Patents by Inventor Toshio Miyawaki

Toshio Miyawaki 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: 9108986
    Abstract: Provided are a novel chiral iridium(III) complex; and a method for producing optically active 2-substituted-1,2,3,4-tetrahydroquinolines from 2-substituted-quinolines with the use of the chiral iridium(III) complex through a more economical and easy production process.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: August 18, 2015
    Assignee: HAMARI CHEMICALS, LTD.
    Inventors: Sadayuki Maeda, Tatsunori Sato, Yasuhiko Kawano, Toshio Miyawaki
  • Publication number: 20140228572
    Abstract: Provided are a novel chiral iridium(III) complex; and a method for producing optically active 2-substituted-1,2,3,4-tetrahydroquinolines from 2-substituted-quinolines with the use of the chiral iridium(III) complex through a more economical and easy production process.
    Type: Application
    Filed: July 13, 2012
    Publication date: August 14, 2014
    Applicant: HAMARI CHEMICALS, LTD.
    Inventors: Sadayuki Maeda, Tatsunori Sato, Yasuhiko Kawano, Toshio Miyawaki
  • Patent number: 7649001
    Abstract: The present invention provides a compound represented by the general formula: [wherein Ring A represents an optionally substituted 5- to 8-membered ring, Ring B represents a further optionally substituted 4- to 10-membered ring, Ring C represents a further optionally substituted benzene ring, X1 represents carbon atom, X2 represents a carbon atom, an oxygen atom, etc., W represents a nitrogen atom, etc., Y11 represents a group represented by the formula CR2R3? (wherein R2 represents a hydrogen atom, a cyano group, a nitro group, etc., and R3? represents a hydrogen atom, a cyano group, a nitro group, etc., respectively), Y21 represents a group represented by the formula CR4R5? (wherein R4 represents a hydrogen atom, a cyano group, a nitro group, etc., and R5? represents a hydrogen atom, a cyano group, a nitro group, etc., respectively), etc., and R1 represents an electron-withdrawing group, respectively.
    Type: Grant
    Filed: August 11, 2003
    Date of Patent: January 19, 2010
    Assignee: Takeda Pharmaceutical Company Limited
    Inventors: Mitsuru Shiraishi, Takahito Hara, Masami Kusaka, Naoyuki Kanzaki, Satoshi Yamamoto, Toshio Miyawaki
  • Publication number: 20060106067
    Abstract: The present invention provides a compound represented by the general formula: [wherein Ring A represents an optionally substituted 5- to 8-membered ring, Ring B represents a further optionally substituted 4- to 10-membered ring, Ring C represents a further optionally substituted benzene ring, X1 represents carbon atom, X2 represents a carbon atom, an oxygen atom, etc., W represents a nitrogen atom, etc., Y11 represents a group represented by the formula CR2R3? (wherein R2 represents a hydrogen atom, a cyano group, a nitro group, etc., and R3? represents a hydrogen atom, a cyano group, a nitro group, etc., respectively), Y21 represents a group represented by the formula CR4R5? (wherein R4 represents a hydrogen atom, a cyano group, a nitro group, etc., and R5? represents a hydrogen atom, a cyano group, a nitro group, etc., respectively), etc., and R1 represents an electron-withdrawing group, respectively.
    Type: Application
    Filed: August 11, 2003
    Publication date: May 18, 2006
    Inventors: Mitsuru Shiraishi, Takahito Hara, Masami Kusaka, Naoyuki Kanzaki, Satoshi Yamamoto, Toshio Miyawaki
  • Publication number: 20050227223
    Abstract: A method for diagnosing a viral infection without complicating bacterial infection, which comprises determining a C-reactive protein and an MxA protein in a biological sample; a kit for judging viral infection without complicating bacterial infection, which comprises a reagent for determining a C-reactive protein and a reagent for determining an MxA protein in a biological sample.
