Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4975483 | Process for treating an aqueous solution of acrylamide resin in order to enable it to gel slowly even at high temperature | Josiane Durrieu, Jean-Pierre Binon, Gerard Provin, Jean-Jacques Fery | 1990-12-04 |
| 4681634 | Composition cimentaire hydraulique a prise retardee pour cimentation a hautes temperature et pression | Yves Roca, Jacky Rousset, Pierre Bouchut, Daniel Baffreau | 1987-07-21 |