Patents by Inventor Yoshiyuki Okumura

Yoshiyuki Okumura 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: 11970751
    Abstract: The grain-oriented electrical steel sheet according to the present embodiment is a grain-oriented electrical steel sheet having a base steel sheet (1), an intermediate layer (4) disposed to be in contact with the base steel sheet (1), and an insulation coating (3) disposed to be in contact with the intermediate layer (4). The grain-oriented electrical steel sheet according to the present embodiment includes a surface of the base steel sheet (1) having a strain region (D) which extends in a direction intersecting a rolling direction of the base steel sheet (1), and a crystalline phosphorus oxide M2P4O13 present in the insulation coating (3) on the strain region (D) in a cross-sectional view of a surface parallel to the rolling direction and a sheet thickness direction of the base steel sheet (1). (M means at least one or both of Fe and Cr.
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: April 30, 2024
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Yoshiyuki Ushigami, Shinji Yamamoto, Hideyuki Hamamura, Takashi Kataoka, Shunsuke Okumura
  • Patent number: 11964963
    Abstract: This invention relates to novel salts and crystal forms of 2-[3-({1-[2-(dimethylamino)ethyl]-2-(2,2-dimethylpropyl)-1H-1,3-benzodiazol-5-yl}sulfonyl)azetidin-1-yl]ethan-1-ol, simply abbreviated as Compound A, which is a selective CB2 receptor agonist. The present invention provides a salt of Compound A, a crystal form thereof, a method for preparing the said salt and a pharmaceutical composition thereof and its use. The salts of Compound A of the present invention show good pharmaceutical formulation properties such as high aqueous solubility, good crystallinity, high melting point, good chemical and physical stability, or non-deliquescent.
    Type: Grant
    Filed: November 11, 2021
    Date of Patent: April 23, 2024
    Assignee: AskAt Inc.
    Inventors: Yukari Inami, Yoshiyuki Okumura, Tracy Walker
  • Publication number: 20230322737
    Abstract: This invention relates to novel salts and crystal forms of 2-[3-({1-[2-(dimethylamino)ethyl]-2-(2,2-dimethylpropyl)-1H-1,3-benzodiazol-5-yl}sulfonyl)azetidin-1-yl]ethan-1-ol, simply abbreviated as Compound A, which is a selective CB2 receptor agonist. The present invention provides a salt of Compound A, a crystal form thereof, a method for preparing the said salt and a pharmaceutical composition thereof and its use. The salts of Compound A of the present invention show good pharmaceutical formulation properties such as high aqueous solubility, good crystallinity, high melting point, good chemical and physical stability, or non-deliquescent.
    Type: Application
    Filed: November 11, 2021
    Publication date: October 12, 2023
    Applicant: AskAt Inc.
    Inventors: Yukari INAMI, Yoshiyuki OKUMURA, Tracy WALKER
  • Patent number: 11555023
    Abstract: This invention relates to a method for preparing a desired isomer of a substituted 2-trifluoromethyl-2H-chromene-3-carboxylic acid, which is characterized by comprising: (a) contacting the substituted 2-trifluoromethyl-2H-chromene-3-carboxylic acid with a chiral amine to form salts, wherein the chiral amine is selected so that the solubility of the amine salt of the undesired substituted 2-trifluoromethyl-2H-chromene-3-carboxylic acid is greater than the amine salt of the desired substituted 2-trifluoromethyl-2H-chromene-3-carboxylic acid, and (b) irradiating the mixture with an ultraviolet (UV) light, wherein the irradiation increases the amount of the less soluble chiral amine salt of the substituted of the 2-trifluoromethyl-2H-chromene-3-carboxylic acid in the mixture.
    Type: Grant
    Filed: January 20, 2020
    Date of Patent: January 17, 2023
    Assignee: AskAt Inc.
