Patents by Inventor Andre E. Brack

Andre E. Brack 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).

  • Method of preparing a copolymer of two .alpha.-amino acids and a copolymer thus obtained
    Patent number: 5135754
    Abstract: The invention provides a method of synthesizing a copolymer of two .alpha.-amino acids which comprises the preparation of an N-carboxyanhydride of a first .alpha.-amino acid and the N-carboxyanhydride of a second .alpha.-amino acid, followed by the copolymerization of this mixture. The mixture is obtained by the reaction of phosgene with a mixture of a first and the second .alpha.-amino acids, the amino acids having similar reaction rates with phosgene. It also relates to the copolymer obtained by implementation of this method and an agent for covering skin wounds comprising this copolymer.
    Type: Grant
    Filed: February 15, 1991
    Date of Patent: August 4, 1992
    Assignee: Delalande S.A.
    Inventor: Andre E. Brack