Patents by Inventor Masayoshi Itoh

Masayoshi Itoh 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: 11839697
    Abstract: Provided is a means for identifying cells suitable for transplantation into a cornea, or a means for producing a cell population suitable for transplantation into a cornea using the same. A method for producing a cell population suitable for transplantation into a cornea, the method comprising the steps of (1) preparing a cell population cultured under conditions suitable for inducing differentiation into corneal endothelial cells, and (2) measuring the expression of at least one gene selected from the group consisting of POU6F2, LMX1B, and TFAP2B in the cell population.
    Type: Grant
    Filed: June 19, 2018
    Date of Patent: December 12, 2023
    Assignee: OSAKA UNIVERSITY
    Inventors: Kohji Nishida, Motokazu Tsujikawa, Susumu Hara, Satoshi Kawasaki, Masahito Yoshihara, Masayoshi Itoh, Hideya Kawaji
  • Patent number: 10968428
    Abstract: A molecular marker expressed specifically in corneal endothelial cells, and a method for producing one or more corneal endothelial cells using the marker and a method for evaluating one or more corneal endothelial cells using the marker are provided. At least one molecule selected from the group consisting of ZP4, MRGPRX3, GRIP1, GLP1R, HTR1D, and CLRN1 is used as a marker specific to corneal endothelial cells.
    Type: Grant
    Filed: March 3, 2017
    Date of Patent: April 6, 2021
    Assignee: OSAKA UNIVERSITY
    Inventors: Kohji Nishida, Motokazu Tsujikawa, Susumu Hara, Satoshi Kawasaki, Masahito Yoshihara, Masayoshi Itoh, Hideya Kawaji, Hiroko Ohmiya
  • Publication number: 20200101200
    Abstract: Provided is a means for identifying cells suitable for transplantation into a cornea, or a means for producing a cell population suitable for transplantation into a cornea using the same. A method for producing a cell population suitable for transplantation into a cornea, the method comprising the steps of (1) preparing a cell population cultured under conditions suitable for inducing differentiation into corneal endothelial cells, and (2) measuring the expression of at least one gene selected from the group consisting of POU6F2, LMX1B, and TFAP2B in the cell population.
    Type: Application
    Filed: June 19, 2018
    Publication date: April 2, 2020
    Inventors: Kohji Nishida, Motokazu Tsujikawa, Susumu Hara, Satoshi Kawasaki, Masahito Yoshihara, Masayoshi Itoh, Hideya Kawaji
  • Patent number: 10066264
    Abstract: The present invention is to provide a method for analyzing a target nucleic acid, by which the target nucleic acid can be analyzed rapidly and easily. In order to achieve the above object, the present invention provides a method for analyzing a target nucleic acid in a sample, including the step of: analyzing the target nucleic acid in the sample by bringing the sample into contact with a label and with a primer or probe that can hybridize to the target nucleic acid. The primer or probe is immobilized on a solid phase. The label does not emit light when the primer or probe does not hybridize to the target nucleic acid, whereas the label emits light when the primer or probe has hybridized to the target nucleic acid. The analysis is carried out by detecting the light emitted from the label.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: September 4, 2018
    Assignee: KABUSHIKI KAISHA DNAFORM
    Inventors: Yoshihide Hayashizaki, Masayoshi Itoh, Takahiro Arakawa, Kengo Usui, Sotaro Uemura, Yasumasa Mitani
  • Publication number: 20170253855
    Abstract: A molecular marker expressed specifically in corneal endothelial cells, and a method for producing one or more corneal endothelial cells using the marker and a method for evaluating one or more corneal endothelial cells using the marker are provided. At least one molecule selected from the group consisting of ZP4, MRGPRX3, GRIP1, GLP1R, HTR1D, and CLRN1 is used as a marker specific to corneal endothelial cells.
