Patents by Inventor Eduard Ringgenberg

Eduard Ringgenberg 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 rod and method of making same
    Patent number: 5229166
    Abstract: A method of forming a gummed band on a web of paper (1) is provided. A marginal band (7) forming a seam is projected by one (10) of two devices (10, 11) under the action of compressed-air pressure, the air being pre-heated (20) and passing into a feed line (19), whereas an inside gummed band (6) is formed by the other device (11) fed with cold compressed air through a duct (21). An adhesive is contained in a reservoir (8), kept under pressure by means of a tube (12), and reaches the projection device through another duct (9).
    Type: Grant
    Filed: July 31, 1992
    Date of Patent: July 20, 1993
    Assignee: Fabriques de Tabac Reunies, S.A.
    Inventors: Michel Grossmann, Eduard Ringgenberg