Patents by Inventor Ryuta Yamazaki

Ryuta Yamazaki 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: 12102641
    Abstract: Provided is a compound or a pharmaceutically acceptable salt thereof which is superior in an action inducing degradation of BRD4 protein and useful as a therapeutic agent for cancer. A compound represented by the following formula (I) or a pharmaceutically acceptable salt thereof: wherein each symbol is as defined in the DESCRIPTION.
    Type: Grant
    Filed: February 5, 2021
    Date of Patent: October 1, 2024
    Assignee: MITSUBISHI TANABE PHARMA CORPORATION
    Inventors: Kiyomi Ohba, Yasuki Niwa, Tetsuji Matsudaira, Maiko Hamada, Ryuta Yamazaki, Tatsuya Ibuki
  • Patent number: 11890288
    Abstract: Provided is a compound or a pharmaceutically acceptable salt thereof which is superior in an action inducing degradation of BRD4 protein and useful as a therapeutic agent for cancer. A compound represented by the following formula (I) or a pharmaceutically acceptable salt thereof: wherein each symbol is as defined in the DESCRIPTION.
    Type: Grant
    Filed: July 20, 2023
    Date of Patent: February 6, 2024
    Assignee: MITSUBISHI TANABE PHARMA CORPORATION
    Inventors: Kiyomi Ohba, Yasuki Niwa, Tetsuji Matsudaira, Maiko Hamada, Ryuta Yamazaki, Tatsuya Ibuki
  • Publication number: 20230364105
    Abstract: Provided is a compound or a pharmaceutically acceptable salt thereof which is superior in an action inducing degradation of BRD4 protein and useful as a therapeutic agent for cancer. A compound represented by the following formula (I) or a pharmaceutically acceptable salt thereof: wherein each symbol is as defined in the DESCRIPTION.
    Type: Application
    Filed: July 20, 2023
    Publication date: November 16, 2023
    Applicant: MITSUBISHI TANABE PHARMA CORPORATION
    Inventors: Kiyomi OHBA, Yasuki NIWA, Tetsuji MATSUDAIRA, Maiko HAMADA, Ryuta YAMAZAKI, Tatsuya IBUKI
  • Publication number: 20230146717
    Abstract: Provided is a compound or a pharmaceutically acceptable salt thereof which is superior in an action inducing degradation of BRD4 protein and useful as a therapeutic agent for cancer. A compound represented by the following formula (I) or a pharmaceutically acceptable salt thereof: wherein each symbol is as defined in the DESCRIPTION.
    Type: Application
    Filed: February 5, 2021
    Publication date: May 11, 2023
    Applicant: MITSUBISHI TANABE PHARMA CORPORATION
    Inventors: Kiyomi OHBA, Yasuki NIWA, Tetsuji MATSUDAIRA, Maiko HAMADA, Ryuta YAMAZAKI, Tatsuya IBUKI
  • Patent number: 11542273
    Abstract: Provided are a compound superior in a cytotoxic action on cancer cells, an action inducing degradation of BET protein in cancer cells, and an inhibitory action on the binding of BET protein and acetylated histone, and useful as an anticancer agent, a BET protein degradation inducer or a BET protein inhibitor. A compound represented by the following formula (I) wherein each symbol is as defined in the specification, or a pharmacologically acceptable salt thereof.
    Type: Grant
    Filed: July 4, 2019
    Date of Patent: January 3, 2023
    Assignee: MITSUBISHI TANABE PHARMA CORPORATION
    Inventors: Ryuta Yamazaki, Tatsuya Ibuki, Yuichi Sawaguchi, Kiyomi Ohba, Maiko Hamada, Yasuki Niwa, Yuko Ishida, Hideto Maruyama, Shiki Matsuki, Minoru Tanaka
  • Publication number: 20210284654
    Abstract: Provided are a compound superior in a cytotoxic action on cancer cells, an action inducing degradation of BET protein in cancer cells, and an inhibitory action on the binding of BET protein and acetylated histone, and useful as an anticancer agent, a BET protein degradation inducer or a BET protein inhibitor.
