Chemische Fabrik Grunau GmbH

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5496881 Composition for forming fireproof coatings and caulking and a method of useExpiredJun 21, 94Mar 05, 96[C08J, C08L, C08K]
5453212 Powdery hydrophobic filler for bituminized traffic surfacesExpiredMay 04, 94Sep 26, 95[E01C]
5362363 Aqueous dispersions containing alkaline earth soaps and/or alkaline earth resin soaps for deinking printed wastepaperExpiredApr 20, 92Nov 08, 94[D21C]
5126076 Low-flammability structural elements, particularly boards, and process for constructing themExpiredMar 15, 91Jun 30, 92[C08J, E04B]
4971656 Flotation process for deinking printed waste paperExpiredMar 31, 89Nov 20, 90[D21C]
4959123 Process for deinking printed waste paperExpiredFeb 02, 88Sep 25, 90[D12C]
4816312 Fire prevention materialExpiredOct 14, 86Mar 28, 89[B32B]
4798917 Kit for producing fireproof cable ductsExpiredOct 31, 86Jan 17, 89[H02G]
4584214 Fireproof coveringExpiredJun 20, 84Apr 22, 86[H01B, B32B]
4452850 Roofing web coated with plasticized polyvinyl chloride on both sidesExpiredAug 14, 81Jun 05, 84[B32B]
4436556 Process for consolidating soil and frost protection layers produced therebyExpiredJul 24, 81Mar 13, 84[C04B]

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