Robert Ryan Johnson
Marriage and Family Therapists at Dixie Hwy, Louisville, KY

4362171, Dec 7, 1982

Nov 21, 1980

6/208951

Robert R. Johnson - Louisville KY
Daniel V. Cantrell - Prospect KY

Brown & Williamson Tobacco Corporation - Louisville KY

A24D 304

131336

A filter for a cigarette includes a porous filter rod circumscribed by a smoke impervious wrapper wherein the filter rod with the non-porous wrapper therearound is provided with at least one groove therein extending a preselected distance longitudinally therealong. The groove is closed at one end and is provided with an opening substantially at the other end in flow communication with the filter rod. Tipping material circumscribes the wrapper and is provided with flow-through openings therein in flow communication with the groove wherein ventilating air is the only fluid flowing through the groove when the filter is used in combination with a cigarette during normal smoke draw.

4365641, Dec 28, 1982

Mar 12, 1981

6/243168

Robert R. Johnson - Louisville KY

Brown & Williamson Tobacco Corporation - Louisville KY

A24D 300, A24D 304, A24D 318

131336

A cigarette filter includes a porous filter element attached to a cigarette, the element circumscribed by ventilating air ducts with an impermeable barrier therebetween so that smoke travels down the filter element and ventilating air travels down the ducts during use. The size of the ducts, the number of ducts, and the flow rate of ventilating air is so defined that substantially all of the smoke is dispersed immediately upon exiting the filter element.

4898191, Feb 6, 1990

Dec 9, 1988

7/281584

Robert R. Johnson - Louisville KY
Tilford F. Riehl - Louisville KY

Brown & Williamson Tobacco Corporation - Louisville KY

A24B 1500

131359

A smoking device having a fuel column circumscribed by a wrapper has a passage with an impermeable wall extending concentrically therethrough and a filter rod at one end of the fuel column in flow communication only with the passage. The passage is filled with a material including an aerosol releasing material. The filter is formed with a pocket coaxial with the tube and the pocket is filled with highly flavorful tobacco.

4256122, Mar 17, 1981

Apr 11, 1979

6/029230

Robert R. Johnson - Louisville KY

Brown & Williamson Tobacco Corporation - Louisville KY

A24D 304

131 10A

A filter for a cigarette includes a porour filter rod circumscribed by a non-porous or smoke impervious wrapper wherein the filter rod with the non-porous wrapper therearound is provided with grooves extending from one end thereof a preselected distance longitudinally therealong. Tipping material circumscribes the non-porous wrapper and is provided with flow-through openings therein in flow communication with the grooves. The grooves may be oriented to extend to the mouth end of the filter when connected to a cigarette, to the tobacco end of the filter when connected to the cigarette, or non-connecting grooves which extend from each end of the filter element a preselected distance therealong.

4498488, Feb 12, 1985

Dec 21, 1980

6/451892

Robert R. Johnson - Louisville KY

Brown & Williamson Tobacco Corporation - Louisville KY

A24D 304

131336

A cigarette filter includes a porous filter element attached to a cigarette, the element circumscribed by ventilating air ducts with an impermeable barrier therebetween so that smoke travels down the filter element and ventilating air travels down the ducts during use. The size of the ducts, the number of ducts, and the flow rate of ventilating air is so defined that substantially all of the smoke is dispersed immediately upon exiting the filter element.

4362172, Dec 7, 1982

Dec 1, 1980

6/211491

Robert R. Johnson - Louisville KY

Brown & Williamson Tobacco Corporation - Louisville KY

A24D 304

131336

A filter for a cigarette includes a porous filter rod circumscribed by a non-porous wrapper and a tipping material having selected openings therein for allowing ventilating air to pass therethrough. Spacing members are disposed between the non-porous wrapper and tipping material to form ventilating air channels therebetween.