Issued Patents 1994
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5320872 | Method for the reduction or prevention of tannin-staining on a surface susceptible to tannin-staining through the use of a complexing agent for a transition-metal ion and compositions containing such a complexing agent | Thomas E. McNeel | 1994-06-14 |