JL

Jyrki Rainer Leppanen

Google: 2 patents #10,498 of 22,993Top 50%
Overall (All Time): #2,262,999 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
5789092 Method and equipment for prevention of cooling of electrochemical devices David Spiers 1998-08-04
5665211 Electrolysis apparatus for producing hydrogen Jukka-Pekka Nieminen 1997-09-09