Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5069811 | Compositions for the sulphation-removing cleaning of carbonatic lithoidal surfaces | Paolo Parrini | 1991-12-03 |
| 4686064 | Composition for the desulphatizing cleaning of carbonatic stone surfaces | Paolo Parrini | 1987-08-11 |