of a nucleotide sequence complementary to the nucleotide sequence represented by any one of SEQ ID NOs: 1 to 3 under stringent conditions and which has a promoter activity.
    Type: Application
    Filed: July 27, 2016
    Publication date: August 9, 2018
    Applicant: Kao Corporation
    Inventors: Jitsuro KANEDA, Yuichi TSUBOI, Fumikazu TAKAHASHI
  • Publication number: 20180208935
    Abstract: Provided is a microorganism having high sophorolipid production capability. Disclosed is a sophorolipid-producing yeast mutant strain, in which a polypeptide consisting of the amino acid sequence set forth in SEQ ID NO:2 or an amino acid sequence having at least 90% identity therewith, has been deleted or deactivated.
    Type: Application
    Filed: July 15, 2016
    Publication date: July 26, 2018
    Applicant: Kao Corporation
    Inventors: Takahiro ICHIHARA, Yasushi KAGEYAMA, Masatoshi TOHATA, Fumikazu TAKAHASHI
  • Patent number: 9991819
    Abstract: A power conversion system is capable of distinguishing easily and clearly between being interconnected to the power system and being in an isolated operation. The power conversion system converts DC power to AC power to interconnect with a power system and injects reactive power into a grid node for determining an isolated operation, including: a voltage detector that detects an output voltage at the grid node; a current detector that detects an output current at the grid node; a frequency measurement unit that measures a frequency of the output voltage at the grid node; a reactive-power measurement unit that measures reactive power at the grid node; and an isolated-operation determination unit that determines whether or not the power conversion system is in an isolated operation as disconnected from the power system. The isolated-operation determination unit includes a reactive-power-fluctuation determination unit that performs a first isolated-operation determination from the reactive power.
    Type: Grant
    Filed: October 21, 2014
    Date of Patent: June 5, 2018
    Assignee: Hitachi Information & Telecommunication Engineering, Ltd.
    Inventors: Tomoyuki Hatakeyama, Akira Kikuchi, Fumikazu Takahashi, Kimiaki Taniguchi, Hirofumi Oyamada
  • Publication number: 20170279279
    Abstract: A power converter includes a plurality of converters which are connected in parallel to a DC power supply in which an operating point is changed in accordance with an output current or an output voltage. The plurality of converters include maximum power point tracking units for performing maximum power point tracking calculations of the DC power supply. Results of the maximum power point tracking calculations of the plurality of converters are unified between the plurality of converters and the plurality of converters are controlled based on the unified calculation result.
    Type: Application
    Filed: March 13, 2017
    Publication date: September 28, 2017
    Inventors: Takae SHIMADA, Fumikazu TAKAHASHI, Kimiaki TANIGUCHI, Kosuke ABE
  • Patent number: 9680303
    Abstract: A power storage system is provided with charge switches, discharge switches, a bidirectional DC/DC converter and a power storage system controller connecting all the battery packs to an external circuit to achieve parallel charge and discharge, and the power storage system starts the charge by setting a rated charge current value per one battery pack to Iset and setting the rated charge current value Iset as an initial value of a charge current command value Iref(1), thereafter monitor the charge current of each of the battery packs after elapse of a predetermined time so as to subtract its maximum value Ibmax(1) from the charge current command value Iref(1), and add the rated charge current value Iset to result of subtraction Ierr (Iref(1)?Ibmax(1)) so as to set as a new charge current command value Iref(2) and carry out pre-charge in such a manner as to carry on the charge.
    Type: Grant
    Filed: October 24, 2013
    Date of Patent: June 13, 2017
    Assignee: Hitachi Information & Telecommunication Engineering, Ltd.
    Inventors: Fumikazu Takahashi, Yoshihide Takahashi, Yusuke Katsuyama, Kimiaki Taniguchi, Akinori Uchida, Masahiro Hamaogi, Susumu Nagafuchi