Patents by Inventor Hiroomi Watabe

Hiroomi Watabe 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).

  • Compositions for treating or preventing malaria and method of treating malaria
    Patent number: 6939892
    Abstract: An antibiotic SF2487 substance having the formula (I) or a salt thereof possesses an antimalarial activity against the proliferation of malarial parasites and is therefore useful as an antimalarial drug.
    Type: Grant
    Filed: April 26, 2001
    Date of Patent: September 6, 2005
    Assignee: Zaidan Hojin Biseibutsu Kagaku Kenkyu Kai
    Inventors: Tomio Takeuchi, Yusuke Wataya, Munekazu Iinuma, Hye-Sook Kim, Hiroomi Watabe, Hiroshi Naganawa, Yoshikazu Takahashi
  • Compositions for treating or preventing malaria and method of treating malaria
    Publication number: 20030176492
    Abstract: An antibiotic SF2487 substance having the formula (I) 1
    Type: Application
    Filed: January 27, 2003
    Publication date: September 18, 2003
    Inventors: Tomio Takeuchi, Yusuke Wataya, Munekazu Iinuma, Hye-Sook Kim, Hiroomi Watabe, Hiroshi Naganawa, Yoshikazu Takahashi
  • Antibiotic pyridine compound
    Patent number: 5164507
    Abstract: A substance represented by formula: ##STR1## and a salt thereof, which has antifungal activity and a process for producing the same utilizing a microorganism capable of producing the substance and belonging to the genus Streptomyces.
    Type: Grant
    Filed: May 21, 1991
    Date of Patent: November 17, 1992
    Assignee: Meiji Seika Kaisha Ltd.
    Inventors: Toru Sasaki, Akira Shimizu, Junko Yoshida, Hiroomi Watabe, Masao Koyama
  • Certain anti-tumor duocarmycin antibiotics from streptomyces
    Patent number: 4994578
    Abstract: Novel substances exhibiting antimicrobial activity and antitumor activity, a process for producing them by cultivating a microorganism belonging to the genus Streptomyces and capable of producing them and derivatives of such substances.
    Type: Grant
    Filed: April 28, 1989
    Date of Patent: February 19, 1991
    Assignee: Meiji Seika Kaisha, Ltd.
    Inventors: Kazunori Ohba, Hiroomi Watabe, Mieko Nagasawa, Shiro Sakakibara, Takashi Shomura, Masaji Sezaki, Shinichi Kondo, Masao Koyama, Tadashi Nakazawa, Haruo Yamamoto
  • Novel antitumor antibiotic substance and a method for production thereof
    Patent number: 4954641
    Abstract: An antibiotic substance represented by formula (I) ##STR1## or a pharmaceutically acceptable salt thereof, which is produced by cultivating a microorganism belonging to the genus Streptomyces and isolating the substance from the cultured cells.
    Type: Grant
    Filed: January 30, 1989
    Date of Patent: September 4, 1990
    Assignee: Meiji Seika Kaisha, Ltd.
    Inventors: Yoshikazu Sato, Hiroomi Watabe, Shigetaka Ishii, Tadashi Nakazawa, Takashi Shomura, Masaji Sezaki, Shinichi Kondo
  • Endo-deoxyribonuclease and process for the production thereof
    Patent number: 4430432
    Abstract: A novel Endo-deoxyribonuclease A (Endo-DNase A) which has the substrate specificity of recognizing specific base sequence in double-stranded deoxyribonucleic acid (DNA) molecules and cleaving the strands at specified sites in the DNA to produce specific DNA fragments and, a process for the production of the Endo-DNase A by culturing a microorganism belonging to the genus Saccharomyces or Pichia.
    Type: Grant
    Filed: March 1, 1982
    Date of Patent: February 7, 1984
    Assignee: Rikagaku Kenkyusho
    Inventors: Tadahiko Ando, Takehiko Shibata, Hiroomi Watabe