Technology
DRT has developed a significant portfolio of intellectual property across subsea mining, mineral recovery, environmental protection, offshore wind installation, and marine foundations.
Patent and Intellectual Property Portfolio
Subsea Excavation Systems and Methods (Trenchcutter for SMS)
Patents 8,935,864 | 9,353,501 | SG187841 | EP2603642
Inventors: John Halkyard, Eric Jackson, Jonathan Machin
Method for Hydraulic Lifting of Fluids Using Hollow Glass Microsphere Slurry
Application 61/713,985
Inventors: John Halkyard, Michael Rai Anderson
System for Recovering Minerals from the Seabed (REE Enriched Muds)
Patents 10,458,235 & SG 11201801497U
Inventors: John Halkyard, Richard Petters, Douglas Maxwell, Michael Rai Anderson, Laurie Meyer
Multiphase Separation and Pressure Letdown Method
Patent 11,794,134
Inventors: Steven Rizea, James Wodehouse, Paul Smith, John Halkyard, Michael Rai Anderson
Recovering Minerals from the Seabed and Shipboard Processing (REE Enriched Muds)
Patents 10,458,235 & SG 11201801497U
Inventors: John Halkyard, Richard Petters, Douglas Maxwell, Michael Rai Anderson, Laurie Meyer
Methods for Reducing Sediment Plume in Deepsea Nodule Mining (Augmented Screen)
Patent 11,920,471
Inventors: John Halkyard, Michael Rai Anderson, James Wodehouse
Methods for Advanced Suppression of Seabed Mining Plumes (Inverse Hydrocyclone)
Patent 12,606,982
Inventors: Robert D. Blevins, John Halkyard, Michael Rai Anderson, James Wodehouse, Samuel Holmes
Installation System and Method for an Offshore Wind Turbine
Patent 12,539,947
Inventors: Shukai Wu, John Halkyard
Installation Time Design of Micropiles
Application 2026/0176960
Inventors: John Halkyard
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