Patents by Inventor Ryuji Sakazaki

Ryuji Sakazaki 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).

  • Antibiotic stalobacins
    Patent number: 6103231
    Abstract: Novel antibiotic stalobacins H-1 and I-1 having physico-chemical properties as shown in Table 4 are provided, which are excellent antibiotics showing marked effects on Gram-positive bacteria.
    Type: Grant
    Filed: December 9, 1997
    Date of Patent: August 15, 2000
    Assignee: Shionogi & Co., Ltd.
    Inventors: Shigeru Matsutani, Tadashi Yoshida, Ryuji Sakazaki, Koichi Matsumoto, Shigeo Yagi, Bunji Kageyama, Yoshimi Kawamura, Toshiyuki Kamigauchi, Susumu Kamata
  • Substituted benzoate derivatives
    Patent number: 5473096
    Abstract: The present invention relates to the compounds of the formula: ##STR1## in which R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, and R.sup.8 are independently hydrogen, lower alkyl which is optionally substituted, lower alkoxy which is optionally substituted, hydroxy, acyloxy, or halogen; R.sup.9 is hydrogen, hydroxy, acyloxy, lower alkyl which is optionally substituted, lower alkoxy which is optionally substituted, or lower alkylamino which is optionally substituted; E.sup.1 is hydrogen, or an ester residue; m is an integer of from 1 to 4;or a pharmaceutically acceptable salt thereof. The compounds of the present invention exhibit phospholipase A.sub.2 inhibitory activity, and can be used in treating inflammatory conditions.
    Type: Grant
    Filed: July 21, 1993
    Date of Patent: December 5, 1995
    Assignee: Shionogi & Co., Ltd.
    Inventors: Shigeru Matsutani, Tadashi Yoshida, Ryuji Sakazaki, Yasuhiko Fujii, Kazushige Tanaka
  • Antibiotic stalobacins
    Patent number: 5456910
    Abstract: Novel antibiotic stalobacins A to I having physico-chemical properties as shown in Tables 1 to 4 are provided, which are excellent antibiotics showing marked effects on Gram-positive bacteria.
    Type: Grant
    Filed: May 17, 1994
    Date of Patent: October 10, 1995
    Assignee: Shionogi & Co., Ltd.
    Inventors: Shigeru Matsutani, Tadashi Yoshida, Ryuji Sakazaki, Koichi Matsumoto, Shigeo Yagi, Bunji Kageyama, Yoshimi Kawamura, Toshiyuki Kamigauchi, Susumu Kamata