Rolm Systems
Records under this name other than patents Rolm Systems holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 4,253,000 | Method and system for reducing conference bridge oscillations Term ended Term ended no later than Feb 24, 2001 · Low confidence | Term ended | Term ended no later than Feb 24, 2001 | Low confidence |
| US 4,313,036 | Distributed CBX system employing packet network Term ended Term ended no later than Jan 26, 2002 · Low confidence | Term ended | Term ended no later than Jan 26, 2002 | Low confidence |
| US 4,313,037 | Telephone station set with improved flash signalling Term ended Term ended no later than Jan 26, 2002 · Low confidence | Term ended | Term ended no later than Jan 26, 2002 | Low confidence |
| US 4,320,520 | Transmitter/receiver for use on common cable communications system such as ethernet Term ended Term ended no later than Mar 16, 2002 · Low confidence | Term ended | Term ended no later than Mar 16, 2002 | Low confidence |
| US 4,411,004 | Inductively coupled sensing circuit and priority system Term ended Term ended no later than Oct 18, 2003 · Low confidence | Term ended | Term ended no later than Oct 18, 2003 | Low confidence |
| US 4,445,048 | High speed ribbon cable bus Term ended Term ended no later than Apr 24, 2004 · Low confidence | Term ended | Term ended no later than Apr 24, 2004 | Low confidence |
| US 4,459,558 | Phase locked loop having infinite gain at zero phase error Term ended Term ended no later than Jul 10, 2004 · Low confidence | Term ended | Term ended no later than Jul 10, 2004 | Low confidence |
| US 4,475,235 | Signature verification sensor Term ended Term ended no later than Oct 2, 2004 · Low confidence | Term ended | Term ended no later than Oct 2, 2004 | Low confidence |
| US 4,485,470 | Data line interface for a time-division multiplexing (TDM) bus Term ended Term ended no later than Nov 27, 2004 · Low confidence | Term ended | Term ended no later than Nov 27, 2004 | Low confidence |
| US 4,494,229 | Interconnecting apparatus for a distributed switching telephone system Term ended Term ended no later than Jan 15, 2005 · Low confidence | Term ended | Term ended no later than Jan 15, 2005 | Low confidence |