Patents Assigned to Centre Technique du Cuir
  • Patent number: 4511653
    Abstract: This process of preparation consists in subjecting said placental tissue after pressing, grinding and washing in a neutral and acid medium to a treatment in alkaline medium at a temperature less than or equal to C. and in then subjecting the portions of collagen solubilized during this treatment, as well as the collagen solutions resulting from an eventual subsequent treatment for the solubilization, at least partial, of the insoluble residue, to purification by chromatography on an anion exchange resin, at a temperature less than or equal to C., followed with fractional precipitation of the collagens by salts in acid medium.The human collagenous materials obtained can be used as biomaterials in biotechnology and in pharmacy and are perfectly immunologically innocuous for the human species.
    Type: Grant
    Filed: October 14, 1983
    Date of Patent: April 16, 1985
    Assignees: Foundation Merieux, Centre Technique du Cuir
    Inventors: Dominique Play, Marc Bonneau, Charles Merieux, Daniel Herbage, Philippe Comte
  • Patent number: 4451397
    Abstract: New and highly stable preparations containing collagen in association with mucopolysaccharides are obtained by combining a homogeneous gel or solution of crosslinked or decrosslinked collagen, and a solution of CSA or CSC, and bringing the pH to 7.
    Type: Grant
    Filed: November 22, 1982
    Date of Patent: May 29, 1984
    Assignee: Centre Technique du Cuir
    Inventors: Alain R. Huc, Roland L. Allard, Christian L. Chavrier