Technitrol, Inc., a Corp. of Pa.
Records under this name other than patents Technitrol, Inc., a Corp. of Pa. holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned.
Back to Technitrol, Inc., a Corp. of Pa.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 4,216,952 | Feed mechanism for sequentially separating documents, sheets, coupons and the like Formerly held Term ended Term ended no later than Aug 12, 2000 · Low confidence | Term ended | Term ended no later than Aug 12, 2000 | Low confidence |
| US 4,217,139 | Process of preparing an electrical contact material Formerly held Term ended Term ended no later than Aug 12, 2000 · Low confidence | Term ended | Term ended no later than Aug 12, 2000 | Low confidence |
| US 4,253,651 | Document interleaver device Formerly held Term ended Term ended no later than Mar 3, 2001 · Low confidence | Term ended | Term ended no later than Mar 3, 2001 | Low confidence |
| US 4,294,616 | Electrical contacts Formerly held Term ended Term ended no later than Oct 13, 2001 · Low confidence | Term ended | Term ended no later than Oct 13, 2001 | Low confidence |
| US 4,361,033 | Method for selecting an additive for electrical contacts Term ended Term ended no later than Nov 30, 2002 · Low confidence | Term ended | Term ended no later than Nov 30, 2002 | Low confidence |
| US 4,416,449 | Document separating apparatus and method Formerly held Term ended Term ended no later than Nov 22, 2003 · Low confidence | Term ended | Term ended no later than Nov 22, 2003 | Low confidence |
| US 4,427,625 | Silver cadmium oxide electrical contacts Term ended Term ended no later than Jan 24, 2004 · Low confidence | Term ended | Term ended no later than Jan 24, 2004 | Low confidence |
| US 4,450,135 | Method of making electrical contacts Term ended Term ended no later than May 22, 2004 · Low confidence | Term ended | Term ended no later than May 22, 2004 | Low confidence |
| US 4,450,204 | Silver material suitable for backing of silver-cadmium oxide contacts and contacts employing same Term ended Term ended no later than May 22, 2004 · Low confidence | Term ended | Term ended no later than May 22, 2004 | Low confidence |
| US 4,488,356 | Method of making electrical contacts Term ended Term ended no later than Dec 18, 2004 · Low confidence | Term ended | Term ended no later than Dec 18, 2004 | Low confidence |