H04N 1/3271
Telephone answering machine
Official title: {Telephone answering machine}
H04N1/3271 (Telephone answering machine) appears on 65 US grants and 5 published applications in this corpus.
Search patents in H04N- Granted patents
- 65
- Published applications
- 5
- Assignees
- 20
- Inventors
- 81
- Latest grant
- 14 Jul 2009
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 5 | 0 |
| 1993 | 5 | 0 |
| 1994 | 6 | 0 |
| 1995 | 3 | 0 |
| 1996 | 13 | 0 |
| 1997 | 13 | 0 |
| 1998 | 3 | 0 |
| 1999 | 6 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 3 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Communication terminal14 Jul 2009US 7,561,562 B2Sharp Kabushiki Kaisha
- Speech detection device for detecting a speech signal in an input signal25 Nov 2003US 6,654,450 B1Sagem SA
- Method of receiving a facsimile message28 Aug 2001US 6,282,504 B1
- Method and apparatus for changing operational mode of a facsimile system14 Dec 1999US 6,002,752 ASamsung Electronics Co., Ltd.
- Communication apparatus23 Nov 1999US 5,991,371 ABrother Kogyo Kabushiki Kaisha
- Systems and Methods for Communicating Multimodal Messages21 May 2009US 2009/0128861 A1Xpedite Systems, LLC
- Method and apparatus for routing internet telephone calls based upon the media types and formats or CODEC capabilities of the end points or destinations5 Jul 2007US 2007/0153776 A1
- Multi-functional printer device7 Jul 2005US 2005/0146743 A1
- Multi-functional printer device7 Jul 2005US 2005/0146754 A1
- Communication terminal14 Apr 2005US 2005/0078697 A1Sharp Kabushiki Kaisha
Most cited
By later US patents
- Communication system for transmitting to a portable receiver data indicative of received image or voice signals154US 5,159,624 ASharp Kabushiki Kaisha · 1992
- Additional system for automatic information reception terminal device utilizing telephone circuit90US 4,584,434 AHashimoto Corporation · 1986
- Multi-function telecommunications instrument78US 5,631,745 ACurrent Logic · 1997
- Data communication apparatus with voice communication control77US 4,932,048 ACanon Kabushiki Kaisha · 1990
- Automated attendant76US 5,206,900 A1993