H04Q 2213/07
Call distribution
Official title: Call distribution; Call detection; Call signalling by common apparatus
H04Q2213/07 (Call distribution) appears on 5 US grants and 0 published applications in this corpus.
Search patents in H04Q- Granted patents
- 5
- Published applications
- 0
- Assignees
- 5
- Inventors
- 9
- Latest grant
- 14 Sep 1999
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Distinctive ringing and distinctive call-waiting tones in an ISDN14 Sep 1999US 5,953,407 ANortel Networks Limited
- Interface for a data telephone and data terminal in a digital telephone system31 May 1994US 5,317,630 AAT&T Bell Laboratories
- Interface for ISDN channels12 May 1992US 5,113,396 ACanon Kabushiki Kaisha
- Telephone apparatus and a method of controlling same8 Oct 1991US 5,056,083 AKabushiki Kaisha Toshiba
- Method and apparatus for priority control of incoming calls at ISDN terminals18 Sep 1990US 4,958,153 ANEC Corporation
No published applications in this class yet.
Most cited
By later US patents
- Interface for a data telephone and data terminal in a digital telephone system58US 5,317,630 AAT&T Bell Laboratories · 1994
- Interface for ISDN channels31US 5,113,396 ACanon Kabushiki Kaisha · 1992
- Method and apparatus for priority control of incoming calls at ISDN terminals29US 4,958,153 ANEC Corporation · 1990
- Distinctive ringing and distinctive call-waiting tones in an ISDN5US 5,953,407 ANortel Networks Limited · 1999
- Telephone apparatus and a method of controlling same1US 5,056,083 AKabushiki Kaisha Toshiba · 1991