Patents by Inventor Hiroyuki Miyachi

Hiroyuki Miyachi 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: 10709688
    Abstract: This invention provides a pharmaceutical composition for treating or preventing synucleinopathy comprising a compound represented by formula (I), or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: July 14, 2020
    Assignees: Tohoku University, National University Corporation Okayama University
    Inventors: Kohji Fukunaga, Hiroyuki Miyachi, Hiroaki Ishida, Shintaro Ban
  • Publication number: 20190125726
    Abstract: This invention provides a pharmaceutical composition for treating or preventing synucleinopathy comprising a compound represented by formula (I), or a pharmaceutically acceptable salt thereof.
    Type: Application
    Filed: March 31, 2017
    Publication date: May 2, 2019
    Applicants: TOHOKU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION OKAYAMA UNIVERSITY
    Inventors: Kohji Fukunaga, Hiroyuki MIYACHI, Hiroaki ISHIDA, Shintaro BAN
  • Publication number: 20160368895
    Abstract: [Problem] The present invention addresses the problem of providing a compound that is useful for preventing or treating diseases associated with malfunctioning of PGI2 receptors, in particular, pulmonary hypertension. [Solution] A positive allosteric regulator of a PGI2 receptor which comprises a compound represented by formula (1) or a pharmaceutically acceptable salt, hydrate or solvate thereof. (1) (In the formula, R1 is a branched chain or cyclic alkyl or alkenyl having 3 to 10 carbon atoms which may be substituted, R2 is a hydrogen atom or an alkyl having 1 to 6 carbon atoms which may be substituted, R3 is 1 to 4 substituents which are the same or different independently selected from the group consisting of a hydrogen atom, a halogen atom, an alkyl having 1 to 6 carbon atoms which may be substituted, and an alkoxy having 1 to 6 carbon atoms which may be substituted, and A is an aryl which may be substituted or a heteroaryl which may be substituted.
    Type: Application
    Filed: November 27, 2014
    Publication date: December 22, 2016
    Applicants: THE UNIVERSITY OF TOKYO, NATIONAL UNIVERSITY CORPORATION OKAYAMA UNIVERSITY
    Inventors: Tetsuo NAGANO, Takayoshi OKABE, Hirotatsu KOJIMA, Toshifumi SUZUKI, Kenjiro HANAOKA, Manabu SHIMONISHI, Shinichiro EGASHIRA, Hirofumi NAKANO, Kazuo KUMAGAI, Hiroyuki MIYACHI, Kenji MATSUNO, Minoru WAKI
  • Patent number: 8611456
    Abstract: A transmission unit includes a transmission pulse signal generating circuit which generates a transmission pulse signal having pulses corresponding to a plurality of clock signals generated in a clock signal generating circuit, existing between a first pulse and a second pulse which are generated in an edge pulse generating circuit. A receiving unit is configured to decode a received pulse signal based on the transmission pulse signal received from the transmission unit via an isolated communication unit, as a signal that transitions from a first level to a second level when an initial pulse of the received pulse signal is detected and that transitions from the second level to the first level when a subsequent pulse is not detected within a predetermined first time period from when a most recent pulse of the received pulse signal is detected.
    Type: Grant
    Filed: March 24, 2011
    Date of Patent: December 17, 2013
    Assignee: Panasonic Corporation
    Inventors: Takao Hashimoto, Hiroyuki Miyachi
  • Patent number: 8410826
    Abstract: A load drive circuit with a current bidirectional detecting function includes: a current bidirectional switch connected between a first wire and a second wire and through which a first forward current flows in a direction from the first wire to the second wire and a first backward current flows in a direction from the second wire to the first wire; a forward current detecting switch connected to the first wire and into which a second forward current correlated to the first forward current flowing through the current bidirectional switch flows; a backward current detecting switch connected to the second wire and into which a second backward current correlated to the first backward current flowing through the current bidirectional switch flows.
