Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6167747 | Apparatus for detecting hydrocarbon using crystal oscillators within fuel dispensers | Wolfgang Koch | 2001-01-02 |
| 6103532 | Vapor recovery system utilizing a fiber-optic sensor to detect hydrocarbon emissions | Wolfgang Koch | 2000-08-15 |
| 5988232 | Vapor recovery system employing oxygen detection | Wolfgang Koch | 1999-11-23 |
| 5075550 | Infrared detector for hydrogen fluoride gas | David C. Miller | 1991-12-24 |
| 4813269 | Magnetic interface contaminant collector for leak detector in above ground tank | David C. Miller | 1989-03-21 |
| 4813277 | Method for collecting magnetizable particles in an above ground storage tank | David C. Miller | 1989-03-21 |
| 4813284 | Method for establishing a clean interface in a leak detector in an above ground storage tank | David C. Miller | 1989-03-21 |
| 4813285 | Apparatus for establishing a clean interface in a leak detector | David C. Miller | 1989-03-21 |
| 4736622 | Method for detecting leaks in an above ground petroleum storage tank | David C. Miller | 1988-04-12 |
| 4736623 | Leak detector | David C. Miller | 1988-04-12 |