H04Q 2213/175
Indexing scheme relating to selecting arrangements in general and for multiplex systems
Official title: Other signals
H04Q2213/175 (Indexing scheme relating to selecting arrangements in general and for multiplex systems) appears on 6 US grants and 0 published applications in this corpus.
Search patents in H04Q- Granted patents
- 6
- Published applications
- 0
- Assignees
- 4
- Inventors
- 12
- Latest grant
- 10 Aug 1999
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Method for sending out absent messages from ISDN exchange system10 Aug 1999US 5,937,039 ASamsung Electronics Co., Ltd.
- Supervisory image communication system through an integrated service digital network27 Aug 1996US 5,550,835 ANEC Corporation
- ISDN interfacing of personal computers22 Aug 1995US 5,444,703 A
- Simultaneous voice and data system using the existing two-wire inter-face25 May 1993US 5,214,650 AAG Communication Systems Corporation
- Semi-automated operator assistance telecommunication calls3 Sep 1991US 5,046,183 AAT&T Bell Laboratories
No published applications in this class yet.
Most cited
By later US patents
- Simultaneous voice and data system using the existing two-wire inter-face157US 5,214,650 AAG Communication Systems Corporation · 1993
- ISDN interfacing of personal computers54US 5,444,703 A1995
- Semi-automated operator assistance telecommunication calls44US 5,046,183 AAT&T Bell Laboratories · 1991
- Time and charges information delivery for operator assistance telecommunication calls28US 5,043,983 AAT&T Bell Laboratories · 1991
- Method for sending out absent messages from ISDN exchange system4US 5,937,039 ASamsung Electronics Co., Ltd. · 1999