Issued Patents 2002
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6484826 | Engineered enhanced inserts for rock drilling bits | Nathan R. Anderson, J. Daniel Belnap, Ronald K. Eyre, Madapusi K. Keshavan, Per Ivar Nese +2 more | 2002-11-26 |
| 6460636 | Drill bit inserts with variations in thickness of diamond coating | Zhou Yong, Suprant J. Huang, Nathan R. Anderson, J. Daniel Belnap, Ronald K. Eyre +4 more | 2002-10-08 |
| 6460637 | Engineered enhanced inserts for rock drilling bits | Michael A. Siracki, Per Ivar Nese, Madapusi K. Keshavan, J. Daniel Belnap, Ronald K. Eyre +1 more | 2002-10-08 |
| 6439326 | Centered-leg roller cone drill bit | Sujian Huang | 2002-08-27 |
| 6431293 | Dual-seal drill bit pressure communication system | Gary R. Portwood, Robert H. Slaughter, Jr., Roger Didericksen, Peter Thomas Cariveau, Robert Denton | 2002-08-13 |
| 6390210 | Rolling cone bit with gage and off-gage cutter elements positioned to separate sidewall and bottom hole cutting duty | Gary R. Portwood, Gary E. Garcia, James C. Minikus, Per Ivar Nese, Dennis Cisneros | 2002-05-21 |
| 6361873 | Composite constructions having ordered microstructures | Zhou Yong, Sujian Huang, Michael A. Siracki, J. Albert Sue, Ghanshyam Rai +1 more | 2002-03-26 |
| 6336512 | Drill bit having canted seal | Michael A. Siracki, Steven W. Peterson, Quan Nguyen | 2002-01-08 |