.alpha., .omega.-polymethacrylate dicarboxylic acids, their synthesis and use as dicarboxylic acid components for the synthesis or modification of polyesters, polyurethanes or polyepoxides

Granted: Dec 2, 1997 Filed: Oct 18, 1995

This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.