Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7455112 | Methods and compositions relating to the control of the rates of acid-generating compounds in acidizing operations | William Walter Shumway | 2008-11-25 |
| 7431088 | Methods of controlled acidization in a wellbore | William Walter Shumway, Bradley L. Todd | 2008-10-07 |