IPC Subgroup
C08K 5/21 Urea; Derivatives thereof, e.g. biuret
Introduced: July 1974
Last revised: January 2006
Full Title
Use of organic ingredients > Nitrogen-containing compounds > Urea; Derivatives thereof, e.g. biuret
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- Subclass:
- USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS