Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6077137 | Anti ingestion device | — | 2000-06-20 |
| 5787864 | Hydrogen enriched natural gas as a motor fuel with variable air fuel ratio and fuel mixture ratio control | Robert Kirk Collier, Jr., Robert L. Hoekstra, David Neal Mulligan | 1998-08-04 |
| 5666923 | Hydrogen enriched natural gas as a motor fuel with variable air fuel ratio and fuel mixture ratio control | Robert Kirk Collier, Jr., Robert L. Hoekstra, David Neal Mulligan | 1997-09-16 |
| 5660602 | Hydrogen enriched natural gas as a clean motor fuel | Robert Kirk Collier, Jr., Robert L. Hoekstra, David Neal Mulligan | 1997-08-26 |
| 5188628 | Closure device for enteral fluid containers | Robert G. Rani | 1993-02-23 |