    Type: Application
    Filed: September 4, 2015
    Publication date: September 7, 2017
    Applicant: OSAKA UNIVERSITY
    Inventors: Kohji NISHIDA, Motokazu TSUJIKAWA, Susumu HARA, Satoshi KAWASAKI, Masahito YOSHIHARA, Masayoshi ITOH, Hideya KAWAJI, Hiroko OHMIYA
  • Publication number: 20150152496
    Abstract: The present invention is to provide a method for analyzing a target nucleic acid, by which the target nucleic acid can be analyzed rapidly and easily. In order to achieve the above object, the present invention provides a method for analyzing a target nucleic acid in a sample, including the step of: analyzing the target nucleic acid in the sample by bringing the sample into contact with a label and with a primer or probe that can hybridize to the target nucleic acid. The primer or probe is immobilized on a solid phase. The label does not emit light when the primer or probe does not hybridize to the target nucleic acid, whereas the label emits light when the primer or probe has hybridized to the target nucleic acid. The analysis is carried out by detecting the light emitted from the label.
    Type: Application
    Filed: August 29, 2013
    Publication date: June 4, 2015
    Inventors: Yoshihide Hayashizaki, Masayoshi Itoh, Takahiro Arakawa, Kengo Usui, Sotaro Uemura, Yasumasa Mitani
  • Publication number: 20110236900
    Abstract: A method for determining the presence or absence of a mutation on the basis of the presence or absence of amplification with high reliability is provided. A target sequence including a target site contained in a sample nucleic acid is amplified using a primer that can hybridize to a region including the target site contained in the sample nucleic acid in the presence of a novel MutS having an amino acid sequence of SEQ ID NO: 2, and then the presence or absence of a mutation at the target site is determined on the basis of the presence or absence of amplification. The novel MutS binds more specifically to a mismatched base pair than to a fully-matched base pair, whereby an extension reaction caused by a mismatch-binding primer is suppressed. Thus, according to the present invention, the presence or absence of a mutation can be determined with high reliability.
    Type: Application
    Filed: November 27, 2009
    Publication date: September 29, 2011
    Applicants: RIKEN, KABUSHIKI KAISHA DNAFORM
    Inventors: Yoshihide Hayashizaki, Masayoshi Itoh, Hajime Kanamori, Kengo Usui, Kazuhito Nomura
  • Publication number: 20100221787
    Abstract: A DNA polymerase suitable for specific isothermal amplification methods and an isothermal amplification method using the DNA polymerase are provided. In the presence of a DNA polymerase including a protein described in the following item (a) or (b), an amplification reaction of a target nucleic acid sequence in a nucleic acid sample is carried out isothermally using a first primer shown in the following (X). By using the DNA polymerase, it becomes possible to carry out the amplification reaction using the primer within a shorter time than ever before. (a) a protein having an amino acid sequence represented by SEQ ID NO. 23 (b) a protein having an amino acid sequence represented by SEQ ID NO.
    Type: Application
    Filed: October 24, 2008
    Publication date: September 2, 2010
    Applicants: RIKEN, KABUSHIKI KAISHA DNAFORM
    Inventors: Yoshihide Hayashizaki, Masayoshi Itoh, Alexander Lezhava, Yoshimi Benno, Yasumasa Mitani, Hajime Kanamori
  • Publication number: 20100047862
    Abstract: This invention provides a novel DNA polymerase obtained from Bacillus smithii JCM9076, which has novel features in terms of, for example, optimal reaction conditions (e.g., optimal temperature) and enzyme activity. More particularly, a novel DNA polymerase is a pol I type DNA polymerase, which is any of proteins (a) to (f) below and has DNA polymerase activity: (a) a protein comprising the amino acid sequence as shown in SEQ ID NO: 7; (b) a protein consisting of an amino acid sequence derived from the amino acid sequence as shown in SEQ ID NO: 7 by deletion, substitution, or addition of one or several amino acid residues; (c) a protein consisting of the amino acid sequence as shown in SEQ ID NO: 9; and (d) a protein consisting of an amino acid sequence derived from the amino acid sequence as shown in SEQ ID NO: 9 by deletion, substitution, or addition of one or several amino acid residues.
    Type: Application
    Filed: October 20, 2006
    Publication date: February 25, 2010
    Inventors: Yoshihide Hayashizaki, Masayoshi Itoh, Yoshimi Benno, Alexander Lezhava
  • Publication number: 20100035249
    Abstract: The present invention provides methods for the sequencing of all RNA species within an RNA sample, such as the RNA content obtained from a cell, a tissue, a living organism, or from an artificial source. RNA molecules within the samples are labeled in a RNA-specific manner prior to immobilization on a solid support. One label is used to mark the location of the RNA molecule on the solid support, whereas the second label is used to mark selectively the S? end of full-length mRNA molecules. RNA molecules are sequenced while being bound to the solid support in one or more sequencing reactions, and sequences of individual RNA molecules can be forwarded to computational analysis for assembling sequence information from individual sequencing reads obtained from the same location on the solid support.
