Issued Patents 2003
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6660078 | Methods, well cement compositions and lightweight additives therefor | Lance E. Brothers, Krista L. Keener | 2003-12-09 |
| 6648961 | Methods, well cement compositions and lightweight additives therefor | Lance E. Brothers, Krista L. Keener | 2003-11-18 |
| 6631766 | Methods, well cement compositions and lightweight additives therefor | Lance E. Brothers, Krista L. Keener, Jan Pieter Vijn, Bach Dao | 2003-10-14 |
| 6601647 | Methods, well cement compositions and lightweight additives therefor | Lance E. Brothers, Krista L. Keener | 2003-08-05 |