Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6164108 | Hydro compression tube forming die apparatus and method for making the same | James Holbrook Brown | 2000-12-26 |
| 6006567 | Apparatus and method for hydroforming | James Holbrook Brown | 1999-12-28 |
| 5890387 | Apparatus and method for forming and hydropiercing a tubular frame member | Ralph E. Roper, Douglas W. Tyger | 1999-04-06 |
| 5533372 | Controlled material flow hydroforming | Ralph E. Roper | 1996-07-09 |
| 5481892 | Apparatus and method for forming a tubular member | Ralph E. Roper, Douglas W. Tyger, Donald F. Lowen | 1996-01-09 |
| 5372027 | Controlled material flow hydroforming | Ralph E. Roper | 1994-12-13 |
| 5353618 | Apparatus and method for forming a tubular frame member | Ralph E. Roper, Douglas W. Tyger | 1994-10-11 |