    Type: Application
    Filed: August 5, 2008
    Publication date: February 11, 2010
    Inventors: Yoshihide Hayashizaki, Piero Carninci, Mutsumi Katayama, Shintaro Katayama, Masayoshi Itoh, Matthias Harbers
  • Patent number: 6635215
    Abstract: Polycarbosilane is mixed with 5-35 wt % of polyvinylsilane to prepare a silicon-base polymer blend which is impregnated in silicon carbide fibers or fabrics to form a preceramic molding body which is exposed to an ionizing radiation to be rendered curing and then fired in an inert gas to produce a composite in which the silicon carbide matrix is reinforced with the silicon carbide fibers.
    Type: Grant
    Filed: September 19, 2001
    Date of Patent: October 21, 2003
    Assignee: Japan Atomic Energy Research Institute
    Inventors: Masaki Sugimoto, Yosuke Morita, Kiyohito Okamura, Masayoshi Itoh
  • Publication number: 20030065117
    Abstract: It is here intended to provide a modified silicone compound having excellent heat-resistant properties and a process of producing the same, and there is disclosed a modified silicone compound having an Si—H bond and an unsaturated bond, represented by the general formula (1): 1
    Type: Application
    Filed: September 9, 2002
    Publication date: April 3, 2003
    Inventors: Narsi Reddy Poreddy, Teruyuki Hayashi, Masato Tanaka, Jun-ichi Ishikawa, Kenji Iwata, Takaharu Abe, Masayoshi Itoh
  • Publication number: 20020056946
    Abstract: Polycarbosilane is mixed with 5-35 wt % of polyvinylsilane to prepare a silicon-base polymer blend which is impregnated in silicon carbide fibers or fabrics to form a preceramic molding body which is exposed to an ionizing radiation to be rendered curing and then fired in an inert gas to produce a composite in which the silicon carbide matrix is reinforced with the silicon carbide fibers.
    Type: Application
    Filed: September 19, 2001
    Publication date: May 16, 2002
    Inventors: Masaki Sugimoto, Yosuke Morita, Kiyohito Okamura, Masayoshi Itoh
  • Patent number: 5620934
    Abstract: Disclosed herein is a process for the preparation of alkylsilanes and alkenyl silanes by hydrosilylation of their corresponding silanes and unsaturated hydrocarbons in the presence or absence of a catalyst, a process for the preparation of polyalkenylsilanes (some of which are high molecular compounds) by the anionic coordination polymerization, radical polymerization or ionic polymerization of the alkenylsilanes, and a process for the production of silicon carbide by using these polyalkenylsilanes as prepolymers.
    Type: Grant
    Filed: March 29, 1995
    Date of Patent: April 15, 1997
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Masayoshi Itoh, Ryo Takeuchi, Kenji Iwata, Mineo Kobayashi
  • Patent number: 5596117
    Abstract: A process for the preparation of alkylsilanes and alkenyl silanes by hydrosilylation of their corresponding silanes and unsaturated hydrocarbons in the presence or absence of a catalyst. A process for the preparation of polyalkenylsilanes (some of which are novel high molecular compounds) by the anionic coordination polymerization, radical polymerization or ionic polymerization of the alkenylsilanes. A process for the production of silicon carbide by using these polyalkenylsilanes as prepolymers.
    Type: Grant
    Filed: February 3, 1995
    Date of Patent: January 21, 1997
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Masayoshi Itoh, Ryo Takeuchi, Kenji Iwata
  • Patent number: 5508363
    Abstract: Disclosed herein are a novel process for the preparation of alkylsilanes and alkenyl silanes by hydrosilylation of their corresponding silanes and unsaturated hydrocarbons in the presence or absence of a catalyst, a process for the preparation of polyalkenylsilanes (some of which are novel high molecular compounds) by the anionic coordination polymerization, radical polymerization or ionic polymerization of the alkenylsilanes, and a process for the production of silicon carbide by using these polyalkenylsilanes as prepolymers.
