Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10738605 | In-situ high pressure PH measurement and biofilm sampling device | Yao Xiong, Dennis R. Enning, David S. Fischer, Manuel Castelan | 2020-08-11 |
| 9194787 | Testing apparatus for simulating stratified or dispersed flow | Chong Li, Roy W. Livingston, Bryan M. Oettle | 2015-11-24 |
| 8261601 | Top of the line corrosion apparatus | Dylan V. Pugh, David Anthony Norman, Wei Sun | 2012-09-11 |
| 8029026 | Threaded connections and methods for forming threaded connection | Steven B. Lonnes | 2011-10-04 |
| 4785894 | Apparatus for detecting drill bit wear | Albert P. Davis, Jr. | 1988-11-22 |
| 4785895 | Drill bit with wear indicating feature | Albert P. Davis, Jr. | 1988-11-22 |
| 4655300 | Method and apparatus for detecting wear of a rotatable bit | Albert P. Davis, Jr., Mark S. Ramsey | 1987-04-07 |
| 4588243 | Downhole self-aligning latch subassembly | Mark S. Ramsey | 1986-05-13 |