Inventor · disambiguated record
Norbert Lonhoff
Also filed as: LOENHOFF NORBERT
13 granted patents·97 citations·filing 1989–1996
91Inventor score
Files withBAYER AG13
Top patents by PatentIndex Score
13 records- 0171US5127999AProcess for the preparation of alkali metal dichromates and chromic acid by electrolysisBAYER AG·Filed 1991·Granted Jul 7, 1992·22 cites·3 claims
- 0270US5128000ADimensionally stable anodes and their use in the preparation of alkali metal dichromates and chromic acidBAYER AG·Filed 1991·Granted Jul 7, 1992·19 cites·7 claims
- 0359US5250274AProcess for the production of sodium dichromateBAYER AG·Filed 1992·Granted Oct 5, 1993·14 cites·3 claims
- 0457US5181994AProcess for the preparation of chromic acidBAYER AG·Filed 1990·Granted Jan 26, 1993·11 cites·6 claims
- 0551US5273735AProcess for the preparation of sodium dichromateBAYER AG·Filed 1992·Granted Dec 28, 1993·9 cites·7 claims
- 0643US5068015AElectrochemical process for the production of chromic acidBAYER AG·Filed 1989·Granted Nov 26, 1991·5 cites·10 claims
- 0743US4981573AProcess for the production of alkali dichromates and chromic acid employing an anode of valve metal activated by electrodepositing noble metals from meltsBAYER AG·Filed 1989·Granted Jan 1, 1991·4 cites·2 claims
- 0840US5096548AProcess for the preparation of chromic acidBAYER AG·Filed 1990·Granted Mar 17, 1992·4 cites·5 claims
- 0936US5667759AMethod for manufacturing alkali chromates from chromium oreBAYER AG·Filed 1996·Granted Sep 16, 1997·4 cites·1 claims
- 1033US5051155AProcesses for the preparation of alkali metal dichromates and chromic acidBAYER AG·Filed 1990·Granted Sep 24, 1991·2 cites·2 claims
- 1132US5094729AProcesses for the preparation of alkali metal dichromates and chromic acidBAYER AG·Filed 1991·Granted Mar 10, 1992·2 cites·5 claims
- 1229US5071522AProcess for the preparation of chromic acidBAYER AG·Filed 1991·Granted Dec 10, 1991·1 cites·4 claims
- 1328US5505918AMethod for manufacturing alkali chromates from chromium oreBAYER AG·Filed 1994·Granted Apr 9, 1996·0 cites·9 claims
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