Stemlock, Incorporated
Records under this name other than the patents Stemlock, Incorporated 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 Stemlock, Incorporated
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 6,619,387 | Inflatable gas bag for use as a borehole plug Term ended Term ended Sep 12, 2021 · From the USPTO record | Term ended | Term ended Sep 12, 2021 | From the USPTO record |
| US 6,722,105 | Method of making an inflatable gas bag for use as a borehole plug Term ended Term ended Sep 12, 2021 · From the USPTO record | Term ended | Term ended Sep 12, 2021 | From the USPTO record |
| US 6,213,212 | Spherical stemming plug and method of use Term ended Term ended Jul 23, 2019 · From the USPTO record | Term ended | Term ended Jul 23, 2019 | From the USPTO record |
| US 4,846,278 | Borehole plug and method Term ended Term ended no later than Jul 11, 2009 · Low confidence | Term ended | Term ended no later than Jul 11, 2009 | Low confidence |
| US 5,198,613 | Waterproof device for holding explosives in a borehole and method for using the same Term ended Term ended no later than Mar 30, 2013 · Low confidence | Term ended | Term ended no later than Mar 30, 2013 | Low confidence |
| US 5,346,005 | Inflatable borehole plug assemblies Term ended Term ended no later than Sep 13, 2014 · Low confidence | Term ended | Term ended no later than Sep 13, 2014 | Low confidence |