Filter having a shaped rim structure and a flavor capsule
US-12144371-B2 · Nov 19, 2024 · US
Filter element comprising smoke-altering material
US8997755B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8997755-B2 |
| Application number | US-61635909-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 11, 2009 |
| Priority date | Nov 11, 2009 |
| Publication date | Apr 7, 2015 |
| Grant date | Apr 7, 2015 |
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- Title
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Abstract
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The invention provides a filter element of a smoking article having a longitudinal axis and adapted for filtration of mainstream smoke generated by the smoking article, the filter element including a first region extending along the longitudinal axis of the filter element and exhibiting a first pressure drop and a second region extending along the longitudinal axis of the filter element and exhibiting a second pressure drop lower than said first pressure drop, wherein the first and second regions are arranged in a side-by-side configuration such that both regions are visible in a cross-section of the filter element perpendicular to the longitudinal axis, and wherein mainstream smoke can move from the second region into the first region, and further comprising a smoke-altering material, such as an oxidation catalyst, positioned in the first region.
First claim
Opening claim text (preview).
What is claimed is: 1. A filter element of a smoking article having a longitudinal axis and adapted for filtration of mainstream smoke generated by the smoking article, comprising a first region extending along the longitudinal axis of the filter element and exhibiting a first pressure drop and a second region extending along the longitudinal axis of the filter element and exhibiting a second pressure drop lower than said first pressure drop, wherein the first and second regions ar…
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Frequently asked questions
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- What does patent US8997755B2 cover?
- The invention provides a filter element of a smoking article having a longitudinal axis and adapted for filtration of mainstream smoke generated by the smoking article, the filter element including a first region extending along the longitudinal axis of the filter element and exhibiting a first pressure drop and a second region extending along the longitudinal axis of the filter element and exh…
- Who is the assignee on this patent?
- Norman Alan Benson, Ingebrethsen Bradley James, Reynolds Tobacco Co R
- What technology area does this patent fall under?
- Primary CPC classification A24D3/048. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Tue Apr 07 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).