HF

Hellmut Fritzsche

ED Energy Conversion Devices: 2 patents #2 of 18Top 15%
📍 Chicago, IL: #38 of 426 inventorsTop 9%
🗺 Illinois: #421 of 4,656 inventorsTop 10%
Overall (1997): #38,921 of 185,788Top 25%
2
Patents 1997

Issued Patents 1997

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5596522 Homogeneous compositions of microcrystalline semiconductor material, semiconductor devices and directly overwritable memory elements fabricated therefrom, and arrays fabricated from the memory elements Stanford R. Ovshinsky, Stephen J. Hudgens, David Strand, Wolodymyr Czubatyj, Jesus Gonzalez-Hernandez +3 more 1997-01-21
5591501 Optical recording medium having a plurality of discrete phase change data recording points Stanford R. Ovshinsky 1997-01-07