Patents by Inventor Maria Chalaux Freixa

Maria Chalaux Freixa 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).

  • Esters derived from substituted phennyl-cyclohexyl compounds
    Patent number: 6455585
    Abstract: New esters derived from substituted phenyl-cyclohexyl compounds, which are derived from Tramadol, process for obtaining them and their use for preparing a drug with analgesic properties. These new compounds of general formula (I) have a higher analgesic activity, a lower toxicity and a longer effective time period than Tramadol.
    Type: Grant
    Filed: May 4, 2001
    Date of Patent: September 24, 2002
    Assignee: Vita Invest, S.A.
    Inventors: Juan Carlos Del Castillo Nieto, Joan Huguet Clotet, Elisabet De Ramon Amat, Maria Chalaux Freixa, Marisabel Mourelle Mancini