HJ

Henry K. Johnsen

NA Norsk Hydro Asa: 2 patents #96 of 584Top 20%
📍 Porsgrunn, NO: #65 of 184 inventorsTop 40%
Overall (All Time): #2,372,428 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4308116 Method and electrolyzer for production of magnesium Knut A. Andreassen, Oystein Boyum, Leiv B. Ognedal, Peder R. Solheim 1981-12-29
4198282 Replaceable cathode unit suitable as a module for building up of stable, non-deformable cathode systems in electrolyzers for the production of magnesium, and an electrolyzer with cathode units incorporated therein Knut A. Andreassen, Peder R. Solheim, Sigbjorn Kleveland 1980-04-15