Patents

Tooth Whitening Product

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By: TOM BRANNA

Editor

US Patent No. 9,554,976 B2; The Procter & Gamble Company has been awarded a patent for its tooth whitening strip that is comprised of a backing layer; a tooth whitening composition comprising a mixture of first and second polymers, water, and a tooth whitening agent, wherein said first polymer is polyethylene oxide and said second polymer is polyvinyl alcohol; a fibrous web, scrim or mesh comprising fibers arranged to provide void spaces and where the web scrim or mesh has a coating or laye...

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