PATENT WATCH

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Alpha Innotech, of San Leandro, Calif., has received US Patent Number 6,271,042 for a light-based biochip detection system. The patent, "Biochip detection system," describes a charged coupled device (CCD) sensor that simultaneously detects light waves from different portions of the biochip. This CCD sensor is coupled with a filter, a broad spectrum light source, and a filter for the light source. The system is designed to be used to detect different fluorescent tags that have differing wavelengths of excitation.

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