D-Mark, Inc.
Records under this name other than patents D-Mark, Inc. holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned.
Showing 1 to 5 of 5 · Back to D-Mark, Inc.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 6,878,193 | Filter Material and Method of Making Same Term ended Term ended Jan 13, 2023 · High confidence | Term ended | Term ended Jan 13, 2023 | High confidence |
| US 4,227,904 | Gas phase permeable filter Term ended Term ended no later than Oct 14, 2000 · Low confidence | Term ended | Term ended no later than Oct 14, 2000 | Low confidence |
| US 4,699,681 | Method of making a gas phase permeable filter Term ended Term ended no later than Oct 13, 2007 · Low confidence | Term ended | Term ended no later than Oct 13, 2007 | Low confidence |
| US 5,124,177 | Filter and method of making same Term ended Term ended no later than Jun 23, 2012 · Low confidence | Term ended | Term ended no later than Jun 23, 2012 | Low confidence |
| US 5,338,340 | Filter and method of making same Term ended Term ended no later than Aug 16, 2014 · Low confidence | Term ended | Term ended no later than Aug 16, 2014 | Low confidence |