Patents by Inventor Irina V. Fillipova

Irina V. Fillipova 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).

  • Patent number: 5393461
    Abstract: A process for preparing an emulsion of water-insoluble particles useful in the cosmetic, pharmaceutical, paint and ink industries comprising:treating the water-insoluble particles with a wetting agent in an organic solvent;combining the water-insoluble particles with an oily or polymeric substance to obtain an oily suspension;preparing an aqueous solution of a combination of surface active agents; andcombining the aqueous solution with the oily suspension to form an emulsion.
    Type: Grant
    Filed: October 4, 1993
    Date of Patent: February 28, 1995
    Assignee: RTD Corporation
    Inventor: Irina V. Fillipova
  • Patent number: 5370891
    Abstract: A method of treating a mixture of ethyl alcohol and water for the reduction of impurities comprising the steps of:a) mixing ethyl alcohol and water at a temperature of from about 5.degree. C. to about 10.degree. C. to obtain a mixture;b) flowing the mixture at a temperature of from about 5.degree. C. to about 20.degree. C. through three layers of an activated charcoal adsorber having surface activities of1) from about 0.6 to about 0.8 mg-equivalent/liter,2) from about 0.8 to about 1.0 mg-equivalent/liter, and3) from about 1.0 to about 1.4 mg-equivalent/liter respectively, and a total pore volume of from about 1.4 to 1.6 cm.sup.3 /g;c) allowing the mixture to contact the activated charcoal adsorber for about 2 to 15 minutes, preferably for about 5 to 10 minutes; andd) recovering the initial capacity of the activated charcoal adsorber by flowing a stream of dry air, having a temperature of from about 100.degree. C. to about 400.degree. C., through the activated charcoal adsorber.
    Type: Grant
    Filed: June 28, 1993
    Date of Patent: December 6, 1994
    Assignee: RTD Corporation
    Inventor: Irina V. Fillipova