    Type: Application
    Filed: July 4, 2019
    Publication date: September 16, 2021
    Applicants: MITSUBISHI TANABE PHARMA CORPORATION, KABUSHIKI KAISHA YAKULT HONSHA
    Inventors: Ryuta YAMAZAKI, Tatsuya IBUKI, Yuichi SAWAGUCHI, Kiyomi OHBA, Maiko HAMADA, Yasuki NIWA, Yuko ISHIDA, Hideto MARUYAMA, Shiki MATSUKI, Minoru TANAKA
  • Patent number: 10724980
    Abstract: A humidity detector a humidity sensor detecting a relative humidity of an air inside a sensor case housing the humidity sensor. The humidity detector has an air volume obtaining section, a flow direction obtaining section, a setting section, and a correction section. The air volume obtaining section obtains air volume information correlated with an air volume of the air flowing around the humidity sensor. The flow direction obtaining section obtains flow direction information correlated with a flow direction of the air flowing around the humidity sensor. The setting section sets correction factors configuring a dynamic compensator based on the air volume information and the flow direction information. The dynamic compensator compensates for a response delay of the humidity sensor. The correction section corrects a detection value, which is detected by the humidity sensor, by using the dynamic compensator to obtain the relative humidity of the air.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: July 28, 2020
    Assignee: DENSO CORPORATION
    Inventors: Ryuta Yamazaki, Syo Okabe, Tatsumi Kumada, Kazuaki Takemoto, Kyoichiro Yamamoto
  • Publication number: 20180209929
    Abstract: A humidity detector a humidity sensor detecting a relative humidity of an air inside a sensor case housing the humidity sensor. The humidity detector has an air volume obtaining section, a flow direction obtaining section, a setting section, and a correction section. The air volume obtaining section obtains air volume information correlated with an air volume of the air flowing around the humidity sensor. The flow direction obtaining section obtains flow direction information correlated with a flow direction of the air flowing around the humidity sensor. The setting section sets correction factors configuring a dynamic compensator based on the air volume information and the flow direction information. The dynamic compensator compensates for a response delay of the humidity sensor. The correction section corrects a detection value, which is detected by the humidity sensor, by using the dynamic compensator to obtain the relative humidity of the air.
    Type: Application
    Filed: July 20, 2016
    Publication date: July 26, 2018
    Inventors: Ryuta YAMAZAKI, Syo OKABE, Tatsumi KUMADA, Kazuaki TAKEMOTO, Kyoichiro YAMAMOTO
  • Patent number: 9693581
    Abstract: A method is disclosed for producing, only with mechanical treatment, high-quality rice flour having a rounded particle shape, which is equivalent to fine flour obtained by using enzymes, has characteristics close to the characteristics of wheat flour, and is suitable for production of bread, cakes, noodles, and the like. In order to attain the object, a method for producing rice flour includes: providing primary crushing material rice subjected to soaking and adjustment of moisture content with a disintegrating and sizing device, fine grinding the primary crushed rice with an air mill, and then drying the fine ground rice with an air flow dryer.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: July 4, 2017
    Assignee: NARA MACHINERY CO., LTD.
