Quaternary Ammonium Containing Patents (Class 564/281)
- Two rings bonded directly to the same carbon (Class 564/283)
- Nitro or nitroso, bonded directly to carbon containing (Class 564/284)
- Hydroxy, bonded directly to carbon, or ether containing (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal) (Class 564/285)
- Acyclic carbon to carbon unsaturation containing (Class 564/288)
- Halogen attached indirectly to the ammonium nitrogen by nonionic bonding (Class 564/289)
- Polyquaternary ammonium (Class 564/290)