Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Process for the preparation of cationic hydrazone dyestuffs

Process for the preparation of cationic hydrazone dyestuffs

US Patent 4424349 · Granted Jan 3, 1984

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Alkanolammonium-containing triazinyl flavonate whiteners2009
Use of brighteners for the preparation of coating slips2007
Preparations of solids containing graft copolymers2002
Process for the preparation of cationic dyestuffs1982
Process for the preparation of pyridine-4-aldehyde phenylhydrazones1982