Synthetic Resin Containing Patents (Class 156/327)
- With polymerization completion, i.e., curing, after assembly (Class 156/331.1)
- N only in unlinked side-chain or side-ring; e.g., polyvinyl, pyridine, etc. (Class 156/331.6)
- Derived from iso- or thio-cyanate; e.g., polyurethane, etc. (Class 156/331.7)
- Derived from acyclic compound containing N (Class 156/331.8)