Patents by Inventor Roza Tzvetanova Kintisheva

Roza Tzvetanova Kintisheva 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).

  • Apparatus for cleaning flocculated slime and other material
    Patent number: 3997436
    Abstract: Flocculated slime to be cleaned is introduced into the top of a vertically disposed, conical precipitator having at its bottom a discharge orifice. The introduced slime flows downwardly through an apertured plate mounted substantially horizontally in the precipitator. The plate is mechanically vibrated at a frequency in the range 20-100 Hz and an amplitude in the range 0.5-1.5 mm as the slime flows therethrough to liberate impurities mechanically trapped in the slime.
    Type: Grant
    Filed: June 10, 1975
    Date of Patent: December 14, 1976
    Assignee: Vish Minno-Geoloshki Institute-Nis
    Inventors: Stoycho Mitrev Stoev, Roza Tzvetanova Kintisheva