D & D
Records under this name other than the patents D & D holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned. None of them is counted in the 4 patents it holds.
Showing 1 to 6 of 6 · Back to D & D
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 6,132,212 | Material and apparatus for removing dental caries Formerly held Lapsed on the fee record Ended Oct 17, 2012 · From the USPTO record | Lapsed on the fee record | Ended Oct 17, 2012 | From the USPTO record |
| US 6,126,444 | Plaque remover injected with water or with water and compressed air Lapsed on the fee record Ended Oct 3, 2012 · From the USPTO record | Lapsed on the fee record | Ended Oct 3, 2012 | From the USPTO record |
| US 6,500,002 | Oral cavity spreading apparatus Lapsed on the fee record Ended Dec 31, 2010 · From the USPTO record | Lapsed on the fee record | Ended Dec 31, 2010 | From the USPTO record |
| US 4,113,016 | Casing perforation method and apparatus Formerly held Term ended Term ended no later than Sep 12, 1998 · Low confidence | Term ended | Term ended no later than Sep 12, 1998 | Low confidence |
| US 4,375,834 | Casing perforation method and apparatus Formerly held Term ended Term ended no later than Mar 8, 2003 · Low confidence | Term ended | Term ended no later than Mar 8, 2003 | Low confidence |
| US RE30,829 | Casing perforation method and apparatus Formerly held Term ended | Term ended |