Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8303241 | Turbine yaw control | John Gray, Christopher Gray | 2012-11-06 |
| 8147201 | Kinetic hydro power triangular blade hub | John Gray | 2012-04-03 |
| 7973240 | Cable jacket sealing, pressurization, and monitoring | Douglas A. Lessig, Christopher Gray, John Gray | 2011-07-05 |
| 7891953 | Rotating wedge leveler | John Gray, Christopher Gray | 2011-02-22 |
| 7877170 | Remanent voltage generator tachometer and control for induction machine | Jamey Gerlaugh, Douglas A. Lessig, Christopher Gray | 2011-01-25 |
| 7789629 | Non-fouling kinetic hydro power system axial-flow blade tip treatment | — | 2010-09-07 |
| 7597532 | Single sided power generator support frame | John Gray | 2009-10-06 |
| 4827410 | Computer system user interface | — | 1989-05-02 |
| 4613279 | Kinetic hydro energy conversion system | Gabriel L. Miller | 1986-09-23 |