Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4199496 | Process for the recovery of chemicals from the shells of crustacea | Edwin L. Johnson | 1980-04-22 |
| 4195175 | Process for the manufacture of chitosan | Edwin L. Johnson | 1980-03-25 |