H04Q 2213/171
Number indicating signals
Official title: Number indicating signals (no dial signals)
H04Q2213/171 (Number indicating signals) appears on 13 US grants and 0 published applications in this corpus.
Search patents in H04Q- Granted patents
- 13
- Published applications
- 0
- Assignees
- 8
- Inventors
- 18
- Latest grant
- 4 Mar 1997
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Information display provided to calling party4 Mar 1997US 5,608,788 ALucent Technologies Inc.
- Incoming call transfer terminal6 Jun 1995US 5,422,942 ASony Corporation
- Communication apparatus10 Jan 1995US 5,381,240 ACanon Kabushiki Kaisha
- ISDN terminal, ISDN terminal communication system, and method for controlling ISDN terminals23 Aug 1994US 5,341,377 ARicoh Company, Ltd.
- Multi-media communication apparatus3 May 1994US 5,309,434 ACanon Kabushiki Kaisha
No published applications in this class yet.
Most cited
By later US patents
- Communication terminal apparatus and its control method with party identification and notification features144US 5,220,599 AKabushiki Kaisha Toshiba · 1993
- Information display provided to calling party125US 5,608,788 ALucent Technologies Inc. · 1997
- Communication terminal apparatus and control method with party identification features123US 5,200,994 AKabushiki Kaisha Toshiba · 1993
- Call announcement arrangement115US 5,007,076 AAT&T Bell Laboratories · 1991
- Telephone station set102US 4,922,490 AAmerican Telephone and Telegraph Company · 1990