Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5125976 | Method of milling the Portland clinker for the production of gypsumless Portland cements | Frantisek Skvara, Jaroslav Hrazdira | 1992-06-30 |
| 5076851 | Mixed gypsumless portland cement | Frantisek Skovara, Pius Durovec, Bohumil Cernovsky, Jaroslav Hrazdira, Zdenek Kadlec | 1991-12-31 |