Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Four Pi Systems — 6 Patents

Rank (All Time): #87,664 of 105,732Top 85%
9 inventors
6 Patents All Time

Patents per Year

Patents granted per year, 1990 to 1994Bar chart with a peak of 2 patents in 1992.peak 21990: 1 patents19901992: 2 patents19921993: 2 patents19931994: 1 patents1994

Top Inventors at Four Pi Systems All Time

Showing 1–9 of 9 inventors

RankNamePatents
1 Bruce D. Baker 6
1 John A. Adams 6
1 Robert L. Corey 6
#4 Edward W. Ross 5
#5 Brian L. Ganz 1
#5 Christopher Sexton 1
#5 David C. Reynolds 1
#5 Gerald S. Russell 1
#5 Kerry L. Brown 1