Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5883233 | Paper dye | Richard H. Kokel | 1999-03-16 |
| 5133873 | Process for removal of copper ions from aqueous effluent | Margaret D. Ellis, James J. Good, Mark A. Putnam, Neal E. Tonks, Donald V. Wood | 1992-07-28 |