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

Cengage Learning

Rank (All Time): #91,532 of 106,127Top 90%
10 inventors
5 Patents All Time

Top Inventors at Cengage Learning All Time

Showing 1–10 of 10 inventors

RankNamePatents
1 Charles Qian 2
1 James Chilton 2
1 Peter Griffiths 2
#4 Douglas Mealing 1
#4 Hildon Smith 1
#4 James Brei 1
#4 Jay Mehta 1
#4 Terrance T. Ford 1
#4 Thais Alencar 1
#4 Walter Michael Seiler, III 1