Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6213211 | Using of stokes law cement slurries for improved well cementation | — | 2001-04-10 |
| 6053245 | Method for monitoring the setting of well cement | — | 2000-04-25 |
| 5469918 | Positive displacement device to improve placement of cement plugs | — | 1995-11-28 |
| 5377753 | Method and apparatus to improve the displacement of drilling fluid by cement slurries during primary and remedial cementing operations, to improve cement bond logs and to reduce or eliminate gas migration problems | Mark Delestatius, Dan G. Brace | 1995-01-03 |
| 5251488 | Multiphase volume and flow test instrument | Gregory J. Hatton | 1993-10-12 |
| 4398597 | Means and method for protecting apparatus situated in a borehole from closure of the borehole | — | 1983-08-16 |