DETROIT - Epcon Gas Systems Inc. is appealing a ruling in a 2-year-old patent dispute over a gas-assist injection molding process.
The Troy, Mich.-based company had brought the suit against Bauer Compressors Inc. in December 1998. U.S. District Judge Arthur Tarnow in Detroit recently ruled in favor of Norfolk, Va.-based Bauer.
Epcon President Jon Erikson said Epcon has appealed to the U.S. Court of Appeals for the District of Columbia. Erikson expects a ruling later this year.
The case involves pressure profiling, or stepping gas pressure up and down during injection molding.