    Type: Grant
    Filed: March 29, 2011
    Date of Patent: April 2, 2013
    Assignee: Panasonic Corporation
    Inventors: Masaaki Koto, Naoyuki Nakamura, Hiroyuki Miyachi
  • Publication number: 20110304360
    Abstract: The present invention introduces a diode circuit which achieves ideal diode characteristics which observe an enough reverse breakdown voltage, and whose forward voltage is nearly 0 V. An active diode has an anode terminal and a cathode terminal. The active diode includes a transistor which has a gate terminal, a drain terminal connected to one of the anode terminal and the cathode terminal, and a source terminal connected to the other one of the anode terminal or the cathode terminal; and a gate voltage generating circuit which delivers a gate voltage to the gate terminal, the gate voltage being adjusted to be equal to a threshold voltage of the transistor.
    Type: Application
    Filed: June 13, 2011
    Publication date: December 15, 2011
    Inventors: Naoyuki NAKAMURA, Hiroyuki Miyachi
  • Publication number: 20110248748
    Abstract: A load drive circuit with a current bidirectional detecting function includes: a current bidirectional switch connected between a first wire and a second wire and through which a first forward current flows in a direction from the first wire to the second wire and a first backward current flows in a direction from the second wire to the first wire; a forward current detecting switch connected to the first wire and into which a second forward current correlated to the first forward current flowing through the current bidirectional switch flows; a backward current detecting switch connected to the second wire and into which a second backward current correlated to the first backward current flowing through the current bidirectional switch flows.
    Type: Application
    Filed: March 29, 2011
    Publication date: October 13, 2011
    Inventors: Masaaki Koto, Naoyuki Nakamura, Hiroyuki Miyachi
  • Publication number: 20110235737
    Abstract: A transmission unit includes a transmission pulse signal generating circuit which generates a transmission pulse signal having pulses corresponding to a plurality of clock signals generated in a clock signal generating circuit, existing between a first pulse and a second pulse which are generated in an edge pulse generating circuit. A receiving unit is configured to decode a received pulse signal based on the transmission pulse signal received from the transmission unit via an isolated communication unit, as a signal that transitions from a first level to a second level when an initial pulse of the received pulse signal is detected and that transitions from the second level to the first level when a subsequent pulse is not detected within a predetermined first time period from when a most recent pulse of the received pulse signal is detected.
    Type: Application
    Filed: March 24, 2011
    Publication date: September 29, 2011
    Inventors: Takao HASHIMOTO, Hiroyuki Miyachi
  • Patent number: 7176204
    Abstract: Novel substituted carboxylic acid derivatives which bind as ligands to human peroxisome proliferator activated receptor (PPAR) to activate the receptor and thereby exhibit potent effects of decreasing neutral fat, cholesterol, and blood sugar; and a processes for preparing the derivatives.
    Type: Grant
    Filed: December 4, 2001
    Date of Patent: February 13, 2007
    Assignee: Kyorin Pahrmaceutical Co., Ltd.
    Inventors: Hiroyuki Miyachi, Kouji Murakami
  • Patent number: 7049342
    Abstract: The invention provides novel substituted phenylpropionic acid derivatives that bind to the receptor as ligands of human peroxisome proliferator-activated receptor ? (PPAR?) to activate and exhibit potent lipid-decreasing action, and processes for preparing them.
    Type: Grant
    Filed: May 25, 2001
    Date of Patent: May 23, 2006
    Assignee: Kyorin Pharmaceutical Co., Ltd.
    Inventors: Hiroyuki Miyachi, Masahiro Nomura, Yukie Takahashi, Takahiro Tanase, Kouji Murakami, Masahiro Suzuki
  • Publication number: 20050101521
    Abstract: The invention provides novel substituted carboxylic acid derivatives that bind to receptor as ligands of human peroxisome proliferator-activated receptor (PPAR) to activate it and exhibit potent triglyceride-lowering action, cholesterol-lowering action and blood glucose-lowering action, and processes for preparing them. The invention relates to substituted carboxylic acid derivatives represented by a general formula (1), their pharmaceutically acceptable salts and their hydrates, and processes for preparing them.
    Type: Application
    Filed: December 4, 2001
    Publication date: May 12, 2005
    Applicant: KYORIN PHARMACEUTICAL CO., LTD.
