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).
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Patent number: 12102641Abstract: 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: GrantFiled: February 5, 2021Date of Patent: October 1, 2024Assignee: MITSUBISHI TANABE PHARMA CORPORATIONInventors: Kiyomi Ohba, Yasuki Niwa, Tetsuji Matsudaira, Maiko Hamada, Ryuta Yamazaki, Tatsuya Ibuki
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Patent number: 11890288Abstract: 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: GrantFiled: July 20, 2023Date of Patent: February 6, 2024Assignee: MITSUBISHI TANABE PHARMA CORPORATIONInventors: Kiyomi Ohba, Yasuki Niwa, Tetsuji Matsudaira, Maiko Hamada, Ryuta Yamazaki, Tatsuya Ibuki
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Publication number: 20230364105Abstract: 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: ApplicationFiled: July 20, 2023Publication date: November 16, 2023Applicant: MITSUBISHI TANABE PHARMA CORPORATIONInventors: Kiyomi OHBA, Yasuki NIWA, Tetsuji MATSUDAIRA, Maiko HAMADA, Ryuta YAMAZAKI, Tatsuya IBUKI
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Publication number: 20230146717Abstract: 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: ApplicationFiled: February 5, 2021Publication date: May 11, 2023Applicant: MITSUBISHI TANABE PHARMA CORPORATIONInventors: Kiyomi OHBA, Yasuki NIWA, Tetsuji MATSUDAIRA, Maiko HAMADA, Ryuta YAMAZAKI, Tatsuya IBUKI
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Patent number: 11542273Abstract: 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: GrantFiled: July 4, 2019Date of Patent: January 3, 2023Assignee: MITSUBISHI TANABE PHARMA CORPORATIONInventors: Ryuta Yamazaki, Tatsuya Ibuki, Yuichi Sawaguchi, Kiyomi Ohba, Maiko Hamada, Yasuki Niwa, Yuko Ishida, Hideto Maruyama, Shiki Matsuki, Minoru Tanaka
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Publication number: 20210284654Abstract: 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: ApplicationFiled: July 4, 2019Publication date: September 16, 2021Applicants: MITSUBISHI TANABE PHARMA CORPORATION, KABUSHIKI KAISHA YAKULT HONSHAInventors: Ryuta YAMAZAKI, Tatsuya IBUKI, Yuichi SAWAGUCHI, Kiyomi OHBA, Maiko HAMADA, Yasuki NIWA, Yuko ISHIDA, Hideto MARUYAMA, Shiki MATSUKI, Minoru TANAKA
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Patent number: 10724980Abstract: 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: GrantFiled: July 20, 2016Date of Patent: July 28, 2020Assignee: DENSO CORPORATIONInventors: Ryuta Yamazaki, Syo Okabe, Tatsumi Kumada, Kazuaki Takemoto, Kyoichiro Yamamoto
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Publication number: 20180209929Abstract: 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: ApplicationFiled: July 20, 2016Publication date: July 26, 2018Inventors: Ryuta YAMAZAKI, Syo OKABE, Tatsumi KUMADA, Kazuaki TAKEMOTO, Kyoichiro YAMAMOTO
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Patent number: 9693581Abstract: 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: GrantFiled: December 13, 2012Date of Patent: July 4, 2017Assignee: NARA MACHINERY CO., LTD.Inventors: Katsuhiko Sasako, Hidetoshi Iwamatsu, Ryuta Yamazaki, Kwan-Hei Park
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Patent number: 9174979Abstract: 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 aType: GrantFiled: October 23, 2009Date of Patent: November 3, 2015Assignee: KABUSHIKI KAISHA YAKULT HONSHAInventors: Takashi Ikeda, Seigo Sawada, Takashi Yaegashi, Takeshi Matsuzaki, Shusuke Hashimoto, Ryuta Yamazaki
