Patents by Inventor Masao Omata

Masao Omata 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).

  • Quinone-based therapeutic agent for hepatopathy
    Patent number: 7138433
    Abstract: With an object of providing an agent for treating hepatic disease by inhibiting occurrence of hepatic disease, in particular portal venous invasion, there is disclosed an agent for treating or preventing hepatic disease containing menatetrenone as an active ingredient thereof. This agent for treating or preventing hepatic disease is effective against hepatic cancer, in particular DCP (des-?-carboxy prothrombin) positive hepatic cancer. Moreover, the agent for treating or preventing hepatic disease containing menatetrenone as an active ingredient thereof according to the present invention exhibits remarkable effects in improving the prognosis after hepatic cancer treatment, and exhibits excellent effects as an agent for inhibiting the recurrence of hepatic cancer.
    Type: Grant
    Filed: September 16, 2003
    Date of Patent: November 21, 2006
    Assignee: Eisai Co., Ltd.
    Inventors: Yukihiro Koike, Yasushi Shiratori, Masao Omata, Toshihiko Mizuta, Kyosuke Yamamoto
  • Quinone-based therapeutic agent for hepatopathy
    Publication number: 20050075404
    Abstract: With an object of providing an agent for treating hepatic disease by inhibiting occurrence of hepatic disease, in particular portal venous invasion, there is disclosed an agent for treating or preventing hepatic disease containing menatetrenone as an active ingredient thereof. This agent for treating or preventing hepatic disease is effective against hepatic cancer, in particular DCP (des-?-carboxy prothrombin) positive hepatic cancer. Moreover, the agent for treating or preventing hepatic disease containing menatetrenone as an active ingredient thereof according to the present invention exhibits remarkable effects in improving the prognosis after hepatic cancer treatment, and exhibits excellent effects as an agent for inhibiting the recurrence of hepatic cancer.
    Type: Application
    Filed: September 16, 2003
    Publication date: April 7, 2005
    Inventors: Yukihiro Koike, Yasushi Shiratori, Masao Omata, Toshihiko Mizuta, Kyosuke Yamamoto
  • Antiviral agent for drug-resistant virus
    Publication number: 20030109498
    Abstract: 2-amino-6-arylthiopurinephosphonate used in the antiviral agent of the present invention has no toxicity such as bone marrow cell growth inhibition or mutagenicity, and has a high antiviral activity, oral absorbency and safety. Furthermore, the compound of the present invention is effective for a mutant virus which is known to exhibit resistance to the conventional antiviral agents. Therefore, the present invention can provide a useful antiviral agent which leads to the establishment of a method for treating hepatitis B, which is a medically important object.
    Type: Application
    Filed: October 29, 2001
    Publication date: June 12, 2003
    Applicant: MITSUBISHI PHARMA CORPORATION
    Inventors: Satoshi Yuasa, Naohiro Kamiya, Masao Omata