Synergistics Chemicals Ltd.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4448738 Process for producing foamed plastic articlesExpiredMar 15, 82May 15, 84[B29D]
4420449 Process for producing articles from polytetrafluoroethyleneExpiredApr 19, 82Dec 13, 83[B29C]
4407987 Polymeric resins and blends with high packing densitiesExpiredOct 27, 81Oct 04, 83[C08J]
4332479 Apparatus for controlled mixing in a high intensity mixerExpiredMar 27, 80Jun 01, 82[B29B, B01F]
4278530 Process for separating bitumen from a bitumen sand depositExpiredAug 06, 79Jul 14, 81[B03B]
4272474 Process for producing articles of ultra high molecular weight high density polyethyleneExpiredNov 06, 79Jun 09, 81[B29F]

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