POLYPLASMA INC.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5424131 Barrier coatings on spacecraft materialsExpiredJan 25, 93Jun 13, 95[B05D, B32B]
5041303 Process for modifying large polymeric surfacesExpiredMar 07, 88Aug 20, 91[C23C]
4728863 Apparatus and method for plasma treatment of substratesExpiredDec 04, 85Mar 01, 88[H05B, H01J]
4599678 Plasma-deposited capacitor dielectricsExpiredMar 19, 85Jul 08, 86[H01G, B32B, H01L]
4557946 Moisture impermeability or organosilicone filmsExpiredJun 03, 83Dec 10, 85[B05D]
4521717 Apparatus for producing a microwave plasma for the treatment of substrates, in particular for the plasma-polymerization of monomers thereonExpiredNov 29, 82Jun 04, 85[H01J]
4407852 Electrets from plasma polymerized materialExpiredOct 16, 80Oct 04, 83[G11C]

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