Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10604819 | Method of making high strength steel crane rail | Frederick B. Fletcher, Jason T McCullough, Michael A. Muscarella, John S. Nelson | 2020-03-31 |
| 9512501 | Hypereutectoid-head steel rail | Fred B. Fletcher, John A. Davis | 2016-12-06 |
| 9476107 | Method of making high strength steel crane rail | Frederick B. Fletcher, Jason T McCullough, Michael A. Muscarella, John S. Nelson | 2016-10-25 |
| 8721807 | Hypereutectoid, head-hardened steel rail | Fred B. Fletcher, John A. Davis | 2014-05-13 |
| 8241442 | Method of making a hypereutectoid, head-hardened steel rail | Fred B. Fletcher, John A. Davis | 2012-08-14 |
| 5387392 | High strength, high toughness steel grade and gas cylinder thereof | Leonard C. Luscomb | 1995-02-07 |
| 5017335 | Microalloyed steel and process for preparing a railroad joint bar | Steven S. Hansen | 1991-05-21 |
| 4415376 | Formable high strength low alloy steel sheet | Steven S. Hansen, Donald L. Harper, Roger R. Pradhan | 1983-11-15 |
| 4398970 | Titanium and vanadium dual-phase steel and method of manufacture | Arnold R. Marder | 1983-08-16 |