Nippon Chemical Industrial

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5520910 Antimicrobial polymer, contact lens and contact lens-care articlesExpiredMar 13, 95May 28, 96[A61K, C08F]
4751208 Method of producing a spinel type ceramic sintered bodyExpiredJul 01, 86Jun 14, 88[C04B]

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