Chem-Elec, Inc.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5130231 Blood plasma test device including a semipermeable membrane made of an expanded hydrophobic material that has been treated with a surfactantExpiredJun 12, 89Jul 14, 92[C12Q, G01N]
4839296 Blood plasma test methodExpiredOct 18, 85Jun 13, 89[G01N]
4786596 Method of preparing a test strip for alcohol testingExpiredFeb 20, 85Nov 22, 88[C12Q]
4500046 Strip material take-up apparatusExpiredNov 22, 82Feb 19, 85[B65H]

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