Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5582874 | Method for coating corrugating rolls using high velocity oxygen fueled thermal spray | — | 1996-12-10 |
| 5180448 | Method of laser hardening corrugating rolls | Gene White | 1993-01-19 |
| 5160556 | Method of hardening corrugating rolls | Robert R. Ulrich | 1992-11-03 |
| 4334927 | Piston ring coatings | John E. Cromwell | 1982-06-15 |
| 4307890 | Piston ring with chrome-filled groove | John E. Cromwell, Nicholas Herbert | 1981-12-29 |