Patents by Inventor Keisuke Matsuura

Keisuke Matsuura 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).

  • Publication number: 20230028095
    Abstract: A semiconductor nanoparticle aggregate that is an aggregate of core/shell type semiconductor nanoparticles including a core including In and P and a shell having one or more layers, in which a peak wavelength of an emission spectrum of the semiconductor nanoparticle aggregate is from 515 nm to 535 nm and a full width at half maximum of the emission spectrum is 43 nm or less. For each semiconductor nanoparticle, (1) an average value of a full width at half maximum of an emission spectrum is 15 nm or more, (2) a standard deviation of a peak wavelength of the emission spectrum is 12 nm or less, and (3) a standard deviation of the full width at half maximum of the emission spectrum is 2 nm or more.
    Type: Application
    Filed: December 4, 2020
    Publication date: January 26, 2023
    Inventors: Naoki UMEDA, Takafumi MORIYAMA, Hirokazu SASAKI, Keisuke MATSUURA
  • Patent number: 11505742
    Abstract: The purpose of the present invention to provide semiconductor nanoparticles substantially containing no Cd, and which have an increased absorption coefficient to blue light while maintaining high stability. Semiconductor nanoparticles having a core containing at least In and P, and a shell having one or more layers, wherein at least one layer of the shell is ZnSeTe (wherein Te/(Se+Te)=0.03 to 0.50); and the semiconductor nanoparticles cause, when the semiconductor nanoparticles are dispersed in a dispersion medium to yield a dispersion liquid with a concentration of 1 mg/mL in inorganic mass, the dispersion liquid to have an absorbance of 0.9 or higher with respect to light having a wavelength of 450 nm at an optical path length of 1 cm.
    Type: Grant
    Filed: September 5, 2019
    Date of Patent: November 22, 2022
    Assignee: SHOEI CHEMICAL INC.
    Inventors: Takafumi Moriyama, Hirokazu Sasaki, Makoto Kido, Keisuke Matsuura, Yuko Mitsuka, Naoki Sakura
  • Publication number: 20220195298
    Abstract: Provided are core/shell type semiconductor nanoparticles including: a core including In and P; and a shell having one or more layers. The semiconductor nanoparticles further include at least Zn, Se, and at least one halogen. In the semiconductor nanoparticles, molar ratios of P, Zn, Se, and halogen each relative to In in terms of atoms are P: 0.20˜0.95, Zn: 11.00˜50.00, Se: 7.00˜25.00, and halogen: 0.80˜15.00. According to the present invention, core/shell type semiconductor nanoparticles that include the core including In and P and the shell including Zn and Se as main components, and have high quantum yield, a small full width at half maximum, and small Stokes shift can be provided.
    Type: Application
    Filed: February 27, 2020
    Publication date: June 23, 2022
    Inventors: Takafumi MORIYAMA, Hirokazu SASAKI, Keisuke MATSUURA
  • Patent number: 11145792
    Abstract: The purpose of the present invention to provide a wavelength conversion layer containing semiconductor nanoparticles substantially containing no Cd, and which have an increased absorption coefficient to blue light while maintaining high stability. A wavelength conversion layer containing semiconductor nanoparticles, wherein the wavelength conversion layer can convert light having a wavelength of 450 nm to light having a peak wavelength of 500 nm to 550 nm, or light having a peak wavelength of 600 nm to 660 nm; each of the semiconductor nanoparticles contained in the wavelength conversion layer has a core and a shell having one or more layers; the core contains In and P; and at least one layer of the shell is ZnXTe (wherein X represents Se or S, or both Se and S).
    Type: Grant
    Filed: September 5, 2019
    Date of Patent: October 12, 2021
    Assignee: SHOEI CHEMICAL INC.
    Inventors: Takafumi Moriyama, Hirokazu Sasaki, Makoto Kido, Keisuke Matsuura, Yuko Mitsuka, Naoki Sakura
  • Publication number: 20200083406
    Abstract: The purpose of the present invention to provide a wavelength conversion layer containing semiconductor nanoparticles substantially containing no Cd, and which have an increased absorption coefficient to blue light while maintaining high stability. A wavelength conversion layer containing semiconductor nanoparticles, wherein the wavelength conversion layer can convert light having a wavelength of 450 nm to light having a peak wavelength of 500 nm to 550 nm, or light having a peak wavelength of 600 nm to 660 nm; each of the semiconductor nanoparticles contained in the wavelength conversion layer has a core and a shell having one or more layers; the core contains In and P; and at least one layer of the shell is ZnXTe (wherein X represents Se or S, or both Se and S).
