Inventor
SEIFERT PETER
US48 patents
⚠️ This page may combine multiple inventors who share the name “SEIFERT PETER”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
BLACK CLAWSON CO
25 patentsUS5262003ANov 16, 1993
Method and system for defibering paper making materials
BLACK CLAWSON CO44 citations93
US4155841AMay 22, 1979
High turbulence screen
BLACK CLAWSON CO31 citations93
US5234172AAug 10, 1993
High pressure water jet comminuting
BLACK CLAWSON CO24 citations92
US4722793AFeb 2, 1988
Apparatus and method for thickening pulp and paper stock
BLACK CLAWSON CO29 citations91
US4410424AOct 18, 1983
Screening apparatus for paper making stock
BLACK CLAWSON CO24 citations82
US5582686ADec 10, 1996
High pressure water jet comminuting
BLACK CLAWSON CO17 citations81
US4081147AMar 28, 1978
Reversible disk refiner plates
BLACK CLAWSON CO29 citations78
US5382327AJan 17, 1995
Apparatus for thickening pulp and paper stock
BLACK CLAWSON CO14 citations74
US5189775AMar 2, 1993
Zone controlled deflection compensated roll
BLACK CLAWSON CO10 citations74
US5186791AFeb 16, 1993
Apparatus for thickening pulp and paper stock
BLACK CLAWSON CO10 citations74
US5122229AJun 16, 1992
Apparatus and method for washing cellulosic pulp
BLACK CLAWSON CO10 citations74
US4383918AMay 17, 1983
High turbulence screen
BLACK CLAWSON CO17 citations74
US4328096AMay 4, 1982
Dual flow screening apparatus
BLACK CLAWSON CO16 citations74
US4099458AJul 11, 1978
Cone press
BLACK CLAWSON CO12 citations74
US3970548AJul 20, 1976
Apparatus for screening paper fiber stock
BLACK CLAWSON CO14 citations74
US3960332AJun 1, 1976
Defibering apparatus for paper making stock
BLACK CLAWSON CO9 citations74
US3948165AApr 6, 1976
Cone press
BLACK CLAWSON CO10 citations74
US5221437AJun 22, 1993
Screening apparatus for paper making stock
BLACK CLAWSON CO12 citations72
US5078275AJan 7, 1992
Screening apparatus for paper making stock
BLACK CLAWSON CO8 citations72
US4155839AMay 22, 1979
Reverse centrifugal cleaning of paper making stock
BLACK CLAWSON CO17 citations72
US4171101AOct 16, 1979
Method of operating a disk refiner provided with reversible refining plates
BLACK CLAWSON CO17 citations69
US5762756AJun 9, 1998
Methods and apparatus for pulping and deinking
BLACK CLAWSON CO8 citations66
US4106980AAug 15, 1978
Thickener apparatus including a shaftless cylinder mold
BLACK CLAWSON CO10 citations66
US5591336AJan 7, 1997
Apparatus for dewatering and or washing papermaking stock
BLACK CLAWSON CO4 citations62
US5367894ANov 29, 1994
Apparatus and method for washing cellulosic pulp
BLACK CLAWSON CO6 citations61
BAYER AG
11 patentsUS6734217B1May 11, 2004
Flame resistant HR cold-moulded foam with a reduced fume density and toxicity
BAYER AG15 citations82
US4427798AJan 24, 1984
Solutions of oligo-urethane ethers in polyether polyols and their use in a process for the production of polyurethane foams
BAYER AG19 citations82
US4323657AApr 6, 1982
Dispersions of high melting polyesters in polyhydroxyl compounds, a process for their preparation and their use in the production of polyurethanes
BAYER AG20 citations79
US4668734AMay 26, 1987
Stable dispersions of polyureas and/or polyhydrazo-dicarbonamides in relatively high molecular weight hydroxyl-group containing materials, a process for the production thereof and the use thereof for the production of polyurethane plastics
BAYER AG12 citations74
US4430453AFeb 7, 1984
Polyurethane foams suitable for high frequency welding and process for producing the same
BAYER AG7 citations74
US4371630AFeb 1, 1983
Solution of a polyurethane in a polyol and a process for using such a solution in the production of polyurethane plastics
BAYER AG8 citations74
US6590007B2Jul 8, 2003
Flame-resistant hr cold-moulded foam with reduced fume density and toxicity
BAYER AG11 citations72
US4400331AAug 23, 1983
Dialkoxy-phosphonyl-N-alkyl-formic acid amides
BAYER AG2 citations63
US4328321AMay 4, 1982
Dialkoxy-phosphonyl-N-alkyl-formic acid amides and their use as additives for the production of polyurethane foams which are capable of being flame laminated and high frequency welded
BAYER AG4 citations63
US4306037ADec 15, 1981
Process for the manufacture of elastic polyurethane foams capable of being flame laminated and high frequency welded
BAYER AG6 citations63
US6989406B1Jan 24, 2006
Polyurea polyrethanes having improved physical properties
BAYER AG6 citations60
DAIMLER BENZ AG
3 patentsUS5236219AAug 17, 1993
Vertically adjustable roll bar for a motor vehicle
DAIMLER BENZ AG54 citations96
US5224735AJul 6, 1993
Motor vehicle rollover protection device
DAIMLER BENZ AG24 citations92
US5803421ASep 8, 1998
Cup holder with a housing integrated into a center console of a passenger car
DAIMLER BENZ AG7 citations74