Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6332920 | Slag for cementing a well, in particular an oil well | Christine Noik, Alain Rivereau | 2001-12-25 |
| 4849175 | Apparatus for automatically determining certain characteristics of cement | Jean R. Dupain | 1989-07-18 |