Patents by Inventor Michel Vert

Michel Vert 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).

  • Bone prosthesis material containing calcium carbonate particles dispersed in a bioresorbable polymer matrix
    Patent number: 5433751
    Abstract: Bioresorbable bone prosthesis material containing particles of calcium carbonate, originating, for example, from coral skeleton, dispersed within a polymer matrix, the said particles being smaller than 1 mm in size and representing from 40 to 70% of the total weight, and the said polymer being a bioresorbable polymer.
    Type: Grant
    Filed: April 1, 1993
    Date of Patent: July 18, 1995
    Assignee: INOTEB
    Inventors: Pascal Christel, Su M. Li, Michel Vert, Jean-Louis Patat
  • Polymers of citric acid and diamines, a process for their preparation and their uses, in particular as carriers of drugs
    Patent number: 5026821
    Abstract: The present invention provides polyamides produced by the condensation of diamines with citric acid through the carboxyl groups attached to the carbon atoms in positions 1 and 3.These polyamides can be used for the preparation of controlled-release forms of drugs.
    Type: Grant
    Filed: March 2, 1989
    Date of Patent: June 25, 1991
    Assignee: Sanofi
    Inventors: Mahfoud Boustta, Jovanka Huquet, Michel Vert
  • Malic acid polymers
    Patent number: 4320753
    Abstract: A polymer containing repeating units of the formula: ##STR1## wherein R.sub.1 and R.sub.2 are independently hydrogen, alkyl, aryl, aralkyl, substituted alkyl, substituted aryl, substituted aralkyl, R.sub.3 is hydrogen, alkyl or CH.sub.2n COOR.sub.8 where n is an integer of 0 to 10, R.sub.6 is OR or NR.sub.4 R.sub.5, wherein R and R.sub.8 are independently hydrogen or a group derived from a compound containing esterifiable hydroxyl groups, R.sub.4 and R.sub.5 are independently alkyl, aryl, aralkyl, substituted alkyl, substituted aryl, substituted aralkyl or together comprise an alkylene group.
    Type: Grant
    Filed: November 9, 1979
    Date of Patent: March 23, 1982
    Assignee: Research Corporation
    Inventors: Robert W. Lenz, Michel Vert
  • New prosthesis parts, their preparation and their application
    Patent number: 4279249
    Abstract: Osteosynthesis parts are made of an absorbable polymer composition consisting of a matrix of lactic acid homopolymer, or a copolymer very high in lactic acid units, having discrete reinforcement elements embedded therein. The reinforcement elements are made of glycolic acid homopolymer or copolymers predominant in glycolic acid units. Such a composition may be shaped with a minimum of polymer degradation into osteosynthesis parts exhibiting good resilience, shock resistance, and tensile strength.
    Type: Grant
    Filed: October 17, 1979
    Date of Patent: July 21, 1981
    Assignees: Agence Nationale de Valorisation de la Recherche (ANVAR), Institut National de la Sante et de la Recherche Medicale
    Inventors: Michel Vert, Francois Chabot, Jean Leray, Pascal Christel
  • Malic acid polymers
    Patent number: 4265247
    Abstract: A polymer containing repeating units of the formula: ##STR1## wherein R.sub.1 and R.sub.2 are independently hydrogen, alkyl, aryl, aralkyl, substituted alkyl, substituted aryl, substituted aralkyl, R.sub.3 is hydrogen, alkyl or --CH.sub.2).sub.n COOR.sub.8 where n is an integer of 0 to 10, R.sub.6 is OR or NR.sub.4 R.sub.5, wherein R and R.sub.8 are independently hydrogen or a group derived from a compound containing esterifiable hydroxyl groups, R.sub.4 and R.sub.5 are independently alkyl, aryl, aralkyl, substituted alkyl, substituted aryl, substituted aralkyl or together comprise an alkylene group.
    Type: Grant
    Filed: November 7, 1979
    Date of Patent: May 5, 1981
    Assignee: Research Corporation
    Inventors: Robert W. Lenz, Michel Vert