Inventor
SAWADA SEIGO
JP26 patents
⚠️ This page may combine multiple inventors who share the name “SAWADA SEIGO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
YAKULT HONSHA KK
18 patentsUS4473692ASep 25, 1984
Camptothecin derivatives and process for preparing same
YAKULT HONSHA KK185 citations98
US4604463AAug 5, 1986
Camptothecin derivatives and process for preparing same
YAKULT HONSHA KK252 citations97
US4545880AOct 8, 1985
Photochemical process for preparing camptothecin derivatives
YAKULT HONSHA KK110 citations96
US4399276AAug 16, 1983
7-Substituted camptothecin derivatives
YAKULT HONSHA KK63 citations96
US7126000B2Oct 24, 2006
Method of synthesizing camptothecin-relating compounds
YAKULT HONSHA KK66 citations95
US4399282AAug 16, 1983
Camptothecin derivatives
YAKULT HONSHA KK99 citations95
US4914205AApr 3, 1990
Camptothecin derivatives
YAKULT HONSHA KK65 citations94
US6025385AFeb 15, 2000
Taxane derivatives and drugs containing the same
YAKULT HONSHA KK34 citations92
US5061800AOct 29, 1991
Camptothecin derivatives
YAKULT HONSHA KK49 citations92
US4513138AApr 23, 1985
Camptothecin-1-oxide derivatives
YAKULT HONSHA KK47 citations92
US6136808AOct 24, 2000
Taxane derivatives
YAKULT HONSHA KK18 citations83
US6268381B1Jul 31, 2001
Taxane derivatives
YAKULT HONSHA KK14 citations73
US6310210B1Oct 30, 2001
Camptothecin derivatives
YAKULT HONSHA KK9 citations72
US5843954ADec 1, 1998
Camptothecin derivatives, preparations thereof and antitumor agents
YAKULT HONSHA KK9 citations72
US7488825B2Feb 10, 2009
Method for preparing polymorphism of irinotecan hydrochloride
YAKULT HONSHA KK2 citations62
US6743918B2Jun 1, 2004
Process for producing camptothecin
YAKULT HONSHA KK6 citations62
US7378555B2May 27, 2008
Method of synthesizing camptothecin-relating compounds
YAKULT HONSHA KK0 citations50
US7897772B2Mar 1, 2011
Acid addition salt of irinotecan
YAKULT HONSHA KK0 citations46