    Inventors: HIroyuki Miyachi, Kouji Murakami
  • Patent number: 6734199
    Abstract: The invention provides novel substituted benzylthiazolidine-2,4-dione derivatives which increase the transactivation action of receptor as a ligand of human peroxisome proliferator-activated receptor (PPAR) and exhibit the blood glucose-decreasing action and lipid-decreasing action, and a process for preparing them. The invention relates to substituted benzylthiazolidine-2,4-dione derivatives represented by the general formula (1) [wherein A denotes a phenyl group which is unsubstituted or may have substituents, phenoxy group which is unsubstituted or may have substituents or benzyloxy group which is unsubstituted or may have substituents], their medicinally acceptable salts, their hydrates and a process for preparing them.
    Type: Grant
    Filed: February 20, 2002
    Date of Patent: May 11, 2004
    Assignee: Kyorin Pharmaceutical Co., Ltd.
    Inventors: Hiroyuki Miyachi, Masahiro Nomura, Takahiro Tanase, Koji Murakami, Masaki Tsunoda
  • Patent number: 6730687
    Abstract: The invention provides novel substituted benzylthiazolidine-2,4-dione derivatives that bind to receptor to activate as ligands of human peroxisome proliferator-activated receptor (PPAR) and exhibit blood glucose-decreasing action and lipid-decreasing action, and processes for preparing them. It relates to substituted benzylthiazolidine-2,4-dione derivatives represented by the general formula (1) [wherein the bond mode of A denotes —CH2CONH—, —NHCONH—, —CH2CH2CO— or —NHCOCH2—, and B denotes a lower alkyl group with carbon atoms of 1 to 4, lower alkoxy group with carbon atoms of 1 to 3, halogen atom, trifluoromethyl group, trifluoromethoxy group, phenyl group which is unsubstituted or may have substituents, phenoxy group which is unsubstituted or may have substituents or benzyloxy group which is unsubstituted or may have substituents], their medicinally acceptable salts, their hydrates and processes for preparing them.
    Type: Grant
    Filed: February 25, 2002
    Date of Patent: May 4, 2004
    Assignee: Kyorin Pharmaceutical Co., Ltd.
    Inventors: Hiroyuki Miyachi, Masahiro Nomura, Takahiro Tanase, Koji Murakami, Masaki Tsunoda
  • Publication number: 20030187068
    Abstract: The invention provides novel substituted phenylpropionic acid derivatives that bind to the receptor as ligands of human peroxisome proliferator-activated receptor a (PPAR&agr;) to activate and exhibit potent lipid-decreasing action, and processes for preparing them.
    Type: Application
    Filed: November 29, 2002
    Publication date: October 2, 2003
    Inventors: Hiroyuki Miyachi, Masahiro Nomura, Yukie Takahashi, Takahiro Tanase, Kouji Murakami, Masahiro Suzuki
  • Patent number: 6506797
    Abstract: The invention provides novel substituted phenylpropanoic acid derivatives that activate by binding to receptor as ligands of human peroxisome preliferant-activated receptor &agr; (PPAR&agr;), and exhibit potent decreasing action on lipids in blood (cholesterol and triglyceride). It relates to a substituted phenylpropanoic acid derivatives represented by a general formula (1), their pharmaceutically acceptable salts and their hydrates, and processes for preparing them.
    Type: Grant
    Filed: December 10, 2001
    Date of Patent: January 14, 2003
    Assignee: Kyorin Pharmaceutical Co., Ltd.
    Inventors: Masahiro Nomura, Yukie Takahashi, Takahiro Tanase, Hiroyuki Miyachi, Masaki Tsunoda, Tomohiro Ide, Koji Murakami
  • Patent number: 6103747
    Abstract: The invention relates to the imidazole derivatives as selective antagonistic substances against muscarinic acetylcholine and provides imidazole derivatives represented by a general formula (1) or (2) ##STR1## [wherein R.sub.1 is a phenyl group which may have substituent or thienyl group, R.sub.2 is a cyano group, a carboxyl group, CONR.sub.7 R.sub.8 group (wherein R.sub.7 and R.sub.8 each independently represent hydrogen atom or lower alkyl group, or R.sub.7 and R.sub.8 may form a ring by alkylene chain which may contain hetero atom) or COOR.sub.9 group (wherein R.sub.9 is a lower alkyl group), R.sub.3 is a hydrogen atom or lower alkyl group, R.sub.4, R.sub.5 and R.sub.6 each independently represent hydrogen atom, lower alkyl group which may have substituent or cycloalkyl groups, or may form a condensed ring at the positions of R.sub.5 and R.sub.6 with benzene ring, R.sub.10 is a lower alkyl group or an aralkyl group which may have substituent, m is an integer from 1 to 6, and z is a halogen atom].