    Type: Application
    Filed: March 20, 2003
    Publication date: October 13, 2005
    Inventor: Toshio Miyawaki
  • Publication number: 20030187023
    Abstract: A compound represented by the formula: 1
    Type: Application
    Filed: January 16, 2003
    Publication date: October 2, 2003
    Inventors: Keiji Kubo, Toshio Miyawaki, Masaki Kawamura
  • Patent number: 6020334
    Abstract: The present invention provides compounds and medicines effective for prophylaxis and therapy of various diseases by controlling or inhibiting cell-adhesion. Especially, the compounds of this invention perform platelet aggregation action without remarkable elongation of hemorrhagic period and can be used as a safe and long-acting antithrombotic drug as compared with known substances showing the same activity.
    Type: Grant
    Filed: September 1, 1998
    Date of Patent: February 1, 2000
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Hideto Fukushi, Takehiko Naka, Zen-ichi Terashita, Toshio Miyawaki
  • Patent number: 5935963
    Abstract: The present invention provides compounds and medicines effective for prophylaxis and therapy of various diseases by controlling or inhibiting cell-adhesion. Especially, the compounds of this invention perform platelet aggregation action without remarkable elongation of hemorrhagic period and can be used as a safe and long-acting antithrombotic drug as compared with known substances showing the same activity.
    Type: Grant
    Filed: July 10, 1996
    Date of Patent: August 10, 1999
    Assignee: Takeda Chemical Industries, Ltd
    Inventors: Hideto Fukushi, Takehiko Naka, Zen-ichi Terashita, Toshio Miyawaki
  • Patent number: 5344928
    Abstract: There is disclosed a novel phenothiazine derivative of the general formula (I): ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are the same or different and are a C.sub.1-6 alkyl group and at least one of them has as a substituent a group which can react with amino group, thiol group or carboxyl group, and X.sup.- is a counter ion of the phenazathionium. Their production and the intermediates used in the production are also disclosed. The compound (I) is a derivative of methylene blue and is applicable to photodynamic therapy of cancer or immunoassays utilizing chemiluminescence.
    Type: Grant
    Filed: April 14, 1992
    Date of Patent: September 6, 1994
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Hirotomo Masuya, Hiroshi Shimadzu, Toshio Miyawaki, Marvin A. Motsenbocker
  • Patent number: 4517361
    Abstract: A compound of the formula: ##STR1## wherein R.sup.1 represents hydrogen or an alkyl group, X represents oxygen or sulfur or a group of formula -NR.sup.2 (where R.sup.2 is hydrogen or an alkyl group and in the case of alkyl, it may form a ring jointed with R.sup.1), and Y represents acetoxy group or a group of formula -SR.sup.3 (where R.sup.3 is a nitrogen-containing heterocyclic group), or a pharmaceutically acceptable salt thereof, is found to have a broad antimicrobial spectrum and, in particular, effective against gram-negative bacteria including Escherichia coli, Klebsiella pneumoniae, Proteus vulgaris, Proteus morganii, as well as gram positive ones. Thus, these compounds may be used for antimicrobial agents in therapeutical purposes.
    Type: Grant
    Filed: March 31, 1983
    Date of Patent: May 14, 1985
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Mitsuo Numata, Isao Minamida, Masayoshi Yamaoka, Mitsuru Shiraishi, Toshio Miyawaki
  • Patent number: 4421912
    Abstract: A compound of the formula: ##STR1## wherein R.sup.1 represents hydrogen or an alkyl group, X represents oxygen or sulfur or a group of formula --NR.sup.2 (where R.sup.2 is hydrogen or an alkyl group and in the case of alkyl, it may form a ring jointed with R.sup.1), and Y represents acetoxy group or a group of formula --SR.sup.3 (where R.sup.3 is a nitrogen-containing heterocyclic group), or a pharmaceutically acceptable salt thereof, is found to have a broad antimicrobial spectrum and, in particular, effective against gram-negative bacteria including Escherichia coli, Klebsiella pneumoniae, Proteus vulgaris, Proteus morganii, as well as gram positive ones. Thus, these compounds may be used for antimicrobial agents in therapeutical purposes.
