Achilles; Roy Derrick
Patent Applications and Registrations
Patent applications and USPTO patent grants for Achilles; Roy Derrick.The latest application filed is for "polycrystalline diamond abrasive elements".
- Achilles; Roy Derrick - Cape Town ZA
- Achilles; Roy Derrick - Bedfordview ZA
- Achilles; Roy Derrick - Johannesburg ZA
| Patent | Date |
|---|---|
| Polycrystalline diamond elements, cutting elements, and related methods Grant RE47,605 - Achilles Sept | 2019-09-17 |
| Polycrystalline diamond abrasive elements Grant 8,240,405 - Lancaster , et al. August 14, 2 | 2012-08-14 |
| Abrasive compacts Grant 8,206,474 - Tank , et al. June 26, 2 | 2012-06-26 |
| Cutting tool insert and drill bit so equipped Grant 8,172,012 - Achilles May 8, 2 | 2012-05-08 |
| Polycrystalline Diamond Abrasive Elements App 20110303467 - Lancaster; Brett ; et al. | 2011-12-15 |
| Polycrystalline Diamond Abrasive Elements App 20110286810 - Lancaster; Brett ; et al. | 2011-11-24 |
| Polycrystalline diamond abrasive elements Grant 8,020,642 - Lancaster , et al. September 20, 2 | 2011-09-20 |
| Polycrystalline diamond abrasive elements Grant 8,016,054 - Lancaster , et al. September 13, 2 | 2011-09-13 |
| Cutting Tool Insert And Drill Bit So Equipped App 20100236837 - Achilles; Roy Derrick | 2010-09-23 |
| Cutting tool insert and drill bit so equipped Grant 7,730,977 - Achilles June 8, 2 | 2010-06-08 |
| Abrasive Compacts App 20100043302 - Tank; Klaus ; et al. | 2010-02-25 |
| Composite tool insert Grant 7,594,553 - Tank , et al. September 29, 2 | 2009-09-29 |
| Polycrystalline diamond abrasive elements Grant 7,575,805 - Achilles , et al. August 18, 2 | 2009-08-18 |
| Polycrystalline Diamond Abrasive Elements App 20080222966 - Lancaster; Brett ; et al. | 2008-09-18 |
| Polycrystalline diamond abrasive elements App 20070181348 - Lancaster; Brett ; et al. | 2007-08-09 |
| Cutting tool insert App 20070039762 - Achilles; Roy Derrick | 2007-02-22 |
| Secondary cutting element for drill bit App 20070017710 - Achilles; Roy Derrick ; et al. | 2007-01-25 |
| Tool insert App 20060260850 - Roberts; Bronwyn Annette ; et al. | 2006-11-23 |
| Method of making a composite abrasive compact Grant 7,074,247 - Tank , et al. July 11, 2 | 2006-07-11 |
| Tool insert App 20060144621 - Tank; Klaus ; et al. | 2006-07-06 |
| Composite tool insert App 20060099895 - Tank; Klaus ; et al. | 2006-05-11 |
| Polycrystalline diamond abrasive elements App 20050139397 - Achilles, Roy Derrick ; et al. | 2005-06-30 |
| Substrate for manufacturing cutting elements Grant D502,952 - Achilles , et al. March 15, 2 | 2005-03-15 |
| Abrasive body Grant 6,733,378 - Tank , et al. May 11, 2 | 2004-05-11 |
| Method of making a composite abrasive compact App 20040037948 - Tank, Klaus ; et al. | 2004-02-26 |
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