Patents by Inventor Masakatsu Ohtawa

Masakatsu Ohtawa 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).

  • Angitotensin II antagonist
    Patent number: 5266583
    Abstract: A human urinary metabolite of Losartan has been isolated and identified as structure I. ##STR1## This compound is an active angiotensin II receptor antagonist useful in the treatment of hypertension and congestive heart failure.
    Type: Grant
    Filed: September 1, 1992
    Date of Patent: November 30, 1993
    Assignee: Merck & Co., Inc.
    Inventor: Masakatsu Ohtawa
  • Angiotensin II antagonist
    Patent number: 5264447
    Abstract: A human urinary metabolite of Losartan has been isolated and identified as Structure I: ##STR1## This compound is an active angiotensin II receptor antagonist useful in the treatment of hypertension and congestive heart failure.
    Type: Grant
    Filed: September 1, 1992
    Date of Patent: November 23, 1993
    Assignee: Merck & Co., Inc.
    Inventor: Masakatsu Ohtawa