Alliance Gas Systems, Inc
Alliance Gas Systems, Inc., of Chesterfield Twp., Mich., reports that it has been awarded U.S. Patent No. 6,579,489, dated June 17, 2003, for its water-assisted injection-molding process, called Hydrojection. The broad-coverage patent includes a multitude of methods for the injection and evacuation of water in the resin melt. It grants Alliance the only patented water injection molding process in the world, the company says.
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