Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5840114 | High early-strength-enhancing admixture for precast hydraulic cement and compositions containing same | Ara A. Jeknavorian, Ahmad Arfaei, Neal S. Berke, David C. Darwin, Ellis Gartner +2 more | 1998-11-24 |
| 5703174 | Air controlling superplasticizers | Ahmad Arfaei | 1997-12-30 |