Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4882317 | Covalently-modified bacterial polysaccharides, stable covalent conjugates of such polysaccharides and immunogenic proteins with bigeneric spacers and methods of preparing such polysaccharides and conjugataes and of confirming covalency | Stephen Marburg, Richard L. Tolman | 1989-11-21 |
| 4816564 | Method for producing hepatitis B virus proteins in yeast | Ronald W. Ellis, Arpi Hagopian | 1989-03-28 |