Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Robert C. Stephenson — 2 Patents

SMSolid State Measurements: 2 patents #4 of 19Top 25%
Irwin, PA: #98 of 245 inventorsTop 40%
Pennsylvania: #30,766 of 74,527 inventorsTop 45%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
Robert C. Stephenson has been granted 2 US patents while listed as an inventor at Solid State Measurements. The first was granted in 1991 and the most recent in April 2000. Robert C. Stephenson ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Robert C. Stephenson in Irwin, PA, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6052653 Spreading resistance profiling system Robert Mazur, Mark J. Andy, Catherine L. Hartford, John R. Rogers 2000-04-18
5036271 Apparatus for characterization of electrical properties of a semiconductor body Robert Mazur, Donald A. Zier, Jr. 1991-07-30