    Type: Grant
    Filed: February 18, 1981
    Date of Patent: December 20, 1983
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Mitsuo Numata, Isao Mimamida, Masayoshi Yamaoka, Mitsuru Shiraishi, Toshio Miyawaki
  • Patent number: 4379924
    Abstract: A compound of the formula: ##STR1## wherein R.sup.1 represents hydrogen or an alkyl group, X represents oxygen or sulfur or a group of formula --NR.sup.2 (where R.sup.2 is hydrogen or an alkyl group and in the case of alkyl, it may form a ring jointed with R.sup.1), and Y represents acetoxy group or a group of formula --SR.sup.3 (where R.sup.3 is a nitrogen-containing heterocyclic group), or a pharmaceutically acceptable salt thereof, is found to have a broad antimicrobial spectrum and, in particular, effective against gram-negative bacteria including Escherichia coli, Klebsiella pneumoniae, Proteus vulgaris, Proteus morganii, as well as gram positive ones. Thus, these compounds may be used for antimicrobial agents in therapeutical purposes.
    Type: Grant
    Filed: December 23, 1977
    Date of Patent: April 12, 1983
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Mitsuo Numata, Isao Mimamida, Masayoshi Yamaoka, Mitsura Shiraishi, Toshio Miyawaki
  • Patent number: 4251657
    Abstract: A halogenoacetyl group is removed from a halogenoacetyl amino compound in a short period of reaction time by reacting the halogenoacetyl amino compound with an N-substituted dithiocarbamic acid or a salt thereof.
    Type: Grant
    Filed: December 5, 1978
    Date of Patent: February 17, 1981
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Michihiko Ochiai, Akira Morimoto, Toshio Miyawaki
  • Patent number: 4080498
    Abstract: A compound of the formula: ##STR1## wherein R.sup.1 represents hydrogen or an alkyl group, X represents oxygen or sulfur or a group of formula --NR.sup.2 (where R.sup.2 is hydrogen or an alkyl group and in the case of alkyl, it may form a ring jointed with R.sup.1), and Y represents acetoxy group or a group of formula --SR.sup.3 (where R.sup.3 is a nitrogen-containing heterocyclic group), or a pharmaceutically acceptable salt thereof, is found to have a broad antimicrobial spectrum and, in particular, effective against gram-negative bacteria including Escherichia coli, Klebsiella pneumoniae, Proteus vulgaris, Proteus morganii, as well as gram positive ones. Thus, these compounds may be used for antimicrobial agents in therapeutical purposes.
    Type: Grant
    Filed: December 20, 1974
    Date of Patent: March 21, 1978
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Mitsuo Numata, Isao Minamida, Masayoshi Yamaoka, Mitsuru Shiraishi, Toshio Miyawaki
  • Patent number: 4011214
    Abstract: Novel cephalosporin compounds of the formula ##STR1## wherein R.sup.1 is an acyl group and R.sup.2 is an alkylene group which may be substituted with a lower alkoxyl group, or pharmaceutically acceptable salt thereof, have strong inhibitory actions on broad spectra of gram-positive and gram-negative bacteria and, particularly against Esherichia coli and Klebsiella pneumoniae. Thus, the compounds are useful as therapeutic agent for various bacterial infections of animals including human beings.
    Type: Grant
    Filed: December 20, 1974
    Date of Patent: March 8, 1977
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Shinji Terao, Mitsuru Shiraishi, Toshio Miyawaki, Isao Minamida, Masayoshi Yamaoka, Mitsuo Numata
  • Patent number: 3984401
    Abstract: A 3-hydroxymethylcephalosporin which is not protected at the carboxyl group can be directly oxidized with a hexavalent chromium compound to give in good yield a lactol type cephalosporin represented by the general formula: ##SPC1##Wherein R.sup.1 is hydrogen or an alkoxy group and R.sup.2 is an acylamino, or imido group. The resulting compounds are very useful and important as intermediates for preparing, e.g. 3-alkoxyiminomethyl cephalosporins.
    Type: Grant
    Filed: December 7, 1973
    Date of Patent: October 5, 1976
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Shinji Terao, Mitsuru Shiraishi, Toshio Miyawaki, Isao Minamida, Masayoshi Yamaoka, Yoshio Imashiro, Mitsuo Numata