    Inventors: Yoshiyuki Okumura, Yukari Inami, Bas Dros, Michel Sebastiaan Leeman
  • Publication number: 20220144792
    Abstract: This invention relates to a method for preparing a desired isomer of a substituted 2-trifluoromethyl-2H-chromene-3-carboxylic acid, which is characterized by comprising: (a) contacting the substituted 2-trifluoromethyl-2H-chromene-3-carboxylic acid with a chiral amine to form salts, wherein the chiral amine is selected so that the solubility of the amine salt of the undesired substituted 2-trifluoromethyl-2H-chromene-3-carboxylic acid is greater than the amine salt of the desired substituted 2-trifluoromethyl-2H-chromene-3-carboxylic acid, and (b) irradiating the mixture with an ultraviolet (UV) light, wherein the irradiation increases the amount of the less soluble chiral amine salt of the substituted of the 2-trifluoromethyl-2H-chromene-3-carboxylic acid in the mixture.
    Type: Application
    Filed: January 20, 2020
    Publication date: May 12, 2022
    Applicant: AskAt Inc.
    Inventors: Yoshiyuki OKUMURA, Yukari INAMI, Bas DROS, Michel Sebastiaan LEEMAN
  • Publication number: 20210300921
    Abstract: The present invention provides N-((4-(2-ethyl-4,6-dimethyl-1H-imidazo[4,5-c]pyridin-1-yl)phenethyl)carbamoyl)-4-methylbenzenesulfonamide compositions, and the use thereof for treating a proliferative disorder.
    Type: Application
    Filed: July 11, 2019
    Publication date: September 30, 2021
    Inventors: Mark MANFREDI, Jeffrey ECSEDY, Alfredo C. CASTRO, Yoshiyuki OKUMURA
  • Patent number: 9447066
    Abstract: This invention relates to salts and crystal forms of (S)-6-chloro-7-(1,1-dimethylethyl)-2-trifluoromethyl-2H-1-benzopyran-3-carboxylic acid, Compound A, which is cyclooxygenase-2 inhibitor. The present invention provides a salt of compound A, a crystal form thereof, a process for preparing the said salt and a pharmaceutical composition thereof and its use. The salts and/or co-crystals of Compound A of the present invention show good formulation properties such as high aqueous solubility, good intrinsic dissolution, good crystallinity, good thermal stability or low hygroscopicity.
    Type: Grant
    Filed: January 6, 2014
    Date of Patent: September 20, 2016
    Assignee: AskAt Inc.
    Inventors: Yoshiyuki Okumura, Yasuhiro Iwata, Toyoharu Numata, Masaki Sudo, Takako Okumura
  • Patent number: 9447065
    Abstract: The present invention provides a pharmaceutical composition which prevents from decreasing the blood exposure of the third generation coxib-drugs, a process for preparing the said pharmaceutical composition and its use. It has been founded in this invention that adding a basic amine or a basic amino acid, or a cyclodextrin to the third generation coxib-drug can afford a pharmaceutical composition which can prevent from decreasing the blood exposure, AUC and bioavailability. The pharmaceutical composition of the present invention has also good stability, which is useful for drugs. Namely, the technological thought that adding a basic amine or a basic amino acid, or a cyclodextrin to the third generation coxib-drug can prevent from decreasing the blood exposure, AUC and bioavailability has been established in this invention.
    Type: Grant
    Filed: October 18, 2012
    Date of Patent: September 20, 2016
    Assignee: RaQualia Pharma Inc.
    Inventors: Yasuhiro Iwata, Kaoru Shimada, Yoshiyuki Okumura, Mayumi Kashino, Hiromitsu Yoshida
  • Publication number: 20150353520
    Abstract: This invention relates to salts and crystal forms of (S)-6-chloro-7-(1,1-dimethylethyl)-2-trifluoromethyl-2H-1-benzopyran-3-carboxylic acid, Compound A, which is cyclooxygenase-2 inhibitor. The present invention provides a salt of compound A, a crystal form thereof, a process for preparing the said salt and a pharmaceutical composition thereof and its use. The salts and/or co-crystals of Compound A of the present invention show good formulation properties such as high aqueous solubility, good intrinsic dissolution, good crystallinity, good thermal stability or low hygroscopicity.