    Type: Application
    Filed: September 5, 2019
    Publication date: March 12, 2020
    Inventors: Takafumi Moriyama, Hirokazu Sasaki, Makoto Kido, Keisuke Matsuura, Yuko Mitsuka, Naoki Sakura
  • Publication number: 20200079997
    Abstract: The purpose of the present invention to provide semiconductor nanoparticles substantially containing no Cd, and which have an increased absorption coefficient to blue light while maintaining high stability. Semiconductor nanoparticles having a core containing at least In and P, and a shell having one or more layers, wherein at least one layer of the shell is ZnSeTe (wherein Te/(Se+Te)=0.03 to 0.50); and the semiconductor nanoparticles cause, when the semiconductor nanoparticles are dispersed in a dispersion medium to yield a dispersion liquid with a concentration of 1 mg/mL in inorganic mass, the dispersion liquid to have an absorbance of 0.9 or higher with respect to light having a wavelength of 450 nm at an optical path length of 1 cm.
    Type: Application
    Filed: September 5, 2019
    Publication date: March 12, 2020
    Inventors: Takafumi Moriyama, Hirokazu Sasaki, Makoto Kido, Keisuke Matsuura, Yuko Mitsuka, Naoki Sakura
  • Patent number: 10032324
    Abstract: An air bag ECU includes an ECU communication unit communicating with an external sensor (for example, a front right acceleration sensor) and a faulty sensor mount determination unit determining whether a faulty sensor having been diagnosed as being faulty before is connected to the air bag ECU based on failure history data indicating whether the external sensor has been diagnosed as being faulty before. The faulty sensor mount determination unit compares identification data recorded in, for example, a faulty sensor ID recording unit, for individually identifying an external sensor having been diagnosed as being faulty before with the identification data of the external sensor connected to the air bag ECU and determines whether a faulty sensor is connected to the air bag ECU.
    Type: Grant
    Filed: May 19, 2014
    Date of Patent: July 24, 2018
    Assignee: Bosch Corporation
    Inventors: Ryojiro Akanuma, Kenji Arai, Keisuke Matsuura
  • Patent number: 9601891
    Abstract: A cable assembling apparatus for allowing a terminal and a electric wire to be accurately crimped and to resolve increase of facility cost incurred by separation of a press and a crimping machine, includes a press having a downside press mold having a plurality of types of dies arranged in parallel, an electric wire support jig arranged in parallel, having a metal plate guide at an end thereof entering into between the plurality of types of dies, and a feeder adapted to lift the electric wire support jig together with the metal plate above the dies of the downside press mold, and advance and descend the electric wire support jig to an adjacent die of next process. Furthermore, an electric wire chuck disposed in a midstream die of the plurality of types of dies and supplying the electric wire support jig with the electric wire is disposed.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: March 21, 2017
    Assignee: Yazaki Corporation
    Inventors: Yasuto Yamauchi, Keisuke Matsuura, Tomoyuki Kojima, Yuusuke Yamamoto
  • Publication number: 20160140784
    Abstract: An air bag ECU includes an ECU communication unit communicating with an external sensor (for example, a front right acceleration sensor) and a faulty sensor mount determination unit determining whether a faulty sensor having been diagnosed as being faulty before is connected to the air bag ECU based on failure history data indicating whether the external sensor has been diagnosed as being faulty before. The faulty sensor mount determination unit compares identification data recorded in, for example, a faulty sensor ID recording unit, for individually identifying an external sensor having been diagnosed as being faulty before with the identification data of the external sensor connected to the air bag ECU and determines whether a faulty sensor is connected to the air bag ECU.
    Type: Application
    Filed: May 19, 2014
    Publication date: May 19, 2016
    Inventors: Ryojiro Akanuma, Kenji Arai, Keisuke Matsuura
  • Patent number: 9199927
    Abstract: [Problem] Provided is a compound which is useful as an agent for preventing and/or treating renal diseases. [Means for Solution] The present inventors have conducted extensive studies on compounds having a trypsin inhibitory action, and as a result, they have found that a guanidinobenzoic acid compound has a trypsin inhibitory action, thereby completing the present invention. The guanidinobenzoic acid compound of the present invention can be used as an agent for preventing and/or treating renal disease as an agent which will substitute low-protein diet therapy, and an agent for preventing and/or treating trypsin-related diseases, for example, pancreatitis, gastroesophageal reflux disease, hepatic encephalopathy, influenza, and the like.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: December 1, 2015
    Assignee: Astellas Pharma Inc.
    Inventors: Jiro Fujiyasu, Kazuhiko Ohne, Susumu Yamaki, Tomoyoshi Imaizumi, Takeshi Hondo, Keisuke Matsuura, Tomohki Satou, Satoshi Sasamura
  • Patent number: 9039787
    Abstract: A solid electrolytic capacitor includes a capacitor element, an anode terminal, and a cathode terminal. The anode terminal is electrically connected to the anode lead of the capacitor element through a pillow portion formed on a surface of the anode terminal. The cathode terminal is electrically connected to the cathode layer of the capacitor element. A method of manufacturing the solid electrolytic capacitor includes steps (a) and (b). In the step (a), a first printed portion to become the pillow portion is formed by performing printing on a predetermined place of the surface of the anode terminal with paste containing a conductive material and resin. In the step (b), the anode lead is connected to a tip end part of the first printed portion.
