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

Keiichi Ikeda — 32 Patents

Canon: 14 patents #4,747 of 19,416Top 25%
MCMitsui Chemicals: 7 patents #265 of 2,279Top 15%
Fujitsu Limited: 4 patents #7,093 of 24,456Top 30%
KCKinugawa Rubber Industrial Co.: 2 patents #7 of 42Top 20%
Johnson & Johnson: 1 patents #4,762 of 7,810Top 65%
MIMitsui Toatsu Chemicals, Incorporated: 1 patents #880 of 1,543Top 60%
OCOji Paper Co.: 1 patents #173 of 423Top 45%
Sumitomo Electric Industries: 1 patents #13,249 of 21,551Top 65%
Overall (All Time): #113,179 of 4,157,543Top 3%
32 Patents All Time

Issued Patents All Time

Showing 26–32 of 32 patents

Patent #TitleCo-InventorsDate
5357281 Image processing apparatus and terminal apparatus Hiroyuki Horii 1994-10-18
5274395 Thermal transfer recording apparatus switchable between sublimable and fusible ink sheets Yoshiyuki Mizoguchi, Yoshitaka Watanabe, Koichi Tanno, Ikumasa Ikeda, Hideaki Kawamura +3 more 1993-12-28
5209546 Structure for draining liquid for a vehicle and method for forming the structure Minekazu Hasegawa, Junichi Fujihira 1993-05-11
5107206 Printed circuit board inspection apparatus Kunio Yanagi 1992-04-21
5009464 Structure for draining liquid for a vehicle and method for forming the structure Minekazu Hasegawa, Junichi Fujihira 1991-04-23
4899171 Thermal printer Tokihiko Ogura, Yoshiyuki Mizoguchi, Tomishige Taguchi 1990-02-06
4808392 Process for producing silanes Masayoshi Itoh, Hiroharu Miyagawa, Masami Murakami, Tomohiro Abe, Kaoru Inoue 1989-02-28