    Type: Application
    Filed: January 6, 2014
    Publication date: December 10, 2015
    Applicant: AskAt Inc.
    Inventors: Yoshiyuki OKUMURA, Yasuhiro IWATA, Toyoharu NUMATA, Masaki SUDO, Takako OKUMURA
  • Publication number: 20140256804
    Abstract: The present invention provides a pharmaceutical composition which prevents from decreasing the blood exposure of the third generation coxib-drugs, a process for preparing the said pharmaceutical composition and its use. It has been founded in this invention that adding a basic amine or a basic amino acid, or a cyclodextrin to the third generation coxib-drug can afford a pharmaceutical composition which can prevent from decreasing the blood exposure, AUC and bioavailability. The pharmaceutical composition of the present invention has also good stability, which is useful for drugs. Namely, the technological thought that adding a basic amine or a basic amino acid, or a cyclodextrin to the third generation coxib-drug can prevent from decreasing the blood exposure, AUC and bioavailability has been established in this invention.
    Type: Application
    Filed: October 18, 2012
    Publication date: September 11, 2014
    Applicant: RAQUALIA PHARMA INC.
    Inventors: Yasuhiro Iwata, Kaoru Shimada, Yoshiyuki Okumura, Mayumi Kashino, Hiromitsu Yoshida
  • Patent number: 8084476
    Abstract: This invention provides a compound of the formula (I): wherein X represents a carbon atom or the like: Y represents imino, or the like: R1 represents an alkyl group having from 1 to 6 carbon atoms or the like: R2 and R3 independently represents a hydrogen atom or the like. These compounds are useful for the treatment of disease conditions mediated by prostaglandin such as pain, or the like in mammalian. This invention also provides a pharmaceutical composition comprising the above compound.
    Type: Grant
    Filed: February 10, 2009
    Date of Patent: December 27, 2011
    Assignee: Raqualia Pharma Inc.
    Inventors: Hiroki Koike, Kana Kon-i, Yukari Matsumoto, Kazunari Nakao, Yoshiyuki Okumura, Tatsuya Yamagishi
  • Publication number: 20090163558
    Abstract: This invention provides a compound of the formula (I): wherein X represents a carbon atom or the like: Y represents imino, or the like: R1 represents an alkyl group having from 1 to 6 carbon atoms or the like: R2 and R3 independently represents a hydrogen atom or the like. These compounds are useful for the treatment of disease conditions mediated by prostaglandin such as pain, or the like in mammalian. This invention also provides a pharmaceutical composition comprising the above compound.
    Type: Application
    Filed: February 10, 2009
    Publication date: June 25, 2009
    Applicant: RaQualia Pharma Inc.
    Inventors: Hiroki Koike, Kana Kon-i, Yukari Matsumoto, Kazunari Nakao, Yoshiyuki Okumura, Tatsuya Yamagishi
  • Patent number: 7534914
    Abstract: This invention provides a compound of the formula (I): wherein X represents a carbon atom or the like: Y represents imino, or the like: R1 represents an alkyl group having from 1 to 6 carbon atoms or the like: R2 and R3 independently represents a hydrogen atom or the like. These compounds are useful for the treatment of disease conditions mediated by prostaglandin such as pain, or the like in mammalian. This invention also provides a pharmaceutical composition comprising the above compound.
    Type: Grant
    Filed: April 29, 2005
    Date of Patent: May 19, 2009
    Assignee: ReQualia Pharma Inc.