    Type: Grant
    Filed: November 26, 2012
    Date of Patent: May 26, 2015
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Eizo Fujii, Keisuke Matsuura, Shota Kurihara, Hitoshi Ibuta
  • Publication number: 20140378459
    Abstract: [Problem] Provided is a compound which is useful as an agent for preventing and/or treating renal diseases. [Means for Solution] The present inventors have conducted extensive studies on compounds having a trypsin inhibitory action, and as a result, they have found that a guanidinobenzoic acid compound has a trypsin inhibitory action, thereby completing the present invention. The guanidinobenzoic acid compound of the present invention can be used as an agent for preventing and/or treating renal disease as an agent which will substitute low-protein diet therapy, and an agent for preventing and/or treating trypsin-related diseases, for example, pancreatitis, gastroesophageal reflux disease, hepatic encephalopathy, influenza, and the like.
    Type: Application
    Filed: September 14, 2012
    Publication date: December 25, 2014
    Applicant: ASTELLAS PHARMA INC.
    Inventors: Jiro Fujiyasu, Kazuhiko Ohne, Susumu Yamaki, Tomoyoshi Imaizumi, Takeshi Hondo, Keisuke Matsuura, Tomohki Satou, Satoshi Sasamura
  • Publication number: 20140000102
    Abstract: A cable assembling apparatus for allowing a terminal and a electric wire to be accurately crimped and to resolve increase of facility cost incurred by separation of a press and a crimping machine, includes a press having a downside press mold having a plurality of types of dies arranged in parallel, an electric wire support jig arranged in parallel, having a metal plate guide at an end thereof entering into between the plurality of types of dies, and a feeder adapted to lift the electric wire support jig together with the metal plate above the dies of the downside press mold, and advance and descend the electric wire support jig to an adjacent die of next process. Furthermore, an electric wire chuck disposed in a midstream die of the plurality of types of dies and supplying the electric wire support jig with the electric wire is disposed.
    Type: Application
    Filed: June 29, 2012
    Publication date: January 2, 2014
    Applicant: Yazaki Corporation
    Inventors: Yasuto Yamauchi, Keisuke Matsuura, Tomoyuki Kojima, Yuusuke Yamamoto
  • Patent number: 8598355
    Abstract: [Problems] A compound, which is useful as an active ingredient of a pharmaceutical composition, for example, a pharmaceutical composition for treating chronic renal failure and/or diabetic nephropathy, is provided. [Solving Means] The present inventors have conducted extensive studies on a compound having an EP4 receptor antagonistic activity, and confirmed that the amide compound of the present invention has an EP4 receptor antagonistic activity, thereby completing the present invention. The amide compound of the present invention has an EP4 receptor antagonistic activity, and can be used as an active ingredient of a pharmaceutical composition for preventing and/or treating various EP4-related diseases, for example, chronic renal failure and/or diabetic nephropathy, and the like.
    Type: Grant
    Filed: May 12, 2009
    Date of Patent: December 3, 2013
    Assignee: Astellas Pharma Inc.
    Inventors: Eisuke Nozawa, Ryotaro Ibuka, Kazuhiro Ikegai, Keisuke Matsuura, Tatsuya Zenkoh, Ryushi Seo, Susumu Watanuki, Michihito Kageyama
  • Patent number: 8030489
    Abstract: Provided is a compound which is useful as a therapeutic agent for chronic renal insufficiency and a therapeutic agent for diabetic nephropathy. The present inventors have made extensive studies on an ornithine derivative having an antagonistic action against an EP4 receptor, and as a result, they have found that by introducing cycloalkanediyl at a C terminal of the ornithine part of the compound of the present invention, the physicochemical properties such as solubility, and the like can be improved, thereby giving further preferred properties as a pharmaceutical. Therefore, they have completed the present invention. The compound of the present invention exhibits a good antagonistic action against an EP4 receptor, and thus, it is useful as a therapeutic agent for chronic renal insufficiency and diabetic nephropathy.
    Type: Grant
    Filed: March 25, 2008
    Date of Patent: October 4, 2011
    Assignee: Astellas Pharma Inc.
    Inventors: Tatsuya Zenkoh, Eisuke Nozawa, Keisuke Matsuura, Ryushi Seo
  • Publication number: 20110144153
    Abstract: [Problems] A compound, which is useful as an active ingredient of a pharmaceutical composition, for example, a pharmaceutical composition for treating chronic renal failure and/or diabetic nephropathy, is provided. [Solving Means] The present inventors have conducted extensive studies on a compound having an EP4 receptor antagonistic activity, and confirmed that the amide compound of the present invention has an EP4 receptor antagonistic activity, thereby completing the present invention. The amide compound of the present invention has an EP4 receptor antagonistic activity, and can be used as an active ingredient of a pharmaceutical composition for preventing and/or treating various EP4-related diseases, for example, chronic renal failure and/or diabetic nephropathy, and the like.
