Patents by Inventor Federico Butelman

Federico Butelman 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).

  • Complexes of iron or other metals with sulphonated derivatives of chitosan
    Patent number: 5021561
    Abstract: Complexes of iron or other metals with sulphonated derivatives of chitosan, having the following general formula (I): ##STR1## in which: R is H or a C.sub.1 -C.sub.5 alkyl group, or an arylalkyl group;A is H or an alkaline metal or an alkaline earth metal;X is a pharmacologically acceptable anion;m is a whole number from 50 to 1000;n is zero or a whole number from 1 to 10;M is Fe.sup.II, Fe.sup.III, Mg, Ca or Bi.
    Type: Grant
    Filed: November 20, 1989
    Date of Patent: June 4, 1991
    Assignee: Etablissement Texcontor
    Inventor: Federico Butelman
  • Esterified ephedrine derivatives with prolonged antiulcer activity
    Patent number: 4990522
    Abstract: Esterified ephedrine derivatives with prolonged antiulcer activity and low toxicity, having the following general formula: ##STR1## in which R is: ##STR2## The invention also describes a process for preparing derivatives of formula (I) and compositions containing them as active principle.
    Type: Grant
    Filed: March 2, 1990
    Date of Patent: February 5, 1991
    Assignee: Establissement Texcontor
    Inventor: Federico Butelman
  • Esterified ephedrine drivatives with prolonged antiulcer activity
    Patent number: 4935444
    Abstract: Esterified ephedrine derivatives with prolonged antiulcer activity and low toxicity, having the following general formula: ##STR1## in which R is: ##STR2## The invention also describes a process for preparing derivatives of formula (I) and compositions containing them as active principle.
    Type: Grant
    Filed: October 6, 1988
    Date of Patent: June 19, 1990
    Assignee: Etablissement Texcontour
    Inventor: Federico Butelman