    Inventors: Hiroki Koike, Kana Kon-i, Yukari Matsumoto, Kazunari Nakao, Yoshiyuki Okumura, Tatsuya Yamagishi
  • Patent number: 7479564
    Abstract: This invention provides a compound of the formula (I): or the pharmaceutically acceptable salts thereof, wherein Y1, Y2, Y3 and Y4 are independently selected from N, CH, etc.; R1 is H, C1-8 alkyl, etc.; Q1 is a 5-12 membered monocyclic or bicyclic aromatic ring optionally containing up to 4 heteroatoms selected from O, N and S, etc.; A is a 5-6 membered monocyclic aromatic ring optionally containing up to 3 heteroatoms selected from O, N and S, etc.; B is C1-6 alkylene optionally substituted with an oxo group, etc.; W is NH, O, etc.; R2 is H, C1-4 alkyl, etc.; Z is a 5-12 membered monocyclic or bicyclic aromatic ring optionally containing up to 3 heteroatoms selected from O, N and S, etc.; L is halo, C1-4 alkyl, etc.; m is 0, 1 or 2; R3 and R4 are independently selected from H and C1-4 alkyl ; R5 is H, C1-4 alkyl, etc.; Q2 is a 5-12 membered monocyclic or bicyclic aromatic ring or tricyclic ring optionally containing up to 3 heteroatoms selected from O, N and S, etc.
    Type: Grant
    Filed: November 3, 2006
    Date of Patent: January 20, 2009
    Assignee: RaQualia Pharma Inc.
    Inventors: Kazunari Nakao, Yoshiyuki Okumura, Miyako Matsumizu, Naomi Ueno, Yoshinobu Hashizume, Tomoki Kato, Akiyoshi Kawai, Yoriko Miyake, Seiji Nukui, Katsuhiro Shinjyo, Kana Taniguchi
  • Publication number: 20070155732
    Abstract: This invention provides a compound of the formula (I): or the pharmaceutically acceptable salts thereof, wherein Y1, Y2, Y3 and Y4 are independently selected from N, CH, etc.; R1 is H, C1-8 alkyl, etc.; Q1 is a 5-12 membered monocyclic or bicyclic aromatic ring optionally containing up to 4 heteroatoms selected from O, N and S, etc.; A is a 5-6 membered monocyclic aromatic ring optionally containing up to 3 heteroatoms selected from O, N and S, etc.; B is C1-6 alkylene optionally substituted with an oxo group, etc.; W is NH, O, etc.; R2 is H, C1-4 alkyl, etc.; Z is a 5-12 membered monocyclic or bicyclic aromatic ring optionally containing up to 3 heteroatoms selected from O, N and S, etc.; L is halo, C1-4 alkyl, etc.; m is 0, 1 or 2; R3 and R4 are independently selected from H and C1-4 alkyl ; R5 is H, C1-4 alkyl, etc.; Q2 is a 5-12 membered monocyclic or bicyclic aromatic ring or tricyclic ring optionally containing up to 3 heteroatoms selected from O, N and S, etc.
    Type: Application
    Filed: November 3, 2006
    Publication date: July 5, 2007
    Inventors: Kazunari Nakao, Yoshiyuki Okumura, Miyako Matsumizu, Naomi Ueno, Yoshinobu Hashizume, Tomoki Kato, Akiyoshi Kawai, Yoriko Miyake, Seiji Nukui, Katsuhiro Shinjyo, Kana Taniguchi
  • Patent number: 7238714
    Abstract: This invention provides a compound of the formula (I): wherein A represents a phenyl group or the like: B represents an aryl or the like: E represents a 1,4-phenylene group; R1 and R2 independently represent a hydrogen atom or the like: R3 and R4 independently represent a hydrogen atom or the like: R5 represents —CO2H or the like: R6 represents an alkyl group having from 1 to 6 carbon atoms or the like: X represents a methylene group or the like. These compounds are useful for the treatment of disease conditions mediated by prostaglandin such as pain, or the like in mammalian. This invention also provides a pharmaceutical composition comprising the above compound.
    Type: Grant
    Filed: September 2, 2004
    Date of Patent: July 3, 2007
    Assignee: Pfizer Japan, Inc.
