Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6590108 | Methods for the preparation of dianhydrides | Thomas Link Guggenheim, William J. Swatos, Michael J. Vollmer | 2003-07-08 |
| 6576770 | Preparation of substituted phthalic anhydrides and substituted phthalimides | Thomas Link Guggenheim, Philip L. Angermeier | 2003-06-10 |
| 6528663 | Methods for the preparation of 4-chlorophthalic anhydride | Thomas Link Guggenheim | 2003-03-04 |