Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Si Handling Systems — 49 Patents

Rank (All Time): #13,043 of 105,732Top 15%
38 inventors
49 Patents All Time

Patents per Year

Patents granted per year, 1980 to 2003Bar chart with a peak of 12 patents in 1982.peak 121980: 1 patents19801982: 12 patents1983: 7 patents19831984: 4 patents1985: 3 patents19851986: 10 patents1987: 3 patents19871988: 2 patents1989: 2 patents19891993: 1 patents1998: 1 patents19981999: 1 patents2001: 1 patents20012003: 1 patents2003

Top Inventors at Si Handling Systems All Time

Showing 1–38 of 38 inventors

RankNamePatents
1 Charles E. Jacoby 7
2 Peter Rohrbach 6
3 Per Lindquist 5
#4 Barry L. Ziegenfus 3
#4 Craig F. Sleep 3
#4 James L. Thatcher 3
#4 Katsuhiro Nagahori 3
#8 Barry Conklin 2
#8 David Clark 2
#8 James Werkheiser 2
#8 Kinjiro Tokunaga 2
#8 Per-Erik Lindqvist 2
#8 Phillip N. Ross 2
#8 Robert A. Hale 2
#8 Russell H. Scheel 2
#8 Stanley K. Gutekunst 2
#8 William L. Brown 2
#18 William Benzak 1
#18 John M. Sipos 1
#18 Allen Easterling 1
#18 Per E. Lindovist 1
#18 Bruce Nobel 1
#18 Brad J. Boyd 1
#18 Charles W. Schultz 1
#18 David Galloway 1
#18 Donald M. Berk 1
#18 Donald R. Grunwald 1
#18 Edmund L. Mangan 1
#18 Kazusuke Kaji 1
#18 Larry Reagan 1
#18 Michael S. Yautz 1
#18 Nikolai Eberhardt 1
#18 Richard Haring 1
#18 Robert Porter 1
#18 Roger A. Pyle 1
#18 Jeffry H. Wetherell 1
#18 Minoru Watatani 1
#18 John T. Hajcak, Jr. 1

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