Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Process for mass-dyeing of thermoplastics: polystyrene and styrene copolymers with indoline methine dyes

Process for mass-dyeing of thermoplastics: polystyrene and styrene copolymers with indoline methine dyes

US Patent 4447244 · Granted May 8, 1984

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Process for retanning mineral tanned leathers with aromatic sulphonic acids1994
Process for producing chrome leather1994
High-extraction chrome tanning process1990
Process for the retanning of chrome leathers1989
1,4-Bis-(4-chloro-2-methoxystyryl)-benzene1984
Benzofurane benzoxazoles1981
Benzofuranyl-benzimidazoles1981
Process for the preparation of benzimidazolylbenzofuranes1981
Pyrazoline compounds1981