Inventor · disambiguated record
Carl D. Frohning
Also filed as: FROHNING CARL · FROHNING CARL D · FROHNING CARL DIETER
28 granted patents·1 pending application·377 citations·filing 1979–2006
96Inventor score
Files withHOECHST AG11RUHRCHEMIE AG7CELANESE CHEM EUROPE GMBH5CELANESE GMBH4CELANESE CHEMICALS EUROP1
Top patents by PatentIndex Score
29 records- 0194US5155084ASupported catalysts and a process for their preparationHOECHST AG·Filed 1991·Granted Oct 13, 1992·111 cites·24 claims
- 0294US4956328AProcess for the preparation of catalyst compositions containing nickel, alumina, and zirconium dioxide and catalysts made therefromHOECHST AG·Filed 1989·Granted Sep 11, 1990·47 cites·70 claims
- 0386US5684215AOne stage process for the preparation of alcoholsHOECHST AG·Filed 1992·Granted Nov 4, 1997·26 cites·22 claims
- 0479US4423156AProcess for preparing unsaturated hydrocarbonsRUHRCHEMIE AG·Filed 1983·Granted Dec 27, 1983·15 cites·9 claims
- 0574US6700021B2Preparation of aldehydesCELANESE CHEM EUROPE GMBH·Filed 2002·Granted Mar 2, 2004·12 cites·11 claims
- 0673US6864387B2Process for preparing sulfonated arylphosphinesCELANESE CHEM EUROPE GMBH·Filed 2003·Granted Mar 8, 2005·9 cites·11 claims
- 0772US5302569ACopper/zinc oxide/aluminum oxide-containing catalystsHOECHST AG·Filed 1992·Granted Apr 12, 1994·32 cites·24 claims
- 0872US4455395AProcess for the production of unsaturated hydro-carbonsRUHRCHEMIE AG·Filed 1982·Granted Jun 19, 1984·11 cites·7 claims
- 0971US4472526AProcess for producing ethanol and n-propanol from methanol and synthesis gasRUHRCHEMIE AG·Filed 1982·Granted Sep 18, 1984·8 cites·7 claims
- 1070US6610881B1Method for producing sulfonated aryl phosphinesCELANESE CHEMICALS EUROP·Filed 2000·Granted Aug 26, 2003·10 cites·11 claims
- 1168US5600030AHydrogenation catalyst, a process for its preparation and use thereofHOECHST AG·Filed 1995·Granted Feb 4, 1997·11 cites·2 claims
- 1268US5498587AHydrogenation catalyst, a process for its preparation, and use thereofHOECHST AG·Filed 1994·Granted Mar 12, 1996·25 cites·11 claims
- 1368US4564642AProcess for the manufacture of unsaturated hydrocarbonsRUHRCHEMIE AG·Filed 1981·Granted Jan 14, 1986·9 cites·9 claims
- 1467US7259279B2Process for preparing aldehydesOXEA GMBH·Filed 2005·Granted Aug 21, 2007·2 cites·14 claims
- 1565US6096931AProcess for preparing alcoholsCELANESE GMBH·Filed 1998·Granted Aug 1, 2000·10 cites·13 claims
- 1655US4424383AProcess for producing ethanol and n-propanol from methanolRUHRCHEMIE AG·Filed 1981·Granted Jan 3, 1984·11 cites·13 claims
- 1755US2006276669A1Process for preparing sulfonated arylphosphinesCELANESE CHEM EUROPE GMBH·Filed 2006·Application pending·0 cites
- 1850US7102034B2Process for preparing sulfonated arylphosphinesCELANESE CHEM EUROPE GMBH·Filed 2004·Granted Sep 5, 2006·0 cites·1 claims
- 1945US5475161AProcess for the preparation of alcohols in two stagesHOECHST AG·Filed 1992·Granted Dec 12, 1995·3 cites·20 claims
- 2041US4337363AProcess for the preparation of 3-(4-methyl-3-cyclohexen-1-yl) butyraldehydeRUHRCHEMIE AG·Filed 1979·Granted Jun 29, 1982·1 cites·9 claims
- 2138US6358419B1Process for the purification of wastewater from the aldolization reactionHOECHST AG·Filed 1996·Granted Mar 19, 2002·10 cites·10 claims
- 2238US4355192AProcess for the production of ethanol and n-propanol from methanolRUHRCHEMIE AG·Filed 1981·Granted Oct 19, 1982·4 cites·10 claims
- 2337US6211414B1Process for preparing aldehydes by hydroformylationCELANESE GMBH·Filed 1997·Granted Apr 3, 2001·1 cites·37 claims
- 2435US5663445AProcess for the preparation of alcohols or aminesHOECHST AG·Filed 1995·Granted Sep 2, 1997·3 cites·14 claims
- 2534US6274774B1Process for preparing aldehydes in the presence of an aqueous phase containing rhodium and sulphonated triarylphosphines as catalystCELANESE GMBH·Filed 1997·Granted Aug 14, 2001·3 cites·38 claims
- 2631US6191063B1Catalyst and process for the production of aldehydes by hydroformylation of olefinically unsaturated compoundsCELANESE GMBH·Filed 1997·Granted Feb 20, 2001·1 cites·14 claims
- 2731US5550297AProcess for the preparation of alcohols or aminesHOECHST AG·Filed 1995·Granted Aug 27, 1996·1 cites·16 claims
- 2830US6160180ATertiary phosphanes containing alkylene glycol groupsCELANESE CHEM EUROPE GMBH·Filed 1997·Granted Dec 12, 2000·0 cites·11 claims
- 2929US5410072AMixtures of isomeric pentanoic acids, esters prepared therefrom, and their use as lubricantsHOECHST AG·Filed 1994·Granted Apr 25, 1995·1 cites·20 claims
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