Helmic, Inc.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4847140 Nonwoven fibrous insulation materialExpiredApr 08, 85Jul 11, 89[E04B, B32B]
4617383 Method for degumming and bleaching decorticated plant bast fiberExpiredJan 30, 86Oct 14, 86[D01C, C13L, D21C]
4568739 Method for degumming decorticated plant bast fiberExpiredNov 05, 84Feb 04, 86[D01C, C13L, D21C]
4481355 Method for degumming decorticated plant bast fiberExpiredNov 22, 83Nov 06, 84[D01C, C13L, D21C]

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