Patents by Inventor Nadezhda L. Filippova

Nadezhda L. Filippova 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).

  • Production of vodka by supercooling technology
    Patent number: 5618573
    Abstract: A method of treating a mixture of ethyl alcohol and water for the reduction of impurities comprising: contacting the mixture with three layers of activated charcoal having specified surface activities at a temperature of from -45.degree. C. to -22.degree. C., followed by contacting the mixture with three other layers of activated charcoal having specified surface activities at a temperature of from -22.degree. C. to 5.degree. C.
    Type: Grant
    Filed: November 20, 1995
    Date of Patent: April 8, 1997
    Assignee: RTD Corporation
    Inventors: Irina V. Filippova, Nadezhda L. Filippova