Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7975622 | System and method for reinforcing railway tank cars | Aubra D. McKisic | 2011-07-12 |
| 7849801 | Protective housing assembly for a tank car manway | Wade Woodall | 2010-12-14 |
| 7849802 | Protective housing assembly for a tank car manway | — | 2010-12-14 |
| 6910427 | Security device and method to prevent unauthorized discharge of contents from a tank | Wade Woodall | 2005-06-28 |
| 6138577 | Center plate for railcars | — | 2000-10-31 |
| 5467719 | Method and apparatus for securing a tank to a tank car sill | Christopher C. Harkey | 1995-11-21 |
| 5305237 | Method and apparatus for monitoring a flowable material in a transportable vessel | Buford Randall Jean, Tom L. Erb, Frederick Lynn Whitehead | 1994-04-19 |
| 4941410 | Outlet valve assembly with an extended handle for a railway tank car | Richard L. Zagrocki | 1990-07-17 |
| 4892042 | Combination bottom outlet saddle and sump | Philip James Daum, Walter T. Croson | 1990-01-09 |
| 4453770 | Mining method and system | Hal I. Dunham | 1984-06-12 |
| 4446958 | Cross-pit conveyor | — | 1984-05-08 |