Patents by Inventor Irina M. Ermakova

Irina M. Ermakova 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 producing high-molecular products from collagen-containing materials, and product produced by the same
    Patent number: 5720778
    Abstract: A method of producing a collagen-containing material has the steps of comminuting untanned collagen-containing raw material, preparing from the raw material a collagen solution, preparing a leather paste from tanned collagen-containing waste, mixing the collagen solution and the leather paste to produce a mixture, adding a cross-linking agent to the mixture, freezing and unfreezing the mixture, and performing a preliminary treatment of the untanned collagen-containing raw material with a solution of alkali and a surfactant with pH less than 9.5.
    Type: Grant
    Filed: September 4, 1996
    Date of Patent: February 24, 1998
    Assignee: Boston Bay International, Inc.
    Inventors: Irina M. Ermakova, Boris S. Khaytin, Arcady L. Beleske