Patents by Inventor Frederique Poinsignon

Frederique Poinsignon 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).

  • Biomaterials with a base of mixtures of collagen, chitosan and glycosaminoglycans, process for preparing them and their application in human medicine
    Patent number: 5166187
    Abstract: This biomaterial comprises at least a compound consisting of an association of collagen, chitosan acetylated to a degree of acetylation between about 10 and about 40% and of glycosaminoglycans.It has its application in orthopedics and plastic surgery and for making extracellular matrices for regeneration of nerve cells and bones as well as biocompatible envelopes.A particular application is the making of artificial skin consisting of a dermal layer of the velvet type obtained from biomaterials such as those described above.The process of obtaining this dermal layer consists in adding a collagen solution of the chitosan, then in adding to the collagen-chitosan a mixture of chondroitins 4- and 6-sulfate.
    Type: Grant
    Filed: February 15, 1989
    Date of Patent: November 24, 1992
    Assignee: Centre National de la Recherche
    Inventors: Christian Collombel, Odile Damour, Christian Gagnieu, Frederique Poinsignon, Christian Echinard, Jacques Marichy