Lixin Xue

6398039, Jun 4, 2002

Oct 24, 1997

08/957211

Lixin Xue - Morristown NJ
Ronald Rohrbach - Flemington NJ
Daniel Bause - Morristown NJ
Peter Unger - Convent Station NJ
Russell Dondero - N. Arlington NJ
Gordon Jones - Toledo OH

AlliedSignal Inc. - Norristown NJ

B01D 3904

210504, 95211, 96 10, 96154, 210506, 210508, 261104, 261107, 26417713, 26417714, 428368, 428372

An unique filtration device ( ) which removes acidic contaminants such as H2S and SO2 from a fluid stream through the use of partially hollow wicking fibers ( ) impregnated with an effective amount of alkaline-generating chemical compounds, preferably also containing an effective amount of a compound with elements from Group II and Group 6-12 in +2 oxidation state, and most preferably also containing an effective amount of solid fine particles ( ). A nonwoven filter mat ( ) is formed from a plurality of the elongated fibers ( ) each having at least one internal channel ( ) connected to the fiber outer surface via an elongated opening ( ). The fluid stream containing the acidic gas phase contaminants is directed over the nonwoven filter mat ( ) whereby said plurality of small solid particles ( ) and reservoir of active chemical reagents disposed in the open channels ( ) communicate through the elongated opening ( ) with the fluid flow path and absorbs the acidic gas phase contaminants.

6584979, Jul 1, 2003

Apr 20, 2001

09/839669

Lixin Luke Xue - Midlothian VA
Kent B. Koller - Chesterfield VA
Qiong Gao - Great Neck NY

Philip Morris Incorporated - New York NY

A24D 306

131344, 131342, 131361, 131202, 131332, 131331

This invention is a highly efficient filter containing fibers that contain small particle size adsorbents/absorbents such as carbon and/or silica to selectively reduce targeted components in mainstream cigarette smoke. The invention relates to a novel class of highly efficient cigarette smoke filters made from much smaller solid fine particles (preferably 1-50 micrometers in diameter) impregnated in shaped fibers that possess open or semi-opened micro-cavity. The invention further relates to a cigarette having a plug/space/plug or plug/space configuration and having the impregnated filters resided in the space in bonded non-woven or freely unbounded manner to allow controlled TPM delivery.

6772768, Aug 10, 2004

Apr 20, 2001

09/839760

Lixin Luke Xue - Midlothian VA
Kent Brian Koller - Chesterfield VA

Philip Morris Incorporated - New York NY

A24D 304

131335, 131341, 131331, 131200

Tobacco flavorants loaded into semi-open micro cavities of shaped fibers add flavor to tobacco smoke during the smoking process. The shaped fibers are end-capped shaped multi-lobals that form semi-open cavities between the lobals to effectively entrain solid and liquid flavorant materials. The flavorant material may be in solid particulate forms, such as menthol solids and menthol impregnated carbon or silica gels, and may also be in liquid form such as menthol in dissolved or melt forms.

6779528, Aug 24, 2004

Apr 16, 2002

10/123584

Lixin Xue - Midlothian VA
Kent B. Koller - Chesterfield VA
Qiong Gao - Great Neck NY

Philip Morris Incorporated - New York NY

A24B 1500

131331, 131345, 428400

Fibers are produced from an acetone solution of cellulose acetate by pulling or extruding such material through a spinneret in a dry spinning process. A vacuum is applied to the thus formed fibers after a certain degree of drying. A dried outer skin is formed, and the vacuum causes the solvent inside the skin to explode or pop and exit the fiber along micro-porous paths thereby producing high surface area fibers with micro-porous cavities and internal void volume. Such micro-cavities are particularly useful for retaining solid and/or liquid reagents in a cigarette filter for selective filtration of various smoke components.

