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

Koji Kifune — 9 Patents

UNUnitika: 8 patents #19 of 620Top 4%
UNUnitaka: 1 patents #1 of 14Top 8%
Nara, JP: #505 of 2,795 inventorsTop 20%
Overall (All Time): #591,551 of 4,157,543Top 15%
9 Patents All Time

Issued Patents All Time

Showing 1–9 of 9 patents

Patent #TitleCo-InventorsDate
5290752 Method for preparation of a shaped chitin body containing a physiologically active substance Kenzo Motosugi, Hiroyuki Tanae 1994-03-01
5204107 Slow-releasing composition of platinum-containing anticancer agent Ryoichi Tsurutani, Yuriko Nakamura 1993-04-20
4932404 Chitin fibers and process for the production of the same Katsuhiro Inoue, Shigeru Mori 1990-06-12
4704268 Method for manufacture of biodegradable drug donor and drug donor made thereby 1987-11-03
4699135 Shaped chitin body Kenzo Motosugi, Yasuhiko Yamaguchi, Yasuo Nobe, Hiroyuki Tanae 1987-10-13
4651725 Wound dressing Yasuhiko Yamaguchi, Hiroyuki Tanae 1987-03-24
4575519 Porous chitin shaped article and production thereof Hiroyuki Tanae, Yasuhiko Yamaguchi, Kenzo Motosugi 1986-03-11
4445885 Insulin releasing supplier 1984-05-01
4431601 Process for the production of chitin fibers Katsuhiro Inoue, Shigeru Mori 1984-02-14