Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
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Contentguard Holdings — 138 Patents

Rank (All Time): #5,329 of 106,127Top 6%
45 inventors
138 Patents All Time

Top Inventors at Contentguard Holdings All Time

Showing 1–45 of 45 inventors

RankNamePatents
1 Mark J. Stefik 54
2 Xin Wang 48
3 Peter L. T. Pirolli 47
#4 Thanh Ta 42
#5 Michael Raley 41
#6 Guillermo Lao 39
#7 Bijan Tadayon 28
#8 Eddie Chen 22
#9 Charles Gilliam 17
#9 Aram Nahidipour 17
#11 Daniel Chen 16
#12 Hsi-Cheng Wu 13
#13 Thomas DeMartini 12
#14 Steve Okamoto 10
#15 Edgardo Valenzuela 9
#15 Mai Nguyen 9
#17 Glen W. Petrie 6
#17 Joseph Z. Fung 6
#17 Manuel Ham 6
#17 Nicholas Briggs 6
#21 Vincent Tieu 5
#22 Duc Tran 4
#22 Nancy Lynn Ishigo 4
#22 Russell Robert Lear 4
#25 C.V. Joshi 3
#25 Deepanjan Kanungo 3
#25 Ivy Y. Chen 3
#25 Karimireddy Hari Reddy 3
#25 M.S. Roopa 3
#25 Mark Berchowitz 3
#25 Prasad Ram 3
#25 Ralph H. Brenner 3
#25 Tushar N. Padhye 3
#25 Andrej Budo-Marek 3
#25 Anant Kansal 3
#25 Arun Ray 3
#37 Basavaraj B. H. 2
#37 Ralph C. Merkle 2
#39 Manual Ham 1
#39 Robert Chancellor 1
#39 Rory Jacobs 1
#39 Robert Schuler 1
#39 B. H. Basavaraj 1
#39 Thomas Soestini 1
#39 Arun Ramanujapuram 1