Inventor

BRACKMANN WARREN A

US53 patents

⚠️ This page may combine multiple inventors who share the name “BRACKMANN WARREN A”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

ROTHMANS OF PALL MALL

27 patents

US4073850AFeb 14, 1978

Method of producing polymeric material

ROTHMANS OF PALL MALL37 citations92

US3960645AJun 1, 1976

Method and apparatus for the opening of tow

ROTHMANS OF PALL MALL40 citations92

US4566470AJan 28, 1986

Tobacco leaf processing

ROTHMANS OF PALL MALL25 citations82

US4135615AJan 23, 1979

Tobacco feeding system

ROTHMANS OF PALL MALL21 citations80

US4059121ANov 22, 1977

Filter for tobacco smoke

ROTHMANS OF PALL MALL22 citations78

US4793367ADec 27, 1988

Linear layered cigarette

ROTHMANS OF PALL MALL12 citations74

US4787401ANov 29, 1988

Sculptured cigarette

ROTHMANS OF PALL MALL5 citations74

US4716913AJan 5, 1988

Composite cigarettes

ROTHMANS OF PALL MALL13 citations74

US4627447ADec 9, 1986

Tobacco winnowing method and apparatus

ROTHMANS OF PALL MALL17 citations74

US4567903AFeb 4, 1986

Formation of tobacco material blend

ROTHMANS OF PALL MALL7 citations74

US4557278ADec 10, 1985

Tobacco lamina and stem processing

ROTHMANS OF PALL MALL12 citations74

US4512353AApr 23, 1985

Tobacco drying procedure

ROTHMANS OF PALL MALL10 citations74

US4458698AJul 10, 1984

Tobacco metering and feeding system

ROTHMANS OF PALL MALL8 citations74

US4456018AJun 26, 1984

Feeding tobacco cutting machines

ROTHMANS OF PALL MALL10 citations74

US4386617AJun 7, 1983

Tobacco stem shredding

ROTHMANS OF PALL MALL13 citations74

US4233996ANov 18, 1980

Cutting leaf tobacco

ROTHMANS OF PALL MALL16 citations73

US3985481AOct 12, 1976

Extrusion head for producing polymeric material fibres

ROTHMANS OF PALL MALL20 citations73

US4754765AJul 5, 1988

Hopperless cigarette making machines

ROTHMANS OF PALL MALL9 citations72

US4459999AJul 17, 1984

Cigarette maker feeder

ROTHMANS OF PALL MALL19 citations72

US4222397ASep 16, 1980

Opening and moistening tobacco from bales

ROTHMANS OF PALL MALL7 citations70

US3980088ASep 14, 1976

Cigarette making machine

ROTHMANS OF PALL MALL7 citations66

US4369797AJan 25, 1983

Feed mechanism for tobacco cutting machines

ROTHMANS OF PALL MALL6 citations63

US4349037ASep 14, 1982

Tobacco moistening and opening apparatus

ROTHMANS OF PALL MALL3 citations63

US4307736ADec 29, 1981

Tobacco moistening and opening apparatus

ROTHMANS OF PALL MALL2 citations63

US4031903AJun 28, 1977

Winnowing of tobacco

ROTHMANS OF PALL MALL4 citations62

US4005717AFeb 1, 1977

Tobacco stream manufacture

ROTHMANS OF PALL MALL4 citations62

US3989052ANov 2, 1976

Tobacco filler rod production

ROTHMANS OF PALL MALL2 citations62

ROTHMANS BENSON & HEDGES

20 patents

US6371127B1Apr 16, 2002

Cigarette sidestream smoke and free-burn rate control device

ROTHMANS BENSON & HEDGES121 citations99

US7624739B2Dec 1, 2009

Tubular cigarette device comprising cerium oxide

ROTHMANS BENSON & HEDGES59 citations98

US6286516B1Sep 11, 2001

Cigarette sidestream smoke treatment material

ROTHMANS BENSON & HEDGES89 citations97

US6748955B2Jun 15, 2004

Cigarette sidestream smoke and free-burn rate control device

ROTHMANS BENSON & HEDGES47 citations96

US5524647AJun 11, 1996

Control of cigarette smoke chemistry

ROTHMANS BENSON & HEDGES33 citations93

US6722373B2Apr 20, 2004

Cigarette sidestream smoke treatment material

ROTHMANS BENSON & HEDGES16 citations92

US5190061AMar 2, 1993

Cigarette smoke filter

ROTHMANS BENSON & HEDGES49 citations89

US5105830AApr 21, 1992

Device and method for assembly of cigarettes

ROTHMANS BENSON & HEDGES26 citations87

US5826592AOct 27, 1998

Control of cigarette smoke chemistry

ROTHMANS BENSON & HEDGES6 citations74

US5509429AApr 23, 1996

Uniform tar delivery profile filter

ROTHMANS BENSON & HEDGES11 citations74

US5080112AJan 14, 1992

Controlled opening of fibrous materials

ROTHMANS BENSON & HEDGES7 citations73

US4867180ASep 19, 1989

Cigarette making machine hopper

ROTHMANS BENSON & HEDGES12 citations73

US5752528AMay 19, 1998

Cigarette extinguishing storage device

ROTHMANS BENSON & HEDGES5 citations70

US5377826AJan 3, 1995

Cigarette extinguishing storage device

ROTHMANS BENSON & HEDGES13 citations70

US5267578ADec 7, 1993

Controlled opening of fibrous materials

ROTHMANS BENSON & HEDGES5 citations62

US4967770ANov 6, 1990

Cigarette making machine hopper

ROTHMANS BENSON & HEDGES2 citations62

US4953570ASep 4, 1990

Cigarette making machine hopper

ROTHMANS BENSON & HEDGES3 citations62

US4896681AJan 30, 1990

Tobacco blend formation

ROTHMANS BENSON & HEDGES2 citations62

US5501332AMar 26, 1996

Cigarette extinguishing storage device

ROTHMANS BENSON & HEDGES3 citations59

US5379788AJan 10, 1995

Multiple-smoking cigarette system

ROTHMANS BENSON & HEDGES4 citations59

SK HAND TOOL CORP

1 patent

US4972853ANov 27, 1990

Cigarette filter rod elements and cigarettes incorporating such filter rod elements

SK HAND TOOL CORP28 citations89

CARLING O KEEFE LTD

1 patent

US3951049AApr 20, 1976

Method and apparatus for forming packaging structures

CARLING O KEEFE LTD21 citations68

ROTHS BENSON & HEDGES INC

1 patent

US6443161B1Sep 3, 2002

Make-your-own cigarette

ROTHS BENSON & HEDGES INC10 citations66

Showing the top 50 of 53 patents by PatentIndex Score.