Patents by Inventor Toru Esaki

Toru Esaki 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: 20220162208
    Abstract: The present invention provides compounds represented by formula (1) below and pharmacologically acceptable salts thereof: wherein R1, R2, R3, and R4 are as defined in the claims.
    Type: Application
    Filed: May 25, 2021
    Publication date: May 26, 2022
    Applicant: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Yoshikazu NISHIMURA, Toru ESAKI, Tatsuya TAMURA
  • Publication number: 20210024524
    Abstract: The present invention provides compounds represented by formula (1) below and pharmacologically acceptable salts thereof: wherein R1, R2, R3, and R4 are as defined in the claims.
    Type: Application
    Filed: February 28, 2020
    Publication date: January 28, 2021
    Applicant: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Yoshikazu Nishimura, Toru Esaki, Tatsuya Tamura
  • Publication number: 20180237436
    Abstract: The present invention provides compounds represented by formula (1) below and pharmacologically acceptable salts thereof: wherein R1, R2, R3, and R4 are as defined in the claims.
    Type: Application
    Filed: December 20, 2017
    Publication date: August 23, 2018
    Applicant: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Yoshikazu Nishimura, Toru Esaki, Tatsuya Tamura
  • Publication number: 20160326175
    Abstract: The present invention provides compounds represented by formula (1) below and pharmacologically acceptable salts thereof:
    Type: Application
    Filed: July 20, 2016
    Publication date: November 10, 2016
    Applicant: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Yoshikazu Nishimura, Toru Esaki, Tatsuya Tamura
  • Patent number: 9487517
    Abstract: The present invention relates to a compound represented by the following formula (1): wherein W, X, Y, R1, R2, R33, R34, m and n are as defined in the claims, or a pharmacologically acceptable salt thereof.
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: November 8, 2016
    Assignee: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Toru Esaki, Yoshikazu Nishimura, Yoshiaki Isshiki, Naoki Okamoto, Yoshiyuki Furuta, Akemi Mizutani, Masateru Ohta, Wayne Wen Lai, Tomoya Kotake
  • Patent number: 9428505
    Abstract: The present invention provides compounds represented by formula (1) below and pharmacologically acceptable salts thereof: wherein R1, R2, R3, and R4 are as defined in the claims.
    Type: Grant
    Filed: December 10, 2013
    Date of Patent: August 30, 2016
    Assignee: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Yoshikazu Nishimura, Toru Esaki, Tatsuya Tamura
  • Publication number: 20160016956
    Abstract: The present invention relates to a compound represented by the following formula (1): wherein W, X, Y, R1, R2, R33, R34, m and n are as defined in the claims, or a pharmacologically acceptable salt thereof.
    Type: Application
    Filed: September 17, 2015
    Publication date: January 21, 2016
    Applicant: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Toru Esaki, Yoshikazu NISHIMURA, Yoshiaki ISSHIKI, Naoki OKAMOTO, Yoshiyuki FURUTA, Akemi MIZUTANI, Masateru OHTA, Wayne Wen LAI, Tomoya KOTAKE
  • Patent number: 9169254
    Abstract: The present invention relates to a compound represented by the following formula (1): wherein W, X, Y, R1, R2, R33, R34, m and n are as defined in the claims, or a pharmacologically acceptable salt thereof.
    Type: Grant
    Filed: April 27, 2010
    Date of Patent: October 27, 2015
    Assignee: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Toru Esaki, Yoshikazu Nishimura, Yoshiaki Isshiki, Naoki Okamoto, Yoshiyuki Furuta, Akemi Mizutani, Masateru Ohta, Wayne Wen Lai, Tomoya Kotake
  • Publication number: 20150274727
    Abstract: The present invention provides compounds represented by formula (1) below and pharmacologically acceptable salts thereof: wherein R1, R2, R3, and R4 are as defined in the claims.
    Type: Application
    Filed: December 10, 2013
    Publication date: October 1, 2015
    Applicant: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Yoshikazu Nishimura, Toru Esaki, Tatsuya Tamura
  • Publication number: 20120270838
    Abstract: The present invention relates to a compound represented by the following formula (1): wherein W, X, Y, R1, R2, R33, R34, m and n are as defined in the claims, or a pharmacologically acceptable salt thereof.
