Issued Patents 2005
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6884894 | Method for producing bisphenol catalysts and bisphenols | James Spivack | 2005-04-26 |
| 6872860 | Method for producing bisphenol catalysts and bisphenols | James Spivack | 2005-03-29 |