Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Process for the dyeing of leather with anionic dyes and polyaminoamide resin as dyeing auxiliary

Process for the dyeing of leather with anionic dyes and polyaminoamide resin as dyeing auxiliary

US Patent 5074884 · Granted Dec 24, 1991

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Substrates secure against unauthorized copying and their production2001
Biologically degradable leather2001
Disazo dyes2001
Process for imparting wet strength to paper2000
Paper finishing aid2000
Disazo dyestuffs for dyeing cellulosic materials2000
Process for the manufacture of allophanates having isocyanate groups1999
Biodegradable and compostable shaped bodies1999
Process for preparing low-salt preparations of condensation products1999
Use of polyaspartic acid amides as leather auxiliary products1999
Process for dyeing cellulosic materials with disazo dyestuffs1999
Process for producing structurally resistant paper1998