    Type: Application
    Filed: April 27, 2010
    Publication date: October 25, 2012
    Applicant: CHUGAI SEIYAKU KABUSHIKI KAISHA
    Inventors: Toru Esaki, Yoshikazu Nishimura, Yoshiaki Isshiki, Naoki Okamoto, Yoshiyuki Furuta, Akemi Mizutani, Masateru Ohta, Wayne Wen Lai, Tomoya Kotake
  • Patent number: 6887890
    Abstract: The compounds of the invention are compounds represented by the following general formula (1): wherein E represents one selected from the group consisting of a methylidyne group and a nitrilo group, R1 represents one selected from the group consisting of optionally substituted aryl groups and optionally substituted heteroaryl groups, R2 represents one selected from the group consisting of a hydrogen atom and alkyl groups, W1 represents an amino acid residue, A represents one selected from the group consisting of a carbonyl group and a sulfonyl group, X1 represents one selected from the group consisting of optionally substituted alkylene groups and optionally substituted alkenylene groups, and p represents 0 or 1; and their pharmacologically acceptable salts, which exhibit thrombopoietin-like activity.
    Type: Grant
    Filed: May 30, 2001
    Date of Patent: May 3, 2005
    Assignee: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Shinya Fujiwara, Tomokazu Ozaki, Toshiro Kozono, Kunihiro Hattori, Toru Esaki
  • Patent number: 6716628
    Abstract: A chondrogenesis promoter comprising as an active ingredient a compound represented by general formula (I) or a salt thereof: wherein R1 represents a halogen atom, a lower alkyl group, a lower alkoxy group, etc.; R2 represents a hydrogen atom, a lower alkyl group, a lower alkenyl group, a lower alkynyl group, a lower alkoxy group, an acyl group, an aryl group, a heterocyclic group, etc.; R3 represents a lower alkyl group, a cycloalkyl group, an aryl group, a heterocyclic group, etc.; R4 represents a hydrogen atom, a lower alkyl group, an aryl group, a heterocyclic group, etc.; X and Y represent —CH2—, —NH— or —O—; and n represents an integer of 0-4.
    Type: Grant
    Filed: August 21, 2002
    Date of Patent: April 6, 2004
    Assignee: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Hidetomo Kitamura, Atsuhiko Kato, Toru Esaki
  • Publication number: 20030162724
    Abstract: The compounds of the invention are compounds represented by the following general formula (1): 1
    Type: Application
    Filed: November 27, 2002
    Publication date: August 28, 2003
    Inventors: Shinya Fujiwara, Tomokazu Ozaki, Toshiro Kozono, Kunihiro Hattori, Toru Esaki
  • Publication number: 20030119896
    Abstract: A chondrogenesis promoter comprising as an active ingredient a compound represented by general formula (I) or a salt thereof: 1
    Type: Application
    Filed: August 21, 2002
    Publication date: June 26, 2003
    Applicant: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Hidetomo Kitamura, Atsuhiko Kato, Toru Esaki
  • Patent number: 6500854
    Abstract: A chondrogenesis promoter comprising as an active ingredient a compound represented by general formula (I) or a salt thereof: wherein R1 represents a halogen atom, a lower alkyl group, a lower alkoxy group, etc.; R2 represents a hydrogen atom, a lower alkyl group, a lower alkenyl group, a lower alkynyl group, a lower alkoxy group, an acyl group, an aryl group, a heterocyclic group, etc.; R1 represents a lower alkyl group, a cycloalkyl group, an aryl group, a heterocyclic group, etc.; R4 represents a hydrogen atom, a lower alkyl group, an aryl group, a heterocyclic group, etc.; X and Y represent —CH2—, —NH—or —O—; and n represents an integer of 0-4.
    Type: Grant
    Filed: September 21, 2001
    Date of Patent: December 31, 2002
    Assignee: Chugai Sei Yaku Kabushiki Kaisha
    Inventors: Hidetomo Kitamura, Atsuhiko Kato, Toru Esaki
  • Patent number: 6331553
    Abstract: Compounds represented by the general formula (1): (where R1 and R2 are typically a hydrogen atom; R3 and R4 are typically a hydrogen atom or a lower alkyl group; R5 is typically a hydrogen atom; X1, X2, X3 and X4 are typically a hydrogen atom or a lower alkoxy group; A is typically an optionally substituted pyridine ring; m and n are each 0 or 1) have an NOS inhibiting activity and are useful as therapeutics of cerebrovascular diseases and other pharmaceuticals.
