A CORP OF GB

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4891072 Multi-component grouting systemExpiredJul 05, 83Jan 02, 90[C04B]
4529317 Method of and apparatus for monitoring gaseous pollutantsExpiredMar 02, 82Jul 16, 85[G01N]
4518744 Process of melt spinning of a blend of a fibre-forming polymer and an immiscible polymer and melt spun fibres produced by such processExpiredNov 04, 82May 21, 85[D01D]
4508822 Biochemical processExpiredOct 06, 82Apr 02, 85[C12P, C12N]
4489074 1,3,4-Thiadiazin-2-onesExpiredNov 12, 82Dec 18, 84[A61K, C07D]
4456746 Polyester containing residues of a 1-hydroxy-3-6-bis(hydroxyalkoxy)xanth-9-one, process for preparing same and shaped articles thereofExpiredSep 27, 82Jun 26, 84[C08G]
4452923 Polymer-modified polyolsExpiredJul 20, 82Jun 05, 84[C08G]
4446287 Production of vinyl chloride polymersExpiredJul 12, 82May 01, 84[C08F]
4434268 Manufacture of polymer dispersionsExpiredMar 08, 82Feb 28, 84[C08L]
4407308 Smoking articlesExpiredMar 01, 82Oct 04, 83[A24D]
4388472 Substituted diphenyl ethersExpiredJan 13, 81Jun 14, 83[C07C]

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