H04N 1/32741
Generating ringing or calling signals or tones
Official title: {Generating ringing or calling signals or tones}
H04N1/32741 (Generating ringing or calling signals or tones) appears on 78 US grants and 18 published applications in this corpus.
Search patents in H04N- Granted patents
- 78
- Published applications
- 18
- Assignees
- 35
- Inventors
- 130
- Latest grant
- 23 Oct 2018
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 5 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 4 | 0 |
| 1993 | 8 | 0 |
| 1994 | 7 | 0 |
| 1995 | 1 | 0 |
| 1996 | 6 | 0 |
| 1997 | 7 | 0 |
| 1998 | 8 | 0 |
| 1999 | 6 | 0 |
| 2000 | 3 | 0 |
| 2001 | 0 | 1 |
| 2002 | 0 | 0 |
| 2003 | 1 | 1 |
| 2004 | 1 | 1 |
| 2005 | 0 | 4 |
| 2006 | 0 | 1 |
| 2007 | 2 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 1 | 3 |
| 2011 | 0 | 0 |
| 2012 | 1 | 2 |
| 2013 | 1 | 0 |
| 2014 | 2 | 0 |
| 2015 | 1 | 0 |
| 2016 | 1 | 1 |
| 2017 | 1 | 2 |
| 2018 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Image forming apparatus that shifts into different power saving states and control method thereof23 Oct 2018US 10,110,764 B2Canon Kabushiki Kaisha
- Communication device suppressing occurrence of communication disturbance4 Jul 2017US 9,699,350 B2KYOCERA Document Solutions Inc.
- Image forming apparatus that shifts into different power saving states and control method thereof22 Nov 2016US 9,503,600 B2Canon Kabushiki Kaisha
- Modem control apparatus, control method thereof, and storage medium24 Mar 2015US 8,988,709 B2Canon Kabushiki Kaisha
- Image processing apparatus, method for controlling the same, and storage medium6 May 2014US 8,718,247 B2Canon Kabushiki Kaisha
- Communication device suppressing occurrence of communication disturbance2 Mar 2017US 2017/0064136 A1KYOCERA Document Solutions Inc.
- Image forming apparatus and control method9 Feb 2017US 2017/0041481 A1Canon Kabushiki Kaisha
- Image forming apparatus and control method14 Apr 2016US 2016/0105581 A1Canon Kabushiki Kaisha
- Image processing apparatus, method for controlling the same, and storage medium15 Nov 2012US 2012/0288076 A1Canon Kabushiki Kaisha
- Modem control apparatus, control method thereof, and storage medium21 Jun 2012US 2012/0154873 A1Canon Kabushiki Kaisha
Most cited
By later US patents
- Network communication apparatus and method for performing a T.38 communication function using a voice capability of a gateway apparatus223US 7,701,931 B2Ricoh Company, Ltd. · 2010
- Communication apparatus recognizing speech and automatically switching from data to speech transmission127US 4,815,121 ACanon Kabushiki Kaisha · 1989
- Additional system for automatic information reception terminal device utilizing telephone circuit90US 4,584,434 AHashimoto Corporation · 1986
- Telephone ring detector65US 5,544,241 A1996
- Communication apparatus selectively operable in voice-communication or in image-communication56US 4,677,660 ACanon Kabushiki Kaisha · 1987