Patents by Inventor Hieu T. Phan

Hieu T. Phan 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).

  • Substituted aminophosphonate derivatives, process for their preparation and pharmaceutical compositions containing them
    Patent number: 5424303
    Abstract: The present invention relates to novel aminophosphonate derivatives substituted in .alpha. position by phenol groups, of formula (I): ##STR1## in which: X.sup.1, X.sup.2, X.sup.3, R.sup.1, R.sup.2, A, B, Z and n are defined in claim 1, as well as their preparations and the pharmaceutical compositions comprising them.
    Type: Grant
    Filed: February 26, 1993
    Date of Patent: June 13, 1995
    Assignee: Symphar SA
    Inventors: Hieu T. Phan, Lan M. Nguyen, Eric Niesor, Yves Guyon-Gellin, Craig L. Bentzen
  • Certain 2-substituted 1,3-propylidenediphosphonate derivatives, pharmaceutical compositions containing them and their use as antihypertensive agents
    Patent number: 4696920
    Abstract: 2-Substituted-1,3-propylidenediphosphonates of formula (I), where A, R.sup.1 and R.sup.2 are defined in claim 1, are therapeutically active compounds, namely for the treatment of cardiovascular diseases.They can be prepared by reacting phosphonating agents with 1,3- dibromopropanes or ditosylates of 1,3-propanediols substituted in position 2. ##STR1## .
    Type: Grant
    Filed: July 16, 1985
    Date of Patent: September 29, 1987
    Assignee: Symphar S.A.
    Inventors: Craig L. Bentzen, Yves Guyon-Gellin, Kyriacos Kalathakis, Hieu T. Phan, Lan Nguyen Mong, Eric Niesor, Jean-Robert Rossier