US2004200490A1PendingUtilityA1
Cigarette filter and filter-tipped cigarette
Priority: Oct 30, 2001Filed: Apr 29, 2004Published: Oct 14, 2004
Est. expiryOct 30, 2021(expired)· nominal 20-yr term from priority
A24D 3/163A24D 3/14
40
PatentIndex Score
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Claims
Abstract
A cigarette filter includes two or more filter sections of the following filter sections a filter section added with a liquid fatty acid ester or a liquid fatty acid having a viscosity of 1 to 300 cP, a filter section added with a glycol having a viscosity of 1 to 300 cP, and a filter section added with a charcoal.
Claims
exact text as granted — not AI-modifiedWhat is claimed is:
1 . A cigarette filter comprising two or more filter sections of the following three filter sections (A) to (C):
(A) a filter section added with a liquid fatty acid ester or a liquid fatty acid, having a viscosity of 1 to 300 cP; (B) a filter section added with a glycol having a viscosity of 1 to 300 cP is; and (C) a filter section added with a charcoal.
2 . The filter according to claim 1 , wherein the fatty acid ester is olive oil.
3 . The filter according to claim 1 , wherein the glycol is propylene glycol or polyethylene glycol.
4 . The filter according to claim 1 , comprising the filter section (A) and/or filter section (B), and the filter section (C) on a downstream side of these filter sections.
5 . The filter according to claim 1 , comprising a plain filter section at a most downstream position.
6 . A cigarette comprising a tobacco rod, and a filter according to claim 1 , provided at one end of the tobacco rod.Join the waitlist — get patent alerts
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