6863074, Mar 8, 2005

Aug 30, 2002

10/231017

Lixin Xue - Midlothian VA, US
Liqun Yu - Midlothian VA, US
Kent B. Koller - Chesterfield VA, US

Philip Morris USA Inc. - Richmond VA

A24F001/20

131207, 131202, 131342, 131331

Cigarette filters, methods for making cigarettes and methods for smoking cigarettes are provided, which involve the use of an unfunctionalized porous polyaromatic resins, which is capable of removing at least some of at least one gas phase constituent from mainstream smoke through sorption. The unfunctionalized porous polyaromatic resin may be a polymerization product of non-polar styrene and divinyl benzene. Various gas phase constituent can be removed from mainstream tobacco smoke, such as dienes, furans, pyrroles, aromatics and ketones, for example. The cigarette filters and cigarettes can provide low resistance-to-draw and/or high total particulate matter delivery. Additionally, the unfunctionalized porous polyaromatic resin may further include flavorant(s).

6907885, Jun 21, 2005

Feb 11, 2003

10/364168

Lixin Luke Xue - Midlothian VA, US
Kent B. Koller - Chesterfield VA, US
Qiong Gao - Great Neck NY, US

Philip Morris USA Inc. - Richmond VA

A24F007/04

131202, 131342, 131331, 131200, 131201

This invention is a highly efficient filter containing fibers that contain small particle size adsorbents/absorbents such as carbon and/or silica to selectively reduce targeted components in mainstream cigarette smoke. The invention relates to a novel class of highly efficient cigarette smoke filters made from much smaller solid fine particles (preferably 1-50 micrometers in diameter) impregnated in shaped fibers that possess open or semi-opened micro-cavity. The invention further relates to a cigarette having a plug/space/plug or plug/space configuration and having the impregnated filters resided in the space in bonded non-woven or freely unbounded manner to allow controlled TPM delivery.

6913784, Jul 5, 2005

Nov 14, 2002

10/294346

Lixin Luke Xue - Midlothian VA, US
Kent B. Koller - Chesterfield VA, US
Qiong Gao - Great Neck NY, US
Tim Sherwood - Midlothian VA, US
Charles E. Thomas - Richmond VA, US
George R. Scott - Midlothian VA, US
Liqun Yu - Midlothian VA, US

Philip Morris USA Inc. - New York NY

B05D001/12
B05D003/12

427180, 427174, 427346, 427348, 427369

A process of impregnating fine adsorbent particles such as carbon dust or APS silica gel powder into the micro-cavities of shaped fibers comprises the steps of continuously conveying shaped fibers with micro-cavities to a reservoir of the fine adsorbent particles. The fibers pass through the reservoir to thereby produce relative motion between the fibers and the particles. Additionally, impact forces are created between the shaped fibers and the fine particles to assist in impregnating the particles into the micro-cavities of the fibers. Any excess particles are removed from the fibers outside the reservoir, and subsequently the shaped fibers impregnated with fine adsorbent particles are collected for later use in filter applications such as cigarette filter and air filter applications, for example.

6919105, Jul 19, 2005

Jan 6, 2003

10/336951

Lixin Luke Xue - Midlothian VA, US
Kent B. Koller - Chesterfield VA, US
Qiong Gao - Great Neck NY, US

Philip Morris USA Inc. - Richmond VA

B05D001/06
B05D001/22

427482, 427459, 427475, 427485

A process of retaining fine adsorbent particles such as carbon material or APS silica gel in the micro-cavities of a shaped fiber comprises the steps of continuously conveying a shaped fiber with micro-cavities to a charging arrangement where the fiber is electrostatically charged. The electrostatically charged fiber is then drawn through a reservoir of the fine adsorbent particles. As the fiber passes through the reservoir the fine particles adhere to the fiber and the micro-cavities thereof. Any excess particles are removed from the fiber outside the reservoir. Subsequently the shaped fiber loaded with fine adsorbent particles is collected for use in filter applications of one type or another such as cigarette filters, for example.