Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885315 | Foamable thermoplastic polymers and a method for foaming | Tu Pham | 1989-12-05 |
| 4853420 | Foamable thermoplastic polymers and a method for foaming | Tu Pham | 1989-08-01 |
| 4847155 | Barrier film structures | David C. Kelley, Russell H. Cramm, Charles V. Neywick | 1989-07-11 |
| 4847164 | Ethylene copolymers reacted with metal oxides | Paul Neill, Kenneth L. Bryce | 1989-07-11 |
| 4795665 | Containers having internal barrier layers | Morris S. Edmondson | 1989-01-03 |