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Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
QI

Quesant Instrument — 5 Patents

Rank (All Time): #101,378 of 105,732Top 100%
2 inventors
5 Patents All Time

Patents per Year

Patents granted per year, 1994 to 2001Bar chart with a peak of 2 patents in 1995.peak 21994: 1 patents19941995: 2 patents19951997: 1 patents19972001: 1 patents2001

Top Inventors at Quesant Instrument All Time

Showing 1–2 of 2 inventors

RankNamePatents
1 David J. Ray 5
2 Robert S. Harp 4