Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8413845 | Dual-compartment dispensing container | Norman Usen, Anthony E. Winston | 2013-04-09 |
| 6874658 | Design and method for producing a sealing and shut-off valve system on a plural chamber dispensing tube | Ralph Thomas, William J. Weber | 2005-04-05 |
| 6210621 | Method for making plural chambered dispensing tubes | Norman Usen | 2001-04-03 |