    Type: Grant
    Filed: June 24, 1999
    Date of Patent: December 18, 2001
    Assignee: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Toru Esaki, Toshihiko Makino, Yoshikazu Nishimura, Toshiaki Nagafuji
  • Patent number: 6207836
    Abstract: A compound represented by formula (I): wherein R1 represents a halogen atom, a lower alkyl group, a lower alkoxy group, a hydroxyl group, a nitro group, a trifluoromethyl group, a lower alkylthio group, an acyl group, a carboxyl group, a mercapto group or an amino group; R2 represents a hydrogen atom, a lower alkyl group, a lower alkenyl group, a lower alkynyl group, an alkoxy group, an acyl group, an aryl group or a heterocyclic group; R3 represents a lower alkyl group, a cycloalkyl group, an aryl group, or a heterocyclic group; R4 represents a hydrogen atom, a lower alkyl group, an aryl group, a heterocyclic group, —OR5, —SR5 or —NR6R7 (wherein R5, R6, and R7 each represent a lower alkyl group, etc.); X and Y each represent —CH2—, —NH— or —O—; and n represents an integer of from 0 to 4, and an intermediate for synthesis thereof are disclosed.
    Type: Grant
    Filed: October 30, 1998
    Date of Patent: March 27, 2001
    Assignee: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Toru Esaki, Takashi Emura, Eiichi Hoshino
  • Patent number: 6127544
    Abstract: A compound represented by formula (I): wherein R.sub.1 represents a halogen atom, a lower alkyl group, a lower alkoxy group, a hydroxyl group, a nitro group, a trifluoromethyl group, a lower alkylthio group, an acyl group, a carboxyl group, a mercapto group or an amino group; R.sub.2 represents a hydrogen atom, a lower alkyl group, a lower alkenyl group, a lower alkynyl group, an alkoxy group, an acyl group, an aryl group or a heterocyclic group; R.sub.3 represents a lower alkyl group, a cycloalkyl group, an aryl group, or a heterocyclic group; R.sub.4 represents a hydrogen atom, a lower alkyl group, an aryl group, a heterocyclic group, --OR.sub.5, --SR.sub.5 or --NR.sub.6 R.sub.7 (wherein R.sub.5, R.sub.6, and R.sub.7 each represent a lower alkyl group, etc.); X and Y each represent --CH.sub.2 --, --NH-- or --O--; and n represents an integer of from 0 to 4, and an intermediate for synthesis thereof are disclosed.
    Type: Grant
    Filed: October 30, 1998
    Date of Patent: October 3, 2000
    Assignee: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Toru Esaki, Takashi Emura, Eiichi Hoshino
  • Patent number: 6114536
    Abstract: A compound represented by formula (I): ##STR1## wherein R.sub.1 represents a halogen atom, a lower alkyl group, a lower alkoxy group, a hydroxyl group, a nitro group, a trifluoromethyl group, a lower alkylthio group, an acyl group, a carboxyl group, a mercapto group or an amino group; R.sub.2 represents a hydrogen atom, a lower alkyl group, a lower alkenyl group, a lower alkynyl group, an alkoxy group, an acyl group, an aryl group or a heterocyclic group; R.sub.3 represents a lower alkyl group, a cycloalkyl group, an aryl group, or a heterocyclic group; R.sub.4 represents a hydrogen atom, a lower alkyl group, an aryl group, a heterocyclic group, --OR.sub.5, --SR.sub.5 or --NR.sub.6 R.sub.7 (wherein R.sub.5, R.sub.6, and R.sub.7 each represent a lower alkyl group, etc.); X and Y each represent --CH.sub.2 --, --NH-- or --O--; and n represents an integer of from 0 to 4, and an intermediate for synthesis thereof are disclosed.
    Type: Grant
    Filed: October 30, 1998
    Date of Patent: September 5, 2000
    Assignee: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Toru Esaki, Takashi Emura, Eiichi Hoshino
  • Patent number: 6031111
    Abstract: A compound represented by formula (I): ##STR1## wherein R.sub.1 represents a halogen atom, a lower alkyl group, a lower alkoxy group, a hydroxyl group, a nitro group, a trifluoromethyl group, a lower alkylthio group, an acyl group, a carboxyl group, a mercapto group or an amino group; R.sub.2 represents a hydrogen atom, a lower alkyl group, a lower alkenyl group, a lower alkynyl group, an alkoxy group, an acyl group, an aryl group or a heterocyclic group; R.sub.3 represents a lower alkyl group, a cycloalkyl group, an aryl group, or a heterocyclic group; R.sub.4 represents a hydrogen atom, a lower alkyl group, an aryl group, a heterocyclic group, --OR.sub.5, --SR.sub.5 or --NR.sub.6 R.sub.7 (wherein R.sub.5, R.sub.6, and R.sub.7 each represent a lower alkyl group, etc.); X and Y each represent --CH.sub.2 --, --NH-- or --O--; and n represents an integer of from 0 to 4, and an intermediate for synthesis thereof are disclosed.
    Type: Grant
    Filed: October 30, 1998
    Date of Patent: February 29, 2000
    Assignee: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Toru Esaki, Takashi Emura, Eiichi Hoshino