    Inventors: Katsuhiko Sasako, Hidetoshi Iwamatsu, Ryuta Yamazaki, Kwan-Hei Park
  • Patent number: 9174979
    Abstract: A novel compound having an excellent NF?B inhibitory effect is provided and specifically disclosed is a compound represented by the following formula (1) or a salt thereof: wherein, R1 represents a hydrogen atom, a lower alkyl group, a lower alkyloxy group, or a halogen atom; R2 represents a hydroxyl group, or a lower alkyloxy group; R3 represents a hydrogen atom, a lower alkyl group, or a halogen atom; R4 represents a hydrogen atom or a lower alkyloxy group; R5 represents a hydrogen atom, a lower alkyloxy group, a halogen atom, a hydroxyl group, or a methylenedioxy group formed together with R6 or an isopropylidenedioxy group formed together with R6; R6 represents a hydrogen atom, a lower alkyloxy group, or a methylenedioxy group formed together with R5 or an isopropylidenedioxy group formed together with R5; R7 represents a hydrogen atom or a lower alkyl group; and R8 represents a hydrogen atom, a hydroxyl group, an amino group, or a lower alkylcarbonyloxy group (excluding the case where R1, R3, R4 and R7 a
    Type: Grant
    Filed: October 23, 2009
    Date of Patent: November 3, 2015
    Assignee: KABUSHIKI KAISHA YAKULT HONSHA
    Inventors: Takashi Ikeda, Seigo Sawada, Takashi Yaegashi, Takeshi Matsuzaki, Shusuke Hashimoto, Ryuta Yamazaki
  • Publication number: 20140343017
    Abstract: Provided is a highly safe and effective compound represented by the following general formula (1) or a salt thereof which acts on tubulin and has an anticancer effect, wherein Ar represents an aryl group or a heteroaryl group; Z1, Z2, Z3, and Z4 each independently represent CH, a nitrogen atom, an oxygen atom, or a sulfur atom; R1 represents a hydrogen atom, a halogen atom, an alkyl group, or the like; R2 and R3 are the same or different and each represent a hydrogen atom, a halogen atom, a carboxyl group, or the like; n units of R4 are the same or different and each represent a hydrogen atom, an alkyl group, or the like; and n represents a number of 0 to 4.
    Type: Application
    Filed: January 24, 2013
    Publication date: November 20, 2014
    Applicant: Kabushiki Kaisha Yakult Honsha
    Inventors: Takashi Ikeda, Masahiro Ono, Satoshi Ueno, Ryuta Yamazaki, Takashi Yaegashi, Takeshi Matsuzaki
  • Publication number: 20140306036
    Abstract: A method is disclosed for producing, only with mechanical treatment, high-quality rice flour having a rounded particle shape, which is equivalent to fine flour obtained by using enzymes, has characteristics close to the characteristics of wheat flour, and is suitable for production of bread, cakes, noodles, and the like. In order to attain the object, a method for producing rice flour includes: providing primary crushing material rice subjected to soaking and adjustment of moisture content with a disintegrating and sizing device, fine grinding the primary crushed rice with an air mill, and then drying the fine ground rice with an air flow dryer.
    Type: Application
    Filed: December 13, 2012
    Publication date: October 16, 2014
    Inventors: Katsuhiko Sasako, Hidetoshi Iwamatsu, Ryuta Yamazaki, Kwan-Hei Park
  • Patent number: 8697742
    Abstract: A breast cancer resistance protein (BCRP/ABCG2) inhibitor. The BCRP inhibitor contains, as an active ingredient, an acrylonitrile derivative or a salt thereof.
    Type: Grant
    Filed: March 29, 2006
    Date of Patent: April 15, 2014
    Assignee: Kabushiki Kaisha Yakult Honsha
    Inventors: Ryuta Yamazaki, Yukiko Nishiyama, Tomio Furuta, Takeshi Matsuzaki, Hiroshi Hatano, Oh Yoshida, Masato Nagaoka, Ritsuo Aiyama, Shusuke Hashimoto, Yoshikazu Sugimoto
  • Patent number: 8569327
    Abstract: A novel compound having an excellent NF?B inhibitory effect is provided. Specifically disclosed is a compound represented by the following formula (1) or a salt thereof: wherein, R1 represents a hydrogen atom, a lower alkyl group, or the like; R2 represents a hydrogen atom, a lower alkyl group, a halogen atom, or the like; R3 represents a hydrogen atom, a lower alkyl group, a hydroxyl group, or a halogen atom; R4 represents a hydrogen atom or a lower alkyloxy group; R5 represents a hydrogen atom, a lower alkyloxy group, a halogen atom, a hydroxyl group, or a methylenedioxy group formed together with R6 or an isopropylidenedioxy group formed together with R6; R6 represents a hydrogen atom, a lower alkyloxy group, or a methylenedioxy group formed together with R5 or an isopropylidenedioxy group formed together with R5; R7 represents a hydrogen atom or a lower alkyl group; and R8 represents a hydrogen atom, a hydroxyl group, an amino group, a lower alkylcarbonyloxy group, or a halogen atom.
