Patents by Inventor Evgenia E. Ostapenko

Evgenia E. Ostapenko 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).

  • Disintegrating rotor
    Patent number: 4747551
    Abstract: A disintegrating rotor comprising disks (1) carrying beaters (2) having a hard-faced working surface (4) that is formed by inserts (5 and 6) made from different wear-resistance materials and fitted so that harder inserts are found near the center of the beater (2) and softer inserts, to the periphery.
    Type: Grant
    Filed: September 5, 1986
    Date of Patent: May 31, 1988
    Inventors: Bella U. Shagarova, Olev G. Reemet, Evgenia E. Ostapenko, Vladimir M. Matveev