Inventor · disambiguated record
Klaus Frankenfeld
Also filed as: FRANKENFELD KLAUS
9 granted patents·58 citations·filing 1975–1993
87Inventor score
Top patents by PatentIndex Score
9 records- 0167US4018869AProcess for the extractive purification of phosphoric acid containing cationic impuritiesBUDENHEIM RUD A OETKER CHEMIE·Filed 1975·Granted Apr 19, 1977·16 cites·5 claims
- 0257US4117092AProcess for separating a phosphoric acid-solvent solutionCHEMISHE FABRIK BUDENHEIM·Filed 1977·Granted Sep 26, 1978·12 cites·12 claims
- 0346US5607990AMethod for making phenol-formaldehyde resins flame-resistantBUDENHEIM RUD A OETKER CHEMIE·Filed 1992·Granted Mar 4, 1997·6 cites·16 claims
- 0441US5539141AMixed boric acid/phosphoric acid esters of polyols, their preparation and useBUDENHEIM RUD A OETKER CHEMIE·Filed 1993·Granted Jul 23, 1996·7 cites·27 claims
- 0539US4492680ARemoval of cadmium from acidic phosphatic solutionsBUDENHEIM RUD A OETKER CHEMIE·Filed 1983·Granted Jan 8, 1985·6 cites·20 claims
- 0635US4383978AProcess of obtaining uranium and uranium compounds from phosphoric acidBUDENHEIM RUD A OETKER CHEMIE·Filed 1980·Granted May 17, 1983·4 cites·12 claims
- 0730US4762692AProcess for the precipitation and separation of cadmium sulphide from the raffinates derived from phosphoric acid purificationBUDENHEIM RUD A OETKER CHEMIE·Filed 1987·Granted Aug 9, 1988·2 cites·13 claims
- 0829US4385036AProcess of obtaining uranium and uranium compounds from phosphoric acidBUDENHEIM RUD A OETKER CHEMIE·Filed 1980·Granted May 24, 1983·2 cites·11 claims
- 0927US5068094AProcess for the removal of cadmium ions from phosphoric acid resulting from a wet processBUDENHEIM RUD A OETKER CHEMIE·Filed 1990·Granted Nov 26, 1991·3 cites·62 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →