ALEXANDRIA, Va., July 14 -- United States Patent no. 12,678,186, issued on July 14, was assigned to BTL Healthcare Technologies a.s. (Prague).

"Device and method for skin treatment" was invented by Radoslav A. Kefilev (Chepelare, Bulgaria) and Tomas Schwarz (Prague).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates in general to the field of human skin treatment, more specifically to devices and methods for cleansing and subsequent care of a person's skin. The methods effectively use the combination of mechanical cleansing strengthened by vibrations transmitted to a tip, lowered pressure and treatment liquid. The advantageous aspect of the device according to the invention is that vibration...