    Type: Grant
    Filed: March 29, 1995
    Date of Patent: April 16, 1996
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Masayoshi Itoh, Ryo Takeuchi, Kenji Iwata
  • Patent number: 5245542
    Abstract: A motor vehicle output power control system effects a slip control process for preventing the drive wheels of a motor vehicle from slipping against unstable maneuverability and a trace control process for preventing the motor vehicle from failing to make a turn due to an excessive lateral acceleration. The motor vehicle output power control system has a torque control unit for reducing the drive torque produced by the engine irrespective of controlling action of the driver. A target speed for the drive wheels is established on the basis of the motor vehicle speed, and a reference drive torque for the engine is set depending on the target speed for the drive wheels. Based on a slip of the drive wheels, a target drive torque for the engine is established. The torque control unit is controlled by an electronic controller so that the drive torque produced by the engine is equalized to the target drive torque.
    Type: Grant
    Filed: February 27, 1991
    Date of Patent: September 14, 1993
    Assignee: Mitsubishi Jidosha Kogyo Kabushiki Kaisha
    Inventors: Masayoshi Itoh, Susumu Nishikawa, Yasunobu Miyata
  • Patent number: 5197008
    Abstract: A motor vehicle output power control system quickly reduces the drive torque produced by an engine on a motor vehicle depending on the magnitude of a lateral acceleration which is produced when the motor vehicle makes a turn, or the amount by which drive wheels slips when the motor vehicle is accelerated. A target drive torque depending on the lateral acceleration and a demanded drive torque demanded by the driver of the motor vehicle are added at a predetermined ratio into a turn target drive torque, which is selected as a final target drive torque. The motor vehicle output power control system includes an electronic control unit for controlling an actuator to lower the output drive torque of the engine, independent from controlling action of the driver, such that the output drive torque of the engine is equalized to the final target drive torque.
    Type: Grant
    Filed: January 25, 1991
    Date of Patent: March 23, 1993
    Assignee: Mitsubishi Jidosha Kokyo Kabushiki Kaisha
    Inventors: Masayoshi Itoh, Kiichi Yamada, Hiroaki Yoshida, Katsunori Ohtake, Yasunobu Miyata, Masayuki Hashiguchi, Masanori Tani, Keiji Isoda, Toshio Shigehara, Hiroo Yuasa
  • Patent number: 5134903
    Abstract: A shift control device includes a forward and reverse shifting mechanism for selectively drivingly connecting and disconnecting forward and reverse gear trains to and from a vehicle drive wheel. In shifting the transmission from reverse through neutral and into drive, the forward and reverse shift mechanism remains operatively engaged with the reverse gear train until the transmission is shifted from neutral into drive, at which time the forward and reverse shift mechanism moves into operative engagement with the forward gear train. In shifting from drive through neutral into reverse, the forward and reverse shift mechanism remains operatively engaged with the forward gear train until the transmission is shifted from neutral into reverse, at which time the forward and reverse shift mechanism is moved into operative engagement with the reverse gear train.
    Type: Grant
    Filed: June 25, 1991
    Date of Patent: August 4, 1992
    Assignee: Suzuki Motor Corporation
    Inventor: Masayoshi Itoh
  • Patent number: 5041587
    Abstract: A process for preparing an organic silicon compound is here disclosed which comprises the step of reacting a halogenated hydrocarbon selected from the group consisting ##STR1## wherein each of X.sup.1 to X.sup.16 is selected from the group consisting of hydrogen, an alkyl group, alkenyl group, phenyl group, naphthyl group, alkoxy group, acyl group, alkylamino group and dialkylamino group having 1 to 20 carbon atoms which are unsubstituted or substituted and a halogen atom; and each of at least one of X.sup.1 to X.sup.4, at least one of X.sup.8 to X.sup.10 and at least one of X.sup.11 to X.sup.16 is a halogen atom,with a silane selected from the group consisting of SiH.sub.4, Si.sub.2 H.sub.6 and Si.sub.3 H.sub.8.
    Type: Grant
    Filed: February 12, 1990
    Date of Patent: August 20, 1991
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Masayoshi Itoh, Kenji Iwata, Noriyuki Yanagawa, Tetsura Utsumi, Mineo Kobayashi, Ryo Takeuchi, Tomohiro Abe