Carboxylic Acid Esters Patents (Class 560/1)
- Sulfur in acid moiety (Class 560/9)
- Nitrogen in acid moiety other than as nitroso or isocyanate (e.g., amino acid esters, etc.) (Class 560/19)
- Aldehyde or ketone group in acid moiety (Class 560/51)
- Oxy in acid moiety (Class 560/55)
- Polycarboxylic acid (Class 560/76)
- Naphthyl in acid moiety (Class 560/100)
- Plural rings bonded directly to the same carbon in acid moiety (Class 560/101)
- Rings bonded directly to each other in acid moiety (Class 560/102)
- Monocyclic acid moiety (Class 560/103)
- Esterified phenolic hydroxy (Class 560/130)
- Sulfur in acid moiety (Class 560/147)
- Nitrogen in acid moiety other than as nitroso or isocyanate (e.g., amino acid esters, etc.) (Class 560/155)
- Aldehyde or ketone group in acid moiety (Class 560/174)
- Oxy in acid moiety (Class 560/179)
- Polycarboxylic acid (Class 560/190)
- Unsaturation in acid moiety (Class 560/205)
- Halogen in acid moiety (Class 560/226)
- Unsubstituted acids of the acetic series (Class 560/231)