    Type: Grant
    Filed: May 19, 1999
    Date of Patent: August 15, 2000
    Assignee: Kyorin Pharmaceutical Co., Ltd.
    Inventors: Hiroyuki Miyachi, Kei Okazaki, Hiromi Kiyota, Mitsuru Segawa
  • Patent number: 6071950
    Abstract: Novel N-substituted pyrrolidine derivatives having a highly selective and potent antagonism against smooth muscle muscarine receptors and being useful for the treatment of irritable bowel syndrome and the like, characterized by being represented by general formula (1) wherein R represents a hydrogen atom, a halogen atom, or a lower alkoxy group and a process for preparing the same.
    Type: Grant
    Filed: June 2, 1999
    Date of Patent: June 6, 2000
    Assignee: Kyorin Pharmaceutical Co., Ltd.
    Inventors: Hiroyuki Miyachi, Masato Hoshino, Naoki Ando, Fumiyoshi Kobayashi
  • Patent number: 5932607
    Abstract: The invention relates to the imidazole derivatives as selective antagonistic substances against muscarinic acetylcholine and provides imidazole derivatives represented by a general formula (1) or (2) ##STR1## ?wherein R.sub.1 is a phenyl group which may have substituent or thienyl group, R.sub.2 is a cyano group, a carboxy group, CONR.sub.7 R.sub.8 group (wherein R.sub.7 and R.sub.8 each independently represent hydrogen atom or lower alkyl group, or R.sub.7 and R.sub.8 may form a ring by alkylene chain which may contain hetero atom) or COOR.sub.9 group (wherein R.sub.9 is a lower alkyl group), R.sub.3 is a hydrogen atom or lower alkyl group, R.sub.4, R.sub.5 and R.sub.6 each independently represent hydrogen atom, lower alkyl group which may have substituent or cycloalkyl groups, or may form a condensed ring at the positions of R.sub.5 and R.sub.6 with benzene ring, R.sub.10 is a lower alkyl group or aralkyl group which may have substituent, m is an integer from 1 to 6, and Z is a halogen atom!.
    Type: Grant
    Filed: June 10, 1996
    Date of Patent: August 3, 1999
    Assignee: Kyorin Pharmaceutical Co., Ltd.
    Inventors: Hiroyuki Miyachi, Kei Okazaki, Hiromi Kiyota, Mitsuru Segawa
  • Patent number: 5777967
    Abstract: A phase error between an information signal including a reference signal that can be detected asynchronously and a synchronized signal that is synchronously produced from the information signal is detected, and a signal in response to an absolute value of the phase error is produced. Further, a defect detecting signal is produced in response to the absolute value of the phase error. Therefore, whether a pulse signal exceeding a maximum value of the pulse width of the information signal, that is, a pulse signal exceeding the pulse width of the reference signal, is detected or not, it is possible to detect that the signal reproduction enters a defect region immediately after the entry. Accordingly, a defect with noise or a track jumping can be detected rapidly.
    Type: Grant
    Filed: April 5, 1996
    Date of Patent: July 7, 1998
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hiromichi Ishibashi, Toshiyuki Shimada, Yasuaki Edahiro, Mitsurou Moriya, Ryusuke Horibe, Hiroyuki Miyachi
  • Patent number: 5666341
    Abstract: A reproduced signal is digitized so as to count a time interval of a specified pattern simultaneously with the count of a clock period of a phase lock loop circuit. A phase lock loop clock frequency is subjected to a feedback control based on the information indicated the difference between the time interval and the clock period. In this manner, a frequency loop performs a feedback operation so that a frequency of the reproduced signal falls within a capture range of a phase lock-in, thereby increasing the speed of phase lock-in.
    Type: Grant
    Filed: September 13, 1996
    Date of Patent: September 9, 1997
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Ryusuke Horibe, Toshiyuki Shimada, Hiromiti Ishibashi, Hiroyuki Miyachi