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

Katsumi Kuboshima

Ricoh Company: 1 patents #6,936 of 9,818Top 75%
Overall (All Time): #3,683,718 of 4,157,543Top 90%
1 Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5750299 Method of forming colored image by use of inorganic toner, inorganic toner for developing latent electrostatic image, and colored toner image bearing image transfer medium Kouchi Ohshima, Shinichi Kuramoto, Hiromitsu Kawase, Yoichiro Watanabe, Takamichi Enomoto +2 more 1998-05-12