Patents by Inventor Yusuke Harada

Yusuke Harada 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).

  • .alpha.-Substituted ureido-benzylpenicillanic acids
    Patent number: 4355038
    Abstract: .alpha.-Substituted ureido-benzylpenicillanic acids of the formula ##STR1## (wherein R.sup.1, X and Y are as defined in the description) and pharmaceutically acceptable salts thereof, and a bactericidal composition comprising the above penicillanic acid or the salt and a pharmaceutically acceptable carrier are disclosed. The acids and salts thereof have high antibacterial activities against Gram-positive and Gram-negative bacteria, particularly those of the genus Pseudomonas.
    Type: Grant
    Filed: July 30, 1981
    Date of Patent: October 19, 1982
    Assignee: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Nobuhiro Oi, Bunya Aoki, Teizo Shinozaki, Kanji Moro, Toshio Kuroki, Isao Matsunaga, Takao Noto, Toshiyuki Nebashi, Yusuke Harada, Hisao Endo, Takao Kimura, Kana Kojima, Masahiko Matsumoto, Hiroshi Okazaki, Haruki Ogawa, Minoru Shindo
  • Cephalosporin derivatives
    Patent number: 4341776
    Abstract: Cephalosporin derivatives which have an excellent antibacterial action particularly against bacteria belonging to genus Pseudomonas or Serratia and are represented by the formula: ##STR1## wherein R.sub.1 R.sub.2, R.sub.3, R.sub.4, R.sub.5 and n are as defined in the specification, and salts thereof; a process for preparing the same; and an antibacterial preparation containing the same as an active ingredient are disclosed.
    Type: Grant
    Filed: March 28, 1980
    Date of Patent: July 27, 1982
    Assignee: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Nobuhiro Oi, Bunya Aoki, Teizo Shinozaki, Kanji Moro, Isao Matsunaga, Takao Noto, Toshiyuki Nebashi, Yusuke Harada, Hisao Endo, Takao Kimura, Hiroshi Okazaki, Haruki Ogawa, Minoru Shindo
  • Cephalosporin derivatives
    Patent number: 4328224
    Abstract: Cephalosporin derivatives which have an excellent antibacterial action particularly against bacteria belonging to genus Pseudomonas or Serratia and are represented by the formula: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and n are as defined in the specification, and salts thereof; a process for preparing the same; and an antibacterial preparation containing the same as an active ingredient are disclosed.
    Type: Grant
    Filed: March 28, 1980
    Date of Patent: May 4, 1982
    Assignee: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Nobuhiro Oi, Bunya Aoki, Teizo Shinozaki, Kanji Moro, Isao Matsunaga, Takao Noto, Toshiyuki Nebashi, Yusuke Harada, Hisao Endo, Takao Kimura, Hiroshi Okazaki, Haruki Ogawa, Minoru Shindo
  • Cephalosporin derivatives
    Patent number: 4301161
    Abstract: Cephalosporin derivatives which have an excellent antibacterial action particularly against bacteria belonging to genus Pseudomonas or Serratia and are represented by the formula: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and n are as defined in the specification, and salts thereof; a process for preparing the same; and an antibacterial preparation containing the same as an active ingredient are disclosed.
    Type: Grant
    Filed: March 28, 1980
    Date of Patent: November 17, 1981
    Assignee: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Nobuhiro Oi, Bunya Aoki, Teizo Shinozaki, Kanji Moro, Isao Matsunaga, Takao Noto, Toshiyuki Nebashi, Yusuke Harada, Hisao Endo, Takao Kimura, Hiroshi Okazaki, Haruki Ogawa, Minoru Shindo
  • Cephalosporin derivatives
    Patent number: 4298605
    Abstract: Cephalosporin derivatives which have an excellent antibacterial action particularly against bacteria belonging to genus Pseudomonas or Serratia and are represented by the formula: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and n are as defined in the specification, and salts thereof; a process for preparing the same; and an antibacterial preparation containing the same as an active ingredient are disclosed.
    Type: Grant
    Filed: June 11, 1979
    Date of Patent: November 3, 1981
    Assignee: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Nobuhiro Oi, Bunya Aoki, Teizo Shinozaki, Kanji Moro, Isao Matsunaga, Takao Noto, Toshiyuki Nebashi, Yusuke Harada, Hisao Endo, Takao Kimura, Hiroshi Okazaki, Haruki Ogawa, Minoru Shindo
  • Penicillanic acid derivatives
    Patent number: 4229348
    Abstract: Penicillanic acid derivatives which have an excellent antibacterial action particularly against bacteria belonging to family Pseudomonas aeruginosa and are represented by the formula ##STR1## wherein R.sub.1, R.sub.2, and R.sub.3 and n are as defined above, and salts thereof; and a process for preparing the same are disclosed.
    Type: Grant
    Filed: January 23, 1979
    Date of Patent: October 21, 1980
    Assignee: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Nobuhiro Oi, Bunya Aoki, Teizo Shinozaki, Kanji Moro, Isao Matsunaga, Takao Noto, Toshiyuki Nebashi, Yusuke Harada, Hisao Endo, Takao Kimura, Hiroshi Okazaki, Haruki Ogawa, Minoru Shindo