    Type: Grant
    Filed: October 23, 2009
    Date of Patent: October 29, 2013
    Assignee: Kabushiki Kaisha Yakult Honsha
    Inventors: Takashi Ikeda, Seigo Sawada, Takashi Yaegashi, Takeshi Matsuzaki, Shusuke Hashimoto, Ryuta Yamazaki
  • Publication number: 20110201638
    Abstract: A novel compound having an excellent NF?B inhibitory effect is provided and specifically disclosed is a compound represented by the following formula (1) or a salt thereof: wherein, R1 represents a hydrogen atom, a lower alkyl group, a lower alkyloxy group, or a halogen atom; R2 represents a hydroxyl group, or a lower alkyloxy group; R3 represents a hydrogen atom, a lower alkyl group, or a halogen atom; R4 represents a hydrogen atom or a lower alkyloxy group; R5 represents a hydrogen atom, a lower alkyloxy group, a halogen atom, a hydroxyl group, or a methylenedioxy group formed together with R6 or an isopropylidenedioxy group formed together with R6; R6 represents a hydrogen atom, a lower alkyloxy group, or a methylenedioxy group formed together with R5 or an isopropylidenedioxy group formed together with R5; R7 represents a hydrogen atom or a lower alkyl group; and R8 represents a hydrogen atom, a hydroxyl group, an amino group, or a lower alkylcarbonyloxy group (excluding the case where R1, R3, R4 and R7
    Type: Application
    Filed: October 23, 2009
    Publication date: August 18, 2011
    Applicant: KABUSHIKI KAISHA YAKULT HONSHA
    Inventors: Takashi Ikeda, Seigo Sawada, Takashi Yaegashi, Takeshi Matsuzaki, Shusuke Hashimoto, Ryuta Yamazaki
  • Publication number: 20110201637
    Abstract: A novel compound having an excellent NF?B inhibitory effect is provided. Specifically disclosed is a compound represented by the following formula (1) or a salt thereof: wherein, R1 represents a hydrogen atom, a lower alkyl group, or the like; R2 represents a hydrogen atom, a lower alkyl group, a halogen atom, or the like; R3 represents a hydrogen atom, a lower alkyl group, a hydroxyl group, or a halogen atom; R4 represents a hydrogen atom or a lower alkyloxy group; R5 represents a hydrogen atom, a lower alkyloxy group, a halogen atom, a hydroxyl group, or a methylenedioxy group formed together with R6 or an isopropylidenedioxy group formed together with R6; R6 represents a hydrogen atom, a lower alkyloxy group, or a methylenedioxy group formed together with R5 or an isopropylidenedioxy group formed together with R5; R7 represents a hydrogen atom or a lower alkyl group; and R8 represents a hydrogen atom, a hydroxyl group, an amino group, a lower alkylcarbonyloxy group, or a halogen atom.
    Type: Application
    Filed: October 23, 2009
    Publication date: August 18, 2011
    Applicant: KABUSHIKI KAISHA YAKULT HONSHA
    Inventors: Takashi Ikeda, Seigo Sawada, Takashi Yaegashi, Takeshi Matsuzaki, Shusuke Hashimoto, Ryuta Yamazaki
  • Publication number: 20100249089
    Abstract: The present invention relates to a breast cancer resistance protein (BCRP/ABCG2) inhibitor. The invention provides an acrylonitrile derivative represented by formula (1): (wherein A represents an optionally substituted 3- to 8-membered heterocyclic ring) or a salt thereof.
