Issued Patents 1994
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5353984 | Foldable paper board for forming a container | Richard C. H. Chang | 1994-10-11 |
| 5335845 | Partitioned and foldable paper food container | — | 1994-08-09 |
| 5332148 | Paper board foldable into a container with multiple compartments | Richard C. H. Chang | 1994-07-26 |
| 5323958 | Paper board foldable into a container with multiple compartments | Richard C. H. Chang | 1994-06-28 |