Inventor · disambiguated record
Gero Heymer
Also filed as: HEYMER GERO · SCHLOSSER ERNST-GUNTHER · SCHROEDTER KLAUS
59 granted patents·519 citations·filing 1973–1989
98Inventor score
Files withHOECHST AG59
Top patents by PatentIndex Score
59 records- 0194US3943231AProcess for making condensed aluminum phosphatesHOECHST AG·Filed 1973·Granted Mar 9, 1976·54 cites·4 claims
- 0293US4294808AProduction of anticorrosive pigments containing phosphorusHOECHST AG·Filed 1979·Granted Oct 13, 1981·54 cites·8 claims
- 0390US4163760AContinuous production of organic phosphinesHOECHST AG·Filed 1978·Granted Aug 7, 1979·24 cites·12 claims
- 0489US4601887AApparatus for improving the degree of graphitization of carbon black, and its useHOECHST AG·Filed 1982·Granted Jul 22, 1986·43 cites·1 claims
- 0582US3978195AProcess for the production of substantially water-insoluble linear ammonium polyphosphatesHOECHST AG·Filed 1974·Granted Aug 31, 1976·23 cites·1 claims
- 0681US4639331AProcess for making pulverulent ammonium polyphosphates stable to hydrolysisHOECHST AG·Filed 1984·Granted Jan 27, 1987·41 cites·8 claims
- 0780US4452768AProcess for removing heavy metal ions from wet-processed phosphoric acidHOECHST AG·Filed 1983·Granted Jun 5, 1984·24 cites·8 claims
- 0877US4042324AProcess for inhibiting the corrosions and deposition of boiler scale in water-conveying systemsHOECHST AG·Filed 1976·Granted Aug 16, 1977·18 cites·2 claims
- 0974US4396586AProcess for making long-chain ammonium polyphosphateHOECHST AG·Filed 1981·Granted Aug 2, 1983·20 cites·7 claims
- 1066US4294621AProduction of an anticorrosive pigment on phosphate basisHOECHST AG·Filed 1980·Granted Oct 13, 1981·15 cites·8 claims
- 1165US4346065AProcess for the manufacture of finely dispersed sparingly soluble salts of oxyacids of phosphorusHOECHST AG·Filed 1981·Granted Aug 24, 1982·15 cites·7 claims
- 1263US4073810AProduction of organophosphinesHOECHST AG·Filed 1975·Granted Feb 14, 1978·5 cites·18 claims
- 1358US4200620ADecontamination of wet-processed phosphoric acidHOECHST AG·Filed 1977·Granted Apr 29, 1980·10 cites·16 claims
- 1457US4530769AProcess for separating carbon black from an aqueous suspensionHOECHST AG·Filed 1983·Granted Jul 23, 1985·9 cites·2 claims
- 1557US4466948AProcess for removing heavy metal ions and arsenic from wet-processed phosphoric acidHOECHST AG·Filed 1983·Granted Aug 21, 1984·7 cites·3 claims
- 1654US4596703AProcess for purifying wet-processed phosphoric acidHOECHST AG·Filed 1983·Granted Jun 24, 1986·11 cites·5 claims
- 1754US3931294AProduction of 2-phenyl-ethylene phosphonic acidHOECHST AG·Filed 1974·Granted Jan 6, 1976·3 cites·3 claims
- 1852US4134964AProcess and apparatus for purifying wet-processed phosphoric acidHOECHST AG·Filed 1977·Granted Jan 16, 1979·8 cites·9 claims
- 1947US4273752AProcess for making red phosphorusHOECHST AG·Filed 1980·Granted Jun 16, 1981·6 cites·6 claims
- 2046US4539192AProcess for removing fluorine and organic compounds from prepurified wet processed phosphoric acidHOECHST AG·Filed 1984·Granted Sep 3, 1985·6 cites·3 claims
- 2146US4222994ASolvent extraction purification of wet-processed phosphoric acidHOECHST AG·Filed 1977·Granted Sep 16, 1980·6 cites·10 claims
- 2246US3953581APurification of wet-processed phosphoric acid using anhydrous solventsHOECHST AG·Filed 1974·Granted Apr 27, 1976·6 cites·15 claims
- 2344US4134962AProduction of pure alkali metal phosphate solutions from wet-processed phosphoric acidsHOECHST AG·Filed 1977·Granted Jan 16, 1979·5 cites·5 claims
- 2443US4517163AProcess for making titanium dioxide concentratesHOECHST AG·Filed 1983·Granted May 14, 1985·5 cites·5 claims
