Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10445841 | Systems and methods for earth-boring rotary drill bit selection | John M. Meerdo, Scott F. Donald, Robert A. Laing, Chaitanya K. Vempati | 2019-10-15 |
| 8104550 | Methods for applying wear-resistant material to exterior surfaces of earth-boring tools and resulting structures | James L. Overstreet, Michael L. Doster, Mark E. Morris, Kenneth E. Gilmore, Robert M. Welch | 2012-01-31 |
| 7861806 | Shank structure for rotary drill bits | Anton F. Zahradnik, Eric C. Sullivan, R. Scot Smith, Daniel E. Ruff, Alan J. Massey | 2011-01-04 |
| 7836979 | Drill bits and tools for subterranean drilling | James C. Green, Michael L. Doster, Jason E. Hoines, Robert M. Welch | 2010-11-23 |
| 7600589 | Rotary drill bits | Anton F. Zahradnik, Eric C. Sullivan, R. Scot Smith, Daniel E. Ruff, Alan J. Massey | 2009-10-13 |
| 7594454 | Methods of fabricating rotary drill bits | Anton F. Zahradnik, Eric C. Sullivan, R. Scot Smith, Daniel E. Ruff, Alan J. Massey | 2009-09-29 |
| 7472764 | Rotary drill bit shank, rotary drill bits so equipped, and methods of manufacture | Anton F. Zahradnik, Eric C. Sullivan, R. Scot Smith, Daniel E. Ruff, Alan J. Massey | 2009-01-06 |