Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9835098 | System and method of injecting natural gas in liquid form into a diesel engine | Keith Murray Rumbel | 2017-12-05 |
| 9249745 | Diesel fuel engine injection system and method therefor | Bruce Robert Watkins, Keith Murray Rumbel | 2016-02-02 |
| 9057344 | System and method of injecting combustible gas in liquid form into a diesel engine | Keith Murray Rumbel | 2015-06-16 |
| 8991362 | Diesel fuel engine injection system and method therefor | Bruce Robert Watkins, Keith Murray Rumbel | 2015-03-31 |
| 8214128 | Diesel fuel engine injection system and method therefor | Bruce Robert Watkins, Keith Murray Rumbel | 2012-07-03 |