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Sumitomo Sues Furukawa over Laser Patent

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WILMINGTON, Del., Feb 15 -- Sumitomo Electric Industries Ltd. is suing Furukawa Electric Co Ltd., for selling a product that Sumitomo alleges infringes its patent. In papers filed in the US District Court in Delaware, Sumitomo alleged that Furukawa's Rainbow Pump for increasing the data-carrying capacity of communications networks infringes Sumitomo's 1998 patent for a "Semiconductor laser module and optical fiber amplifier."     Last year Furukawa said in a letter to Sumitomo that it considered the Sumitomo patent to be invalid, court papers say. Meetings between the two companies since then...Read full article

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    Published: February 2001
    CommunicationsNews & Featuressemiconductor lasersLasers

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