- 2543US4279878AProcess for freeing phosphoric acid from organic contaminantsHOECHST AG·Filed 1980·Granted Jul 21, 1981·5 cites·8 claims
- 2643US4150058AProduction of alkyl phosphinesHOECHST AG·Filed 1978·Granted Apr 17, 1979·5 cites·11 claims
- 2742US4392962AProcess for separating metals from aqueous solutionsHOECHST AG·Filed 1981·Granted Jul 12, 1983·8 cites·9 claims
- 2842US3991164AProcess for the dearsenication of polyphosphoric acidHOECHST AG·Filed 1974·Granted Nov 9, 1976·5 cites·5 claims
- 2941US4678650AProcess for making an alkali phosphate solutionHOECHST AG·Filed 1985·Granted Jul 7, 1987·5 cites·3 claims
- 3040US4668492AProcess for dearsenifying phosphoric acid solutionsHOECHST AG·Filed 1985·Granted May 26, 1987·4 cites·10 claims
- 3140US4143121AContinuous production of pure phosphineHOECHST AG·Filed 1977·Granted Mar 6, 1979·4 cites·9 claims
- 3239US4923691AAluminum nitride powder and a process for the preparation thereofHOECHST AG·Filed 1989·Granted May 8, 1990·4 cites·21 claims
- 3339US4457848AProcess for after-treating extraction residues originating from the decontamination of phosphoric acidHOECHST AG·Filed 1982·Granted Jul 3, 1984·8 cites·5 claims
- 3439US4394358AProduction of granular alkali metal diphosphates or triphosphatesHOECHST AG·Filed 1981·Granted Jul 19, 1983·5 cites·9 claims
- 3539US4258022AContinuous production of phosphineHOECHST AG·Filed 1979·Granted Mar 24, 1981·4 cites·2 claims
- 3638US4525333AProcess for separating gallium and indium from aqueous solutionsHOECHST AG·Filed 1983·Granted Jun 25, 1985·3 cites·10 claims
- 3738US3956462AProcess utilizing waste material consisting substantially of phosphorous acidHOECHST AG·Filed 1974·Granted May 11, 1976·3 cites·14 claims
- 3837US4355010AProcess for removing phosphorus in vapor form and phosphanes from gas mixturesHOECHST AG·Filed 1980·Granted Oct 19, 1982·6 cites·4 claims
- 3937US4278647AProduction of phosphorous acidHOECHST AG·Filed 1979·Granted Jul 14, 1981·3 cites·8 claims
- 4036US4320108AProcess for the removal of metals from carbon blackHOECHST AG·Filed 1980·Granted Mar 16, 1982·2 cites·6 claims
- 4136US4156697AProduction of alkylphosphinesHOECHST AG·Filed 1977·Granted May 29, 1979·3 cites·10 claims
- 4235US4136155AProduction of phosphineHOECHST AG·Filed 1978·Granted Jan 23, 1979·2 cites·9 claims
- 4334US4330504AApparatus for making red phosphorusHOECHST AG·Filed 1981·Granted May 18, 1982·2 cites·4 claims
- 4434US4128620AProduction of phosphineHOECHST AG·Filed 1977·Granted Dec 5, 1978·2 cites·9 claims
- 4533US4705529AProcess for reducing the reactivity and improving the flow behavior of phosphorus pentoxideHOECHST AG·Filed 1986·Granted Nov 10, 1987·2 cites·5 claims
- 4633US4540558AProcess for removing organic contaminants from wet-processed phosphoric acidHOECHST AG·Filed 1984·Granted Sep 10, 1985·1 cites·4 claims
- 4732US4906445AContinuous process for complete removal or organic impurities from and complete decolorization of prepurified wet-process phosphoric acidHOECHST AG·Filed 1989·Granted Mar 6, 1990·2 cites·10 claims
- 4832US4482527AProcess for removing nitrogen dioxide from off-gasHOECHST AG·Filed 1983·Granted Nov 13, 1984·3 cites·5 claims
- 4932US4418043AProcess for separating metals from aqueous solutionsHOECHST AG·Filed 1981·Granted Nov 29, 1983·2 cites·6 claims
- 5032US4385041AProcess for making aqueous alkali metal phosphate solutionsHOECHST AG·Filed 1981·Granted May 24, 1983·2 cites·8 claims
Showing the top 50 of 59 patent records by PatentIndex Score.
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