Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Substituted 1H,12H-benz-[DE]pyrano[3',4':6,7] indolizino[1,2-B]quinoline-10,13(9H,15H)-dione compound

Substituted 1H,12H-benz-[DE]pyrano[3',4':6,7] indolizino[1,2-B]quinoline-10,13(9H,15H)-dione compound

US Patent 5658920 · Granted Aug 19, 1997

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Printing control device, printing apparatus, control method of printing control 2019
Dispiropyrrolidine derivatives2014
Imidazothiazole derivatives having proline ring structure2013
Pyrazolopyrimidine derivative2012
Diamine derivatives2009
Diamine derivatives2008
Method for improving pin compatibility in microcomputer emulation equipment2004
Pentacyclic taxan compound2004
Pentacyclic Compound2003
Pyrazole derivatives and salts thereof2003
Pyrazole derivatives and salts thereof2003
Pyrazole derivatives2003