Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4441929 | Superplasticizers for cementitious compositions | Alphonso W. Marcellis, Grannis S. Johnson | 1984-04-10 |
| 4424074 | Additives for cementitious compositions | Jose L. Villa, Joseph V. Sinka, Alphonso W. Marcellis | 1984-01-03 |
| 4290817 | Glucoheptonate composition | Jose L. Villa, Joseph V. Sinka | 1981-09-22 |