    Inventors: Kazunari Nakao, Seiji Nukui, Yoshiyuki Okumura, Tatsuya Yamagishi
  • Patent number: 7141580
    Abstract: This invention provides a compound of the formula (I): or the pharmaceutically acceptable salts thereof, wherein Y1, Y2, Y3 and Y4 are independently selected from N, CH, etc.; R1 is H, C1-8 alkyl, etc.; Q1 is a 5–12 membered monocyclic or bicyclic aromatic ring optionally containing up to 4 heteroatoms selected from O, N and S, etc.; A is a 5–6 membered monocyclic aromatic ring optionally containing up to 3 heteroatoms selected from O, N and S, etc.; B is C1-6 alkylene optionally substituted with an oxo group, etc.; W is NH, O, etc.; R2 is H, C1-4 alkyl, etc.; Z is a 5–12 membered monocyclic or bicyclic aromatic ring optionally containing up to 3 heteroatoms selected from O, N and S, etc.; L is halo, C1-4 alkyl, etc.; m is 0, 1 or 2; R3 and R4 are independently selected from H and C1-4 alkyl; R5 is H, C1-4 alkyl, etc.; Q2 is a 5–12 membered monocyclic or bicyclic aromatic ring or tricyclic ring optionally containing up to 3 heteroatoms selected from O, N and S, etc.
    Type: Grant
    Filed: February 4, 2004
    Date of Patent: November 28, 2006
    Assignee: Pfizer Inc.
    Inventors: Kazunari Nakao, Yoshiyuki Okumura, Miyako Matsumizu, Naomi Ueno, Yoshinobu Hashizume, Tomoki Kato, Akiyoshi Kawai, Yoriko Miyake, Seiji Nukui, Katsuhiro Shinjyo, Kana Taniguchi
  • Publication number: 20050267170
    Abstract: This invention provides a compound of the formula (I): wherein X represents a carbon atom or the like: Y represents imino, or the like: R1 represents an alkyl group having from 1 to 6 carbon atoms or the like: R2 and R3 independently represents a hydrogen atom or the like. These compounds are useful for the treatment of disease conditions mediated by prostaglandin such as pain, or the like in mammalian. This invention also provides a pharmaceutical composition comprising the above compound.
    Type: Application
    Filed: April 29, 2005
    Publication date: December 1, 2005
    Inventors: Hiroki Koike, Kana Kon-i, Yukari Matsumoto, Kazunari Nakao, Yoshiyuki Okumura, Tatsuya Yamagishi
  • Publication number: 20050250818
    Abstract: This invention provides a compound of the formula (I): wherein X represents a carbon atom or the like: Y represents imino, or the like: Z represents a hydrogen atom or the like: R1 represents an alkyl group having from 1 to 6 carbon atoms or the like: R2 and R3 independently represents a hydrogen atom or the like. These compounds are useful for the treatment of disease conditions mediated by prostaglandin such as pain, or the like in mammalian. This invention also provides a pharmaceutical composition comprising the above compound.
    Type: Application
    Filed: April 29, 2005
    Publication date: November 10, 2005
    Inventors: Hiroki Koike, Yukari Matsumoto, Kazunari Nakao, Yoshiyuki Okumura, Tatsuya Yamagishi
  • Publication number: 20050065188
    Abstract: This invention provides a compound of the formula (I): wherein A represents a phenyl group or the like: B represents an aryl or the like: E represents a 1,4-phenylene group; R1 and R2 independently represent a hydrogen atom or the like: R3 and R4 independently represent a hydrogen atom or the like: R5 represents —CO2H or the like: R6 represents an alkyl group having from 1 to 6 carbon atoms or the like: X represents a methylene group or the like. These compounds are useful for the treatment of disease conditions mediated by prostaglandin such as pain, or the like in mammalian. This invention also provides a pharmaceutical composition comprising the above compound.
    Type: Application
    Filed: September 2, 2004
    Publication date: March 24, 2005
    Inventors: Kazunari Nakao, Seiji Nukui, Yoshiyuki Okumura, Tatsuya Yamagishi