Patents by Inventor Radzhab D. Safaev

Radzhab D. Safaev 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).

  • Cigarette filter
    Patent number: 5409021
    Abstract: A cigarette filter, including at least two parts, sucessively located in the direction of tobacco smoke flow and joined by a wrapping means, one part of the filter, positioned at the side of the smoker, being made of acetate, cellulose, acetatecellulose fiber, while the other part, positioned at the side of the tobacco, is filled with an adsorbing substance, which substance is lignin.
    Type: Grant
    Filed: April 22, 1993
    Date of Patent: April 25, 1995
    Inventors: Radzhab D. Safaev, David G. Zaridze, Leonid Y. Sinelnikov