Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4882374 | Dioxaphosphorinane compounds and polyolefin compositions sabilized therewith | Richard H. S. Wang | 1989-11-21 |
| 4859726 | Bis-benzotriazolyl compounds and polymeric materials stabilized therewith | Richard H. S. Wang | 1989-08-22 |