Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6572118 | Flexible seal member for non-metallic conduit to concrete manhole junction | Michael R. Miller, John M. Kurdziel, James W. Skinner, Ronald W. Neuhaus | 2003-06-03 |
| 5732955 | Expandable compression ring | James W. Skinner, William O. Skinner, Ronald W. Neuhaus, Michael R. Miller | 1998-03-31 |
| 5570890 | Expandable compression ring | James W. Skinner, William O. Skinner, Ronald W. Neuhaus, Michael R. Miller | 1996-11-05 |
| 5507500 | Expandable compression ring with locking members | James W. Skinner, Michael R. Miller, William O. Skinner | 1996-04-16 |
| 4916799 | Method of making a pipe joint seal with bistable elastomeric sealing projection | James W. Skinner | 1990-04-17 |
| 4809994 | Pipe joint seal with bistable elastomeric sealing projection | James W. Skinner | 1989-03-07 |
| 4199157 | Two part sleeve gasket | Harry W. Skinner | 1980-04-22 |