Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9353525 | Semi-rigid connections for braced frames | Ralph M. Richard, Clayton J. Allen, Rudolph E. Radau, Jr. | 2016-05-31 |
| 8365476 | Braced frame force distribution connection | Ralph M. Richard, Rudolph E. Radau, Jr., Clayton J. Allen | 2013-02-05 |
| 7047695 | Steel frame stress reduction connection | Clayton J. Allen, Ralph M. Richard | 2006-05-23 |
| 6991669 | System and method for silver recovery and monitoring | James Partridge, Jeffery S. Partridge | 2006-01-31 |
| 6237303 | Steel frame stress reduction connection | Clayton J. Allen, Ralph M. Richard | 2001-05-29 |
| 5680738 | Steel frame stress reduction connection | Clayton J. Allen, Ralph M. Richard | 1997-10-28 |