BALTEK CORPORATION

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5820737 Anti-fouling laminate marine structuresExpiredFeb 25, 97Oct 13, 98[C23F]
5798160 Foam-plastic core for structural laminateExpiredMay 28, 96Aug 25, 98[B32B]
5716476 Balsa core laminate having bevelled edgesExpiredFeb 25, 97Feb 10, 98[B32B]
5618604 Balsa core laminate having bevelled edgesExpiredSep 15, 95Apr 08, 97[B32B]
4568585 Contourable core for structural laminatesExpiredFeb 22, 85Feb 04, 86[B32B]
4536427 Scrimless contourable core for use in laminated contoured structuresExpiredMar 26, 84Aug 20, 85[B32B]
4461666 Contoured balsa-core laminateExpiredOct 16, 80Jul 24, 84[B32B]
4428993 Structural laminate with expanded wood coreExpiredMay 11, 82Jan 31, 84[B32B]
4351680 Technique for converting balsa logs into contourable panelsExpiredAug 03, 78Sep 28, 82[B27D, B27K, B32B]
4343846 Balsa-core sandwich laminateExpiredMay 12, 80Aug 10, 82[B32B]
4301202 Technique for converting balsa logs into panelsExpiredJun 21, 79Nov 17, 81[B32B]
4262717 Conversion of balsa logs into panelsExpiredSep 21, 79Apr 21, 81[B27F, B27D]
4239008 Lightweight railway car hatch coverExpiredOct 17, 78Dec 16, 80[B61D]
4230061 Liquid cargo containerExpiredJun 29, 78Oct 28, 80[B63B, B65D]
4208369 Technique for converting balsa logs into panelsExpiredApr 06, 78Jun 17, 80[B29D]
4204900 Method of producing thin balsa wood sheetsExpiredFeb 13, 79May 27, 80[B27D, B32B]

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