    Type: Application
    Filed: May 12, 2009
    Publication date: June 16, 2011
    Applicant: Astellas Pharma Inc.
    Inventors: Eisuke Nozawa, Ryotaro Ibuka, Kazuhiro Ikegai, Keisuke Matsuura, Tatsuya Zenkoh, Ryushi Seo, Susumu Watanuki, Michihito Kageyama
  • Publication number: 20110082133
    Abstract: [Problems] A useful compound which can be used as a pharmaceutical, in particular, an agent for treating peripheral arterial occlusive disease is provided. [Means for Solution] The present inventors have conducted extensive studies on EP4 receptor agonists, and as a result, have found that a novel pyridone compound, in which a group having an acidic group is substituted at the 1-position of the pyridone ring, the 6-position is bonded with an aromatic ring group via a linking part, and the linking part contains a nitrogen atom, has an excellent EP4 receptor agonistic action, thereby completing the present invention. Since the compound of the present invention has an excellent EP4 receptor agonistic action, it is useful as a pharmaceutical, in particular, as an agent for treating peripheral arterial occlusive disease.
    Type: Application
    Filed: June 16, 2009
    Publication date: April 7, 2011
    Inventors: Takashi Kamikubo, Masanori Miura, Takao Okuda, Keisuke Maki, Fukushi Hirayama, Ayako Moritomo, Yuriko Komiya, Keisuke Matsuura, Ryotaro Ibuka
  • Publication number: 20110028463
    Abstract: [Problems] To provide a compound that is useful as an agent for treating chronic renal insufficiency or an agent for treating diabetic nephropathy. [Means for Solving Problems] The present inventors have conducted extensive studies on a compound having an EP4 receptor antagonistic action, and as a result, they have found that various amide derivatives having a carboxylic group or an equivalent thereof exhibit an excellent EP4 receptor antagonistic action, thereby completing the present invention. Since the compound of the present invention has an excellent EP4 receptor antagonistic action, it is useful as an agent for preventing and/or treating chronic renal insufficiency or diabetic nephropathy.
    Type: Application
    Filed: July 2, 2008
    Publication date: February 3, 2011
    Applicant: Astellas Pharma Inc.
    Inventors: Eisuke Nozawa, Ryotaro Ibuka, Kazuhiro Ikegai, Keisuke Matsuura, Tatsuya Zenkoh, Ryushi Seo
  • Publication number: 20100216803
    Abstract: Provided is a compound which is useful as a therapeutic agent for chronic renal insufficiency and a therapeutic agent for diabetic nephropathy. The present inventors have made extensive studies on an ornithine derivative having an antagonistic action against an EP4 receptor, and as a result, they have found that by introducing cycloalkanediyl at a C terminal of the ornithine part of the compound of the present invention, the physicochemical properties such as solubility, and the like can be improved, thereby giving further preferred properties as a pharmaceutical. Therefore, they have completed the present invention. The compound of the present invention exhibits a good antagonistic action against an EP4 receptor, and thus, it is useful as a therapeutic agent for chronic renal insufficiency and diabetic nephropathy.
    Type: Application
    Filed: March 25, 2008
    Publication date: August 26, 2010
    Applicant: Astellas Pharma Inc.
    Inventors: Tatsuya Zenkoh, Eisuke Nozawa, Keisuke Matsuura, Ryushi Seo
  • Patent number: 7585886
    Abstract: [Problem] To provide a compound which may be used in treating diseases in which a calcium sensing receptor (CaSR) is concerned, particularly hyperparathyroidism. [Means for Resolution] It was found that novel pyrrolidine derivatives which are characterized by the possession of aminomethyl group substituted with arylalkyl group or the like, or salts thereof, have excellent CaSR agonistic regulatory activity and also have excellent selectivity with CYP2D6 inhibitory activity having a possibility of causing drug interaction. Based on the above, these novel pyrrolidine derivatives are useful as therapeutic agents for treating diseases in which CaSR is concerned (hyperparathyroidism, renal osteodystrophy, hypercalcemia and the like).
    Type: Grant
    Filed: May 18, 2006
    Date of Patent: September 8, 2009
    Assignee: Astellas Pharma Inc.
    Inventors: Shunichiro Hachiya, Makoto Oku, Hana Mukai, Takashi Shin, Keisuke Matsuura, Ryushi Seo, Takashi Kamikubo, Yoh Terada, Masanao Sanagi, Kousei Yoshihara, Taisuke Takahashi