Inventor

HELLER HAROLD

DE16 patents

Patents

16 patents

US5441646AAug 15, 1995

Process of removing sulfate ions from water with a poly(meth)acrylamide exchange resin

BAYER AG23 citations91

US4469502ASep 4, 1984

Ion exchanger fertilizers and a process for supplying plants with nutrients uniformly and over a long period of time

BAYER AG26 citations82

US4402725ASep 6, 1983

Fertilizers

BAYER AG26 citations81

US3994719ANov 30, 1976

Resins for separating heavy metals consisting of thiourea-group-containing macroporous vinyl aromatic crosslinked matrixes

BAYER AG26 citations81

US5414020AMay 9, 1995

Process for the preparation of anion exchange resins of the poly(meth)acrylamide type

BAYER AG19 citations73

US4705637ANov 10, 1987

Process for reducing the wash water requirement of weakly basic anion exchangers

BAYER AG8 citations73

US4319015AMar 9, 1982

Synthetic resins based on crosslinked copolymers of monovinyl and polyvinyl compounds

BAYER AG12 citations73

US4988738AJan 29, 1991

Process for the preparation of bifunctional anion exchange resins, new bifunctional anion exchange resins and use thereof

BAYER AG7 citations72

US4396412AAug 2, 1983

Ion exchanger fertilizers

BAYER AG14 citations72

US4115261ASep 19, 1978

Process for treating drinking water and sewage

BAYER AG7 citations72

US4077918AMar 7, 1978

Process for the preparation of anion exchangers by aminoalkylation of crosslinked aromatic polymer using sulphur trioxide catalyst

BAYER AG11 citations72

US4025705AMay 24, 1977

Insoluble adsorber resin suitable for treating drinking water and sewage

BAYER AG8 citations72

US5175193ADec 29, 1992

Process for the preparation of weakly acid cation exchange resins

BAYER AG18 citations71

US3980462ASep 14, 1976

Fertilizer for long term supply of plants with chelated micronutrients

BAYER AG11 citations71

US4083712AApr 11, 1978

Nitrogenous fertilizer compositions

BAYER AG6 citations60

US5612383AMar 18, 1997

Weakly basic anion exchangers, processes for their preparation by aminolysis and their use for removing sulphate ions from aqueous liquids

BAYER AG1 citations51