Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
QU

Questech

Rank (All Time): #25,094 of 106,127Top 25%
25 inventors
24 Patents All Time

Top Inventors at Questech All Time

Showing 1–25 of 25 inventors

RankNamePatents
1 Robert Billing 9
2 Roger Questel 7
3 Nicholas Barton 6
#4 Douglas Croteau 4
#5 Barry Culkin 2
#5 David E. Palaith 2
#5 David Pelletier 2
#5 Dorian C. Guptill 2
#5 E. Laurence Libelo 2
#5 John M. Ryan 2
#5 Larry Wasowski 2
#5 Paul Thottathil 2
#5 Purushoth Kesavan 2
#5 Robert Harrington 2
#5 Satyabrata Mukherjee 2
#16 Brian M. Bargenquest 1
#16 Hugh K. Littlejohn 1
#16 James E. Taylor 1
#16 Leonard Samuel Baker 1
#16 Paul K. Burgess 1
#16 Robert Taylor 1
#16 Trevor Davies 1
#16 Donald W. Wilmot 1
#16 Antony Richard Jones 1
#16 Anthony Donald Stalley 1