Inventor · disambiguated record
Holger Krohn
Also filed as: KROHN HOLGER
4 granted patents·109 citations·filing 1976–1996
78Inventor score
Top patents by PatentIndex Score
4 records- 0166US4146827AFour-quadrant current-regulated energization of d.c. motor using pulse-width modulationINDRAMAT GES FUR IND RATIONLIS·Filed 1977·Granted Mar 27, 1979·19 cites·7 claims
- 0251US6332462B1Method and device for producing respiratory air which is harmless to health in positive pressure nasal breathing apparatusFiled 1996·Granted Dec 25, 2001·77 cites·11 claims
- 0339US4988418AMethod of electrically measuring the concentration of acidsHAGEN BATTERIE AG·Filed 1989·Granted Jan 29, 1991·8 cites·20 claims
- 0436US4064446ADuplicating method and arrangementINDRAMAT GMBH·Filed 1976·Granted Dec 20, 1977·5 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →