Patents by Inventor Fatyana S. Amstislavskaya

Fatyana S. Amstislavskaya 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).

  • Ophthalmological collagen coverings
    Patent number: 5094856
    Abstract: Ophthalmologic collagen coverings derived from animal eyes and a process preparing such coverings comprising treatment of a fibrous tunic of an animal eye with an alkali metal hydroxide in a saturated solution of a salt of an alkali metal, followed by neutralization, dissolution in an aqueous solution of an organic acid, purification of the resulting solution of collagen by dialysis against a buffer solution while bringing the solution of collagen to a pH of 4.5 to 7.5 and drying the thus-obtained solution of collagen simultaneously with shaping spherical coverings therefrom.
    Type: Grant
    Filed: November 9, 1990
    Date of Patent: March 10, 1992
    Assignee: Moskovsky Nauchno-Teknichesky Complexs "Mikrochirurgija Glaza"
    Inventors: Svyatoplay N. Fyodorov, Sergey N. Bagrov, Fatyana S. Amstislavskaya, Irina A. Maklakova, Sergey V. Maslenkov