Patents by Inventor Shigenobu Kadota

Shigenobu Kadota 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).

  • Sulfated tannins and their salts
    Patent number: 5159069
    Abstract: Sulfated tannins or salts thereof are herein disclosed. These compounds can be prepared by a method which comprises reacting tannin with a sulfonating agent under a basic condition. These compounds show antiviral activity and reverse transcriptase inhibitor, effects and can be used to treat patients infected with a variety of virus such as AIDS virus, herpesvirus, influenza virus or rhinovirus.
    Type: Grant
    Filed: December 14, 1989
    Date of Patent: October 27, 1992
    Assignees: Yamanouchi Pharmaceutical Co., Ltd., NipponFlour Mills Co., Ltd.
    Inventors: Fukushi Hirayama, Keijiro Uchino, Masaya Iwamoto, Akira Fukuchi, Masashi Hiramoto, Hirokazu Yamamoto, Naoki Yamamoto, Hideki Nakashima, Shigenobu Kadota, Hiroshi Ogawara
  • Q-1047 Substances
    Patent number: 4912215
    Abstract: A Q-1047 substance of the general formula (I) and methods of producing the same, which has antioxidant activity and are useful as prophylactic and therapeutic agents for nephritis.
    Type: Grant
    Filed: April 12, 1989
    Date of Patent: March 27, 1990
    Assignee: Yamanouchi Pharmaceutical Co., Ltd.
    Inventors: Hidenori Yazawa, Harumitsu Imai, Kenichi Suzuki, Shigenobu Kadota, Takeshi Saito
  • Novel microorganisms and a novel process for producing antibiotics
    Patent number: 4843008
    Abstract: Novel microorganisms belonging to the genus Micromonospora capable of producing antibiotics YS-02930 K-D, -E or -H represented by formula: ##STR1## wherein R represents a hydrogen atom or a formyl group and a dotted line represents a double bond or a bond shown by: ##STR2## are disclosed. The antibiotics are produced by culturing bacteria belonging to the genus Micromonospora capable of producing at least one antibiotic selected from YS-02930 K-D, -E and -H and, harvesting antibiotic YS-02930 K-D, -E or -H.
    Type: Grant
    Filed: December 18, 1985
    Date of Patent: June 27, 1989
    Assignee: Yamanouchi Pharmaceutical Co., Ltd.
    Inventors: Harumitsu Imai, Ken-ichi Suzuki, Shigeru Miyazaki, Shigenobu Kadota
  • 7-formylaminocephalosporin compounds
    Patent number: 4764606
    Abstract: A 7-formylaminocephalosporin compound represented by general formula (I): ##STR1## wherein R.sup.1 represents a carboxy group or an aminocarboxymethyl group ##STR2## R.sup.2 represents a hydrogen atom or a protective group for a carboxy group, andR.sup.3 represents a 5- or 6-membered heterocyclic group which may be substituted;or a salt thereof, and a process for producing the compound; The compounds are useful intermediates for other cephalosporin compounds having antibacterial activity, and themselves show antibacterial activity, as well.
    Type: Grant
    Filed: July 28, 1986
    Date of Patent: August 16, 1988
    Assignee: Yamanouchi Pharmaceutical Co., Ltd.
    Inventors: Harumitsu Imai, Ken-ichi Suzuki, Koji Nagai, Shigeru Miyazaki, Kenji Abe, Isao Takahashi, Shigenobu Kadota, Koichi Tanaka