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DuPont Targets Foreign Firms for Refrigerants Patent Infringement

10:53 AM MDT | August 1, 2007 | Chemical Week Editorial Staff

DuPont says it has taken legal action against local companies in four countries that it alleges have infringed on its patents for non-ozone-depleting, hydrofluorocarbon-based refrigerants. DuPont says the move is part of ongoing attempts to “gather evidence” on Chinese equipment manufacturers suspected of exporting air conditioners containing DuPont’s patented HFC-410A refrigerant to the European Union without proper licenses. DuPont says it recently reached a settlement with “a leading equipment manufacturer” in China, and has filed...

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