Patents by Inventor Bernadette Mandard-Cazin

Bernadette Mandard-Cazin 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).

  • Process for the preparation of cyclic sulphates
    Patent number: 5116999
    Abstract: Cyclic sulphates of formula: ##STR1## are prepared by oxidation of a cyclic sulphite of formula: ##STR2## with a hypohalite of an alkali or alkaline-earth metal and a catalytic quantity of a ruthernium derivative (RuO.sub.2, RuCl.sub.3). In formulae (I) and (II), R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 are identical or different and each represents hydrogen, halogen, alkyl, alkoxy, aryl, aryloxy or alkoxycarbonyl.
    Type: Grant
    Filed: April 12, 1990
    Date of Patent: May 26, 1992
    Assignee: Rhone Poulenc Sante
    Inventors: Pierre Le Roy, Bernadette Mandard-Cazin
  • Process for the preparation of cyclic sulphates
    Patent number: 4960904
    Abstract: Cyclic sulphates of formula: ##STR1## are prepared by oxidation of a cyclic sulphite of formula: ##STR2## with a hypohalite of an alkali or alkaline-earth metal and a catalytic quantity of a ruthernium derivative (RuO.sub.2, RuCl.sub.3). In formulae (I) and (II), R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 are identical or different and each represents hydrogen, halogen, alkyl, alkoxy, aryl, aryloxy or alkoxycarbonyl.
    Type: Grant
    Filed: September 6, 1989
    Date of Patent: October 2, 1990
    Assignee: Rhone-Poulenc Sante
    Inventors: Pierre Le Roy, Bernadette Mandard-Cazin
  • Process for preparing 1-hydroxyalkyl-5-nitroimidazoles
    Patent number: 4925952
    Abstract: Process for preparing 1-(hydroxyalkyl)nitroimidazoles of formula: ##STR1## which comprises reacting an alkylene sulphate of formula: ##STR2## with an imidazole derivative of formula: ##STR3## followed by hydrolyzing or alcoholyzing the product obtained. In the formulae (I) and (II), n is 2 or 3; in the formulae (I) and (III), R denotes hydrogen or hydrocarbon radical; and in the formula (III), X denotes hydrogen or a radical that can be removed by hydrolysis or alcoholysis.
    Type: Grant
    Filed: January 13, 1989
    Date of Patent: May 15, 1990
    Assignee: Rhone-Poulenc Sante
    Inventors: Viviane Massonneau, Michel Mulhauser, Albert Buforn, Bernadette Mandard-Cazin