Deepsea Ventures, Inc.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4506591 Ocean floor dredge system having a pneumohydraulic means suitable for providing tripping and heave compensation modesExpiredSep 27, 82Mar 26, 85[F15B, F01B]
4438902 Pipe string lift systemExpiredNov 02, 81Mar 27, 84[B66F]
4408404 Pivotable articulated support shoe for hydraulic nozzleExpiredSep 08, 80Oct 11, 83[E02F]
4407716 Liquid flow system including multi-axial liquid flow screening means for excluding oversized slender objects carried by a liquidExpiredJun 08, 81Oct 04, 83[B01D, E02F]
4387518 Separable liquid flow screening means for excluding oversized, slender objects carried by a liquid, and dredge means including sameExpiredJun 08, 81Jun 14, 83[B07B, E02F, B01D]
4382361 Ocean floor dredge system having a pneumohydraulic means suitable for providing tripping and heave compensation modesExpiredMay 06, 80May 10, 83[B66D]
4367601 Separable means for excluding oversized slender objectsExpiredFeb 09, 81Jan 11, 83[E02F]
4347675 Dredging means having means for excluding oversized slender objectsExpiredFeb 09, 81Sep 07, 82[B07B, E02F, B01D]
4346937 Dredging apparatus including suction nozzlesExpiredJun 02, 80Aug 31, 82[E02F]
4347029 Pipe transfer systemExpiredDec 28, 79Aug 31, 82[E21B]
4327505 Remotely steerable dredge vehicleExpiredJun 19, 80May 04, 82[E02F]
4323216 Balanced support platesExpiredJan 10, 80Apr 06, 82[A47H]
4319414 Dredgehead having forward water-deflecting means comprising two transverse elementsExpiredJun 02, 80Mar 16, 82[E02F]
4319782 Means for controlling feed of particulate material into airlift pipeExpiredJun 06, 80Mar 16, 82[E02F]
4311342 Dredge head with mechanical and pumping actionExpiredOct 30, 78Jan 19, 82[E02F]
4249324 Steerable ocean floor dredge vehicleExpiredApr 25, 79Feb 10, 81[E02F]
4208813 Steerable ocean floor dredge vehicleExpiredMay 26, 78Jun 24, 80[E02F]
4200999 Pivotable means for decreasing drag effects on a generally cylindrical dredge pipeExpiredMay 30, 78May 06, 80[E02F]

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