The European Patent Office has cancelled a patent (# 837087)...
The European Patent Office has cancelled a patent (# 837087) that was restricting Degussa's use of its Trogamid CX polyamide material to the manufacture of clear lenses, eyeglasses and magnifying glasses. The same material can now be used to make also eyeglass frames, sunglasses and lenses for sports glasses. Trogamid ...
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