Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
JS

John E. Stephan

CIChapman Instruments: 2 patents #1 of 13Top 8%
New York: #48,759 of 115,490 inventorsTop 45%
Overall (All Time): #2,162,000 of 4,157,543Top 55%
2 Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
7283256 Method and apparatus for measuring wafer thickness Thomas Bristow, Shu Wang 2007-10-16
6157450 Automated optical surface profile measurement system Silvio P. Marchese-Ragona, Robert Bryant, Matthew E. Seelig, Dag Lindquist, Donald P. McClimans +2 more 2000-12-05