Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12125390 | Apparatus, system and method for managing airspace | — | 2024-10-22 |
| 12110653 | Underwater excavation apparatus | Donald Stewart | 2024-10-08 |
| 11821164 | Underwater excavation apparatus | Donald Stewart | 2023-11-21 |
| 11649607 | Underwater excavation apparatus | Donald Stewart | 2023-05-16 |
| 8893408 | Underwater excavation apparatus | Hector Filippus Alexander Van Drentham Susman | 2014-11-25 |
| 8800176 | Underwater excavation apparatus | Donald Stewart | 2014-08-12 |
| 7944073 | Power generator and turbine unit | Hector Fillipus Alexander Van Drentham Susman, Donald MacLeod Stewart | 2011-05-17 |
| 7768145 | Power generator and turbine unit | Hector Fillipus Alexander Van Drentham Susman, Donald MacLeod Stewart | 2010-08-03 |
| 7686075 | Downhole pump assembly and method of recovering well fluids | Hector Fillipus Alexander Van Drentham Susman | 2010-03-30 |
| 6854953 | Speed governor | Hector Van Drentham-Susman, Richard D. Neilson, Donald MacLeod Stewart, Gary L. Harris | 2005-02-15 |
| 6581690 | Window cutting tool for well casing | Hector Van Drentham-Susman | 2003-06-24 |
| 6527513 | Turbine for down-hole drilling | Hector Van Drentham-Susman | 2003-03-04 |
| 6430848 | Underwater excavation apparatus | Hector Filippus Alexander Van Drentham Susman | 2002-08-13 |
| 6178670 | Underwater mining apparatus | Hector Fillipus Alexander Van Drentham Susman | 2001-01-30 |
| 6053663 | Device for creating a local water flow | Jacob Jan Dikken, Paul Smit, Hector Filippus Alexander Van Denham-Susman, Gerard Louis Marie Van Der Schrieck, Willem Jan Lucieer | 2000-04-25 |
| 5833444 | Fluid driven motors | Gary L. Harris, Hector D. Susman | 1998-11-10 |