Dow Chemical Sued by Akzo on Paint-Making Process Patent

Dow Chemical Co., the biggest U.S. chemical company, was sued by a unit of Akzo Nobel NV, the world’s largest paintmaker, over a patent for a high-temperature coatings process.

Akzo, based in Amsterdam, contends Midland, Michigan-based Dow is wrongly using polymer extrusion technology patented in 2004, according to a complaint filed yesterday in federal court in Wilmington, Delaware.

Akzo deserves “damages, along with permanent injunctive relief” following a jury trial, for Dow’s patent infringement, the plaintiff’s lawyers said in court papers.

The lawsuit targets Dow Chemical’s so-called Bluewave Process used to make paint, and glass, paper and textile coatings, Akzo lawyers said in court papers.

Dow spokeswoman Nancy Lamb said the company hasn’t been served with the complaint and had no immediate comment on the lawsuit.

The case is Akzo Nobel Coatings Inc. v. Dow Chemical Co., 12-cv-1264, U.S. District Court, District of Delaware (Wilmington).

To see the patent in the lawsuit, click: 6,767,956.