Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8104341 | Ultrasonic liquid level monitoring system | Christian N. Staats, Kenneth M. Wegrzyn, Kelvin Woltring, Wayne Case | 2012-01-31 |
| 7905143 | Ultrasonic fuel level monitoring system incorporating an acoustic lens | — | 2011-03-15 |
| 7287425 | Ultrasonic fuel level monitoring device | — | 2007-10-30 |
| 7245059 | Method of exciting a piezoelectric crystal | Steven Scott Kazemir | 2007-07-17 |
| 5117678 | Method for storage tank leak detection having ground water compensation | — | 1992-06-02 |
| 4993257 | Method for storage tank leak detection having ground water compensation | — | 1991-02-19 |
| 4967592 | Test probe for use in a storage tank leak detection system | C. Cameron Allen, Jr. | 1990-11-06 |
| 4921150 | Automatic dispensing apparatus having low power consumption | C. Cameron Allen, Jr., Lacy C. Lance | 1990-05-01 |
| 4914943 | Apparatus for eliminating measuring inaccuracies in a storage tank leak detection system | — | 1990-04-10 |
| 4850226 | Interface circuit for use in an echo ranging system | C. Cameron Allen, Jr. | 1989-07-25 |
| 4798092 | Flowmeter for use in a flow monitoring system | David J. Roh | 1989-01-17 |
| 4732035 | Method and apparatus for storage tank leak detection having temperature compensation | C. Cameron Allen, Jr. | 1988-03-22 |