Inventor
LEDJEFF KONSTANTIN
DE18 patents
⚠️ This page may combine multiple inventors who share the name “LEDJEFF KONSTANTIN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FRAUNHOFER GES FORSCHUNG
10 patentsUS5925477AJul 20, 1999
Assembly of single cells to form a diaphragm electrode unit
FRAUNHOFER GES FORSCHUNG99 citations97
US5863672AJan 26, 1999
Polymer electrolyte membrane fuel cell
FRAUNHOFER GES FORSCHUNG99 citations97
US5861221AJan 19, 1999
Battery shaped as a membrane strip containing several cells
FRAUNHOFER GES FORSCHUNG128 citations97
US5952118ASep 14, 1999
PEM fuel cell with structured plates
FRAUNHOFER GES FORSCHUNG79 citations96
US5810577ASep 22, 1998
Catalytic burner
FRAUNHOFER GES FORSCHUNG42 citations92
US5733678AMar 31, 1998
Polymer fuel cell
FRAUNHOFER GES FORSCHUNG38 citations92
US5316643AMay 31, 1994
Apparatus for the storage and conversion of energy
FRAUNHOFER GES FORSCHUNG55 citations91
US5723086AMar 3, 1998
Electrode membrane
FRAUNHOFER GES FORSCHUNG51 citations90
US5464006ANov 7, 1995
Water heater
FRAUNHOFER GES FORSCHUNG21 citations90
US5709174AJan 20, 1998
Hot water heater
FRAUNHOFER GES FORSCHUNG18 citations83
HOECHST AG
4 patentsUS5561202AOct 1, 1996
Polymer electrolyte membrane, and process for the production thereof
HOECHST AG106 citations98
US5438082AAug 1, 1995
Polymer electrolyte membrane, and process for the production thereof
HOECHST AG199 citations98
US6214488B1Apr 10, 2001
Polymer electrolyte membrane and process for the production thereof
HOECHST AG55 citations96
US5741408AApr 21, 1998
Polymer electrolyte membrane for use in fuel cells and electrolysis cells
HOECHST AG80 citations96