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Publication number: 20140343017Abstract: 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: ApplicationFiled: January 24, 2013Publication date: November 20, 2014Applicant: Kabushiki Kaisha Yakult HonshaInventors: Takashi Ikeda, Masahiro Ono, Satoshi Ueno, Ryuta Yamazaki, Takashi Yaegashi, Takeshi Matsuzaki
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Publication number: 20140306036Abstract: 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: ApplicationFiled: December 13, 2012Publication date: October 16, 2014Inventors: Katsuhiko Sasako, Hidetoshi Iwamatsu, Ryuta Yamazaki, Kwan-Hei Park
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Patent number: 8697742Abstract: A breast cancer resistance protein (BCRP/ABCG2) inhibitor. The BCRP inhibitor contains, as an active ingredient, an acrylonitrile derivative or a salt thereof.Type: GrantFiled: March 29, 2006Date of Patent: April 15, 2014Assignee: Kabushiki Kaisha Yakult HonshaInventors: Ryuta Yamazaki, Yukiko Nishiyama, Tomio Furuta, Takeshi Matsuzaki, Hiroshi Hatano, Oh Yoshida, Masato Nagaoka, Ritsuo Aiyama, Shusuke Hashimoto, Yoshikazu Sugimoto
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Patent number: 8569327Abstract: 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: GrantFiled: October 23, 2009Date of Patent: October 29, 2013Assignee: Kabushiki Kaisha Yakult HonshaInventors: Takashi Ikeda, Seigo Sawada, Takashi Yaegashi, Takeshi Matsuzaki, Shusuke Hashimoto, Ryuta Yamazaki
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Publication number: 20110201638Abstract: 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 R7Type: ApplicationFiled: October 23, 2009Publication date: August 18, 2011Applicant: KABUSHIKI KAISHA YAKULT HONSHAInventors: Takashi Ikeda, Seigo Sawada, Takashi Yaegashi, Takeshi Matsuzaki, Shusuke Hashimoto, Ryuta Yamazaki
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Publication number: 20110201637Abstract: 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: ApplicationFiled: October 23, 2009Publication date: August 18, 2011Applicant: KABUSHIKI KAISHA YAKULT HONSHAInventors: Takashi Ikeda, Seigo Sawada, Takashi Yaegashi, Takeshi Matsuzaki, Shusuke Hashimoto, Ryuta Yamazaki
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Publication number: 20100249089Abstract: 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: ApplicationFiled: December 2, 2008Publication date: September 30, 2010Applicant: KABUSHIKI KAISHA YAKULT HONSHAInventors: Ryuta Yamazaki, Hiroshi Hatano, Takashi Yaegashi, Yoshiaki Igarashi, Oh Yoshida, Yoshikazu Sugimoto
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Publication number: 20090253656Abstract: 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: ApplicationFiled: March 29, 2006Publication date: October 8, 2009Applicant: Kabushiki Kaisha Yakult HonshaInventors: Ryuta Yamazaki, Yukiko Nishiyama, Tomio Furuta, Takeshi Matsuzaki, Hiroshi Hatano, Oh Yoshida, Masato Nagaoka, Ritsuo Aiyama, Shusuke Hashimoto, Yoshikazu Sugimoto
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Publication number: 20080287374Abstract: 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: ApplicationFiled: July 29, 2008Publication date: November 20, 2008Applicant: KABUSHIKI KAISHA YAKULT HONSHAInventors: Ryuta YAMAZAKI, Yukiko Nishiyama, Tomio Furuta, Takeshi Matsuzaki, Hiroshi Hatano, Sachiko Matsumoto, Ritsuo Aiyama, Oh Yoshida, Masato Nagaoka, Shusuke Hashimoto, Yoshikazu Sugimoto
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Patent number: 7371773Abstract: 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: GrantFiled: February 3, 2004Date of Patent: May 13, 2008Assignee: Kabushiki Kaisha Yakult HonshaInventors: Ryuta Yamazaki, Yukiko Nishiyama, Tomio Furuta, Takeshi Matsuzaki, Hiroshi Hatano, Oh Yoshida, Masato Nagaoka, Ritsuo Aiyama, Shusuke Hashimoto, Yoshikazu Sugimoto