Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4542239 | Process for recovering terephthalic acid from waste polyethylene terephthalate | Bruce Barna, David Raymond Johnsrud | 1985-09-17 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4542239 | Process for recovering terephthalic acid from waste polyethylene terephthalate | Bruce Barna, David Raymond Johnsrud | 1985-09-17 |