Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7451818 | Method of reducing sand production from a wellbore | Michael A. Addis, Chengho Abel Lee, Victor Arkady Dunayevsky, Mohamad Fereydoon Khodaverdian | 2008-11-18 |
| 4614235 | Use of mono and polyalkylene glycol ethers as agents for the release of differentially stuck drill pipe | Ivian G. Keener, John C. Newlove, Robert C. Portnoy, Kenneth W. Pober | 1986-09-30 |