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USPTO Patent Rankings Data through Sept 30, 2025
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Casio Phonemate — 18 Patents

Rank (All Time): #33,046 of 106,127Top 35%
11 inventors
18 Patents All Time

Top Inventors at Casio Phonemate All Time

Showing 1–11 of 11 inventors

RankNamePatents
1 Mark J. Karnowski 13
2 Stephen B. Knuth 7
3 Frank Sacca 4
#4 Sanford M. Brown, III 3
#5 Alex Nirshberg 2
#6 David A. Sharbaugh 1
#6 Grant M. Mason 1
#6 James W. Mazzolini 1
#6 Kenneth R. Core 1
#6 Catherine Tsang 1
#6 Brady Guillame 1