SJ

Sheryl L. Johnson

TA Tandy: 2 patents #26 of 92Top 30%
📍 Sunnyvale, CA: #7,978 of 14,302 inventorsTop 60%
🗺 California: #185,134 of 386,348 inventorsTop 50%
Overall (All Time): #2,307,230 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5144613 Thermal bulk erasure method for dye polymer optical media Bryan Clark 1992-09-01
5090008 Erasable recording media Bryan Clark, Robert Guerra 1992-02-18