Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7714056 | Railroad tie and method for making same | Gregory P. Krouse, William J. Krygsman | 2010-05-11 |
| 7195473 | Railroad tie and method for making same | Gregory P. Krouse, William J. Krygsman | 2007-03-27 |
| 6828372 | Railroad tie and method for making same | Gregory P. Krouse, William J. Krygsman | 2004-12-07 |
| 5886078 | Polymeric compositions and methods for making construction materials from them | Wolfgang A. Mack | 1999-03-23 |
| 5366365 | Means for controlling feedstock compaction in forming flexible porous pipes of controlled pore size | Charles R. Killian, Paul D. Bettencourt | 1994-11-22 |