Company News, Patents

LG Household Patents Tooth-Whitening Patch

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By: TOM BRANNA

Editor

Patent No. US 6,780,401 B2: LG Household & Healthcare Ltd., Seoul, Korea, patented a dry matrix patch to adhere to and whiten teeth when wet. It contains a peroxide-compatible hydrophilic glass polymer base and a peroxide tooth-whitening agent....

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