Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4879232 | Multilayered structure containing immobilized blud-green algae | J. Gavin MacDonald | 1989-11-07 |
| 4859759 | Siloxane containing benzotriazolyl/tetraalkylpiperidyl substituent | William E. Maycock, J. Gavin MacDonald | 1989-08-22 |
| 4857251 | Method of forming a nonwoven web from a surface-segregatable thermoplastic composition | J. Gavin MacDonald | 1989-08-15 |