Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Chuo, JP ranks #8,825 worldwide for total patents filed all time, with 240 patents from 3 inventors. Leading employers of inventors based in Chuo, JP include Hitachi, Ricoh Company, Fujisawa Pharmaceutical Co..

Showing 1–3 of 3 inventors

Rank Inventor Primary Company Patents
1 Nobuyuki Yamamoto Hitachi 118
2 Hiroyuki Shimada Ricoh Company 108
3 Masaru Tsuboi Fujisawa Pharmaceutical Co. 14