Filter, smoking articles containing the same, filter strands...

Details Filter, smoking articles containing the same, filter strands... Filter, smoking articles containing the same, filter strands...

2002-12-10

2011-11-01

Crispino, Richard (Department: 1747)

Manufacturing container or tube from paper; or other manufacturi

Cigarette filter making

By assembling dissimilar filter materials

C493S042000, C493S050000, C131S331000, C131S341000, C131S342000, C131S344000, C131S345000

Reexamination Certificate

active

08047977

ABSTRACT:
The invention relates to a filter (10) for tobacco products with a first terminal filter element (12), a second terminal filter element (14), a middle filter element (16) which is located between first and second terminal filter element and contains a granular filter material, and a casing (20), one part of one of the terminal filter elements (12) being displaceable vis-à-vis the casing (20). The invention furthermore relates to smoking articles with such filters, filter strands with two or more of the filters, and processes and devices for the production of such filters and tobacco products.

REFERENCES:
patent: 3354887 (1967-11-01), Hall
patent: 3547009 (1970-12-01), Molins
patent: 3715957 (1973-02-01), Hall
patent: 4116602 (1978-09-01), Hall
patent: 5069231 (1991-12-01), Rutherford
patent: 5787902 (1998-08-01), Shepherd et al.
patent: 1 782 352 (1971-08-01), None
patent: 2 164 824 (1972-07-01), None
patent: 42 06 510 (1993-09-01), None
Wikipedia contributors, “Cigarette,” Wikipedia, The Free Encyclopedia, http://en.wikipedia.org/w/index.php?title=Cigarette&oldid=224391609 (accessed Jul. 9, 2008).

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