Inventor · disambiguated record
Harold Heller
Also filed as: HELLER HAROLD · HELLER HAROLD L
18 granted patents·285 citations·filing 1973–1995
95Inventor score
Top patents by PatentIndex Score
18 records- 0182US4469502AIon exchanger fertilizers and a process for supplying plants with nutrients uniformly and over a long period of timeBAYER AG·Filed 1983·Granted Sep 4, 1984·26 cites·13 claims
- 0281US4402725AFertilizersBAYER AG·Filed 1981·Granted Sep 6, 1983·26 cites·22 claims
- 0378US3994719AResins for separating heavy metals consisting of thiourea-group-containing macroporous vinyl aromatic crosslinked matrixesBAYER AG·Filed 1974·Granted Nov 30, 1976·26 cites·16 claims
- 0475US4483716APoultice method for extracting hazardous spillsFRANKLIN INSTITUTE·Filed 1982·Granted Nov 20, 1984·30 cites·17 claims
- 0575US3961105AMethod for the manufacture of coated calcium sulfate whisker fibersCERTAIN TEED PROD CORP·Filed 1974·Granted Jun 1, 1976·32 cites·9 claims
- 0669US5441646AProcess of removing sulfate ions from water with a poly(meth)acrylamide exchange resinBAYER AG·Filed 1994·Granted Aug 15, 1995·23 cites·8 claims
- 0768US4396412AIon exchanger fertilizersBAYER AG·Filed 1981·Granted Aug 2, 1983·14 cites·15 claims
- 0867US5175193AProcess for the preparation of weakly acid cation exchange resinsBAYER AG·Filed 1991·Granted Dec 29, 1992·18 cites·6 claims
- 0967US4319015ASynthetic resins based on crosslinked copolymers of monovinyl and polyvinyl compoundsBAYER AG·Filed 1979·Granted Mar 9, 1982·12 cites·6 claims
- 1063US4077918AProcess for the preparation of anion exchangers by aminoalkylation of crosslinked aromatic polymer using sulphur trioxide catalystBAYER AG·Filed 1976·Granted Mar 7, 1978·11 cites·8 claims
- 1159US5414020AProcess for the preparation of anion exchange resins of the poly(meth)acrylamide typeBAYER AG·Filed 1993·Granted May 9, 1995·19 cites·5 claims
- 1253US4083712ANitrogenous fertilizer compositionsBAYER AG·Filed 1973·Granted Apr 11, 1978·6 cites·8 claims
- 1352US3980462AFertilizer for long term supply of plants with chelated micronutrientsBAYER AG·Filed 1976·Granted Sep 14, 1976·11 cites·5 claims
- 1445US4115261AProcess for treating drinking water and sewageBAYER AG·Filed 1976·Granted Sep 19, 1978·7 cites·15 claims
- 1544US4705637AProcess for reducing the wash water requirement of weakly basic anion exchangersBAYER AG·Filed 1985·Granted Nov 10, 1987·8 cites·5 claims
- 1644US4025705AInsoluble adsorber resin suitable for treating drinking water and sewageBAYER AG·Filed 1975·Granted May 24, 1977·8 cites·5 claims
- 1742US4988738AProcess for the preparation of bifunctional anion exchange resins, new bifunctional anion exchange resins and use thereofBAYER AG·Filed 1989·Granted Jan 29, 1991·7 cites·8 claims
- 1832US5612383AWeakly basic anion exchangers, processes for their preparation by aminolysis and their use for removing sulphate ions from aqueous liquidsBAYER AG·Filed 1995·Granted Mar 18, 1997·1 cites·3 claims
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