# US 5,662,126 A · Smoke filter containing particulate smoke modifying additive

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- Number: US 5,662,126 A
- Document ID: US5662126A
- Status: Granted
- Kind: A
- Application number: 08/739,732
- Filed: 1996-11-07
- Granted: 1997-09-02
- Earliest claimed: 1990-11-19
- Assignees: Cigarette Components Limited
- Inventors: John Charlton; Paul Francis Clarke
- Web page: https://patentgrep.com/patent/US5662126A

## CPC

- A24D 3/16: of inorganic materials
- A24D 1/02: with special covers
- A24D 3/048: {containing additives}
- A24D 3/163: {Carbon}
- A24D 3/166: {Silicic acid or silicates}
- A24D: CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES

## Abstract

A filter having a longitudinal axis and having a tube formed by at least one strip [2] which is pre-coated with particulate smoke modifying additive [4] adhering thereto and which curves through at least 360.degree. about the longitudinal axis.

## Claims

### Claim 1

A tobacco smoke filter, comprising a tubular element having an inner and outer face and containing, coated on at least one of said faces, a particulate smoke-modifying sorbent additive adhering thereto, wherein said tubular element surrounds a core and comprises a sheet which is adhesively secured at an abutted or slightly lapped longitudinal seam.

### Claim 2 (depends on 1)

The tobacco smoke filter of claim 1 wherein said smoke-modifying sorbent additive is adhered to both faces of said tubular element.

### Claim 3 (depends on 1)

The tobacco smoke filter of claim 1 wherein said smoke-modifying sorbent additive is adhered to the inner face of the tubular element.