    Type: Application
    Filed: December 2, 2008
    Publication date: September 30, 2010
    Applicant: KABUSHIKI KAISHA YAKULT HONSHA
    Inventors: Ryuta Yamazaki, Hiroshi Hatano, Takashi Yaegashi, Yoshiaki Igarashi, Oh Yoshida, Yoshikazu Sugimoto
  • Publication number: 20090253656
    Abstract: The present invention is directed to a breast cancer resistance protein (BCRP/ABCG2) inhibitor. The BCRP inhibitor contains, as an active ingredient, an acrylonitrile derivative represented by formula (1): wherein one of R1 and R2 represents a cyano group and the other represents a hydrogen atom; Ar1 represents a group selected from among the groups represented by formulas (2) to (4): and Ar2 represents an aromatic hydrocarbon group having a condensed ring which may be substituted by a halogen atom, or a group selected from among the groups represented by the following formulas (5) to (15): or a salt thereof.
    Type: Application
    Filed: March 29, 2006
    Publication date: October 8, 2009
    Applicant: Kabushiki Kaisha Yakult Honsha
    Inventors: Ryuta Yamazaki, Yukiko Nishiyama, Tomio Furuta, Takeshi Matsuzaki, Hiroshi Hatano, Oh Yoshida, Masato Nagaoka, Ritsuo Aiyama, Shusuke Hashimoto, Yoshikazu Sugimoto
  • Publication number: 20080287374
    Abstract: The invention provides a cancer cell useful in screening BCRP-inhibitors, and a BCRP-inhibitor. The BCRP-inhibitor contains, as the active ingredient, a flavonoid represented by any of the following formulae (1), (2), (3), (4), and (5): and glycosides, esters, or salts thereof; and an anticancer agent containing the BCRP-inhibitor together with an anticancer agent available as the substrate of BCRP.
    Type: Application
    Filed: July 29, 2008
    Publication date: November 20, 2008
    Applicant: KABUSHIKI KAISHA YAKULT HONSHA
    Inventors: Ryuta YAMAZAKI, Yukiko Nishiyama, Tomio Furuta, Takeshi Matsuzaki, Hiroshi Hatano, Sachiko Matsumoto, Ritsuo Aiyama, Oh Yoshida, Masato Nagaoka, Shusuke Hashimoto, Yoshikazu Sugimoto
  • Patent number: 7371773
    Abstract: The invention provides a drug which inhibits BCRP. A breast cancer resistance protein inhibitor containing, as an active ingredient, a diphenylacrylonitrile derivative represented by the following formula (1): [wherein, each of 8 R's, which are the same or different from one another, represents a hydrogen atom, a hydroxyl group, a nitro group, an amino group, an acetylamino group (—NHCOCH3 group); a cyano group (—CN group); a formyl group (—CHO group), —COOR1 (R1 is hydrogen or C1-C4 alkyl), —O(CH2)nCOOR2 (n=1?7: R2 is hydrogen or C1-C4 alkyl), —OOCCH2CH2COOR3 (R3 is hydrogen, C1-C4 alkyl, (Z)-2-(3,4-dimethoxy-phenyl)-3-(4-hydroxy-phenyl)-acrylonitrile, or glycopyranosyl), a C1-C8 alkoxy group, a C1-C4 alkyl group, a halogen atom, a C1-C4 alkoxy C1-C4 alkoxy C1-C4 alkoxy group, a C2-C8 acyloxy group, a C2-C8 halogenoacyloxy group, a methylenedioxy group, a trifluoromethyl group, a phosphate group (i.e., —OP(O) (OH)2) or a salt thereof, a sulfate group (i.e.
    Type: Grant
    Filed: February 3, 2004
    Date of Patent: May 13, 2008
    Assignee: Kabushiki Kaisha Yakult Honsha
    Inventors: Ryuta Yamazaki, Yukiko Nishiyama, Tomio Furuta, Takeshi Matsuzaki, Hiroshi Hatano, Oh Yoshida, Masato Nagaoka, Ritsuo Aiyama, Shusuke Hashimoto, Yoshikazu Sugimoto