Patents by Inventor Zvetana Semkova Doncheva

Zvetana Semkova Doncheva 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 for producing durable fruit-dairy and vegetable-dairy drinks
    Patent number: 4031264
    Abstract: In accordance with this invention there is provided a method for producing durable fruit-dairy and vegetable-dairy drinks, wherein 20 to 40% natural fruit or vegetable mash is mixed with 36-46% sour milk derived from skimmed or whole milk, with apple pectine, sugar syrup, citric acid (0.1-0.2%), followed by short-time high temperature sterilization, cooling, bottling and additional sterilization of the bottled drink, and wherein the various ingredients are mixed in sequence: to the sour milk the sugar syrup is added, then the pectine solution and finally the mash.
    Type: Grant
    Filed: May 15, 1975
    Date of Patent: June 21, 1977
    Assignee: DSO "Bulgarplod"
    Inventors: Angel Tomov Arolski, Velichka Borissova Usheva, Peter Vassilev Gruev, Georgi Trendafilov Richev, Zvetana Semkova Doncheva