Patents by Inventor Felix D. Rosario

Felix D. Rosario 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).

  • Pure clean cigarette filter
    Patent number: 5161549
    Abstract: An improved tobacco smoke filter which retains a majority of the tar and nicotine and noxious gases from tobacco smoke. The filter is composed of fibrous filaments having equal quantities of two organic acids or salts of organic acids or polyhydric alcohols dispersed throughout the fibrous filaments.
    Type: Grant
    Filed: October 12, 1990
    Date of Patent: November 10, 1992
    Assignee: Regional Research & Development Corporation
    Inventor: Felix D. Rosario