Patents Assigned to Cigarette Components Limited
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Patent number: 6302114Abstract: The present invention provides a tobacco smoke filter or filter element having a longitudinally extending core (2) and a wrapper (4) engaged around the core (2), the wrapper (4) having particulate additive (6) adhered to one or more portion(s) of the radially inner face thereof with said wrapper (4) being free of additive around its circumference at one or both ends of the core.Type: GrantFiled: October 14, 1992Date of Patent: October 16, 2001Assignee: Cigarette Components LimitedInventors: Paul Francis Clarke, John Charlton
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Patent number: 6080457Abstract: A smoke filter consists of substrate threads and/or strips each pre-coated with particulate sorbent (e.g. activated carbon granules), gathered together in solid or tubular rod form e.g. within a containing sleeve. When the gathered threads and/or strips form a tubular body, this may be provided with a core.Type: GrantFiled: May 26, 1992Date of Patent: June 27, 2000Assignee: Cigarette Components LimitedInventors: John Charlton, Paul Francis Clarke, Ernest Brian Hayes
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Patent number: 5787902Abstract: A ventilated cigarette filter having a tobacco smoke filtering core, a tubular body of air-permeable material around the core, and an outer wrapper engaged around the tubular body and providing in use for the lateral ingress of external air therethrough into the tubular body, the core comprising a plurality of longitudinally aligned plugs of which one is an unwrapped buccal end plug of material which is the same as or similar to that of the surrounding tubular body so as to give a substantially uniform or integral buccal end appearance.Type: GrantFiled: February 18, 1997Date of Patent: August 4, 1998Assignee: Cigarette Components LimitedInventors: Richard Karl James Shepherd, John Charlton, Paul Francis Clarke
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Patent number: 5662126Abstract: 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.Type: GrantFiled: November 7, 1996Date of Patent: September 2, 1997Assignee: Cigarette Components LimitedInventors: John Charlton, Paul Francis Clarke
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Patent number: 4904308Abstract: A ventilated smoker's mouthpiece, e.g. for a cigarette, in which the degree of ventilation is readily adjustable. The mouthpiece includes a ventilating outer sleeve around a buccal end core member and an adjacent upstream core member longitudinally aligned therewith. The buccal end core member bus, extending upstream from its exposed end, a portion which is movable longitudinally relative to the remainder thereof to move the adjacent upstream core member longitudinally relative to the sleeve to vary the extent of ventilation permitted through the outer sleeve. Thus, the outer sleeve may have one or more ventilating orifices, with longitudinal movement of the adjacent upstream core member under the action of the movable portion of the buccal end core member, bringing the upstream core member at least partially into or out of blocking registration with the ventilation orifice or orifices, or altering the extent of such blocking registration, with the amount of ventilation permitted varying accordingly.Type: GrantFiled: September 2, 1987Date of Patent: February 27, 1990Assignee: Cigarette Components LimitedInventors: John Charlton, Paul F. Clarke
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Patent number: 4807647Abstract: A cigarette filter comprising longitudinally aligned core components a first of which is air-permeable and of relatively high pressure drop longitudinally of the filter but substantially air-impermeable radially of the filter and a second of which is air-permeable and of relatively low pressure drop longitudinally of the filter, and a common wrap or partial wrap which extends along and around or partially around said core components and provides for ventilation of the filter at a region longitudinally spaced from the first core component.Type: GrantFiled: October 17, 1986Date of Patent: February 28, 1989Assignee: Cigarette Components LimitedInventor: Ernest B. Hayes
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Patent number: 4774972Abstract: A tobacco smoke filter having a non-integral core of components [2, 3] joined and held in longitudinal alignment by a strip [1] which extends only partially around the core circumference to leave a gap [7] extending longitudinally of the core between the longitudinal edges [8] of the strip, and an outer wrap [5] which engages fully around the core and strip and provides--e.g. via perforations [9]--for the lateral ingress of external ventilating air therethrough and through the longitudinal gap.Type: GrantFiled: March 31, 1986Date of Patent: October 4, 1988Assignee: Cigarette Components LimitedInventor: Ernest B. Hayes