Issued Patents All Time
Showing 26–31 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6113078 | Fluid processing method | — | 2000-09-05 |
| 5672187 | Cyclone vortex system and process | Howard P. Rock, Grant Wood | 1997-09-30 |
| 5512216 | Cyclone vortex process | Howard P. Rock, Grant Wood | 1996-04-30 |
| 5472645 | Cyclone vortex system and process | Howard P. Rock, Grant Wood | 1995-12-05 |
| 4568500 | Fuel efficient, low pollution carburetor | Howard P. Rock | 1986-02-04 |
| 4515734 | Fuel efficient, low pollution carburetor and methods | Howard P. Rock | 1985-05-07 |