H04N 1/32728
An off-hook condition
Official title: {an off-hook condition}
H04N1/32728 (An off-hook condition) appears on 150 US grants and 44 published applications in this corpus.
Search patents in H04N- Granted patents
- 150
- Published applications
- 44
- Assignees
- 48
- Inventors
- 219
- Latest grant
- 3 Dec 2019
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 7 | 0 |
| 1990 | 7 | 0 |
| 1991 | 8 | 0 |
| 1992 | 10 | 0 |
| 1993 | 10 | 0 |
| 1994 | 11 | 0 |
| 1995 | 5 | 0 |
| 1996 | 15 | 0 |
| 1997 | 9 | 0 |
| 1998 | 13 | 0 |
| 1999 | 10 | 0 |
| 2000 | 4 | 0 |
| 2001 | 4 | 2 |
| 2002 | 2 | 2 |
| 2003 | 1 | 4 |
| 2004 | 1 | 1 |
| 2005 | 1 | 3 |
| 2006 | 3 | 4 |
| 2007 | 1 | 4 |
| 2008 | 0 | 2 |
| 2009 | 2 | 1 |
| 2010 | 2 | 5 |
| 2011 | 2 | 1 |
| 2012 | 4 | 1 |
| 2013 | 3 | 0 |
| 2014 | 1 | 1 |
| 2015 | 2 | 1 |
| 2016 | 0 | 3 |
| 2017 | 4 | 5 |
| 2018 | 3 | 1 |
| 2019 | 3 | 1 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 2 |
By publication year. Applications have been published since 2001.
Recent patents
- Facsimile apparatus, method of controlling the same, and storage medium3 Dec 2019US 10,498,923 B2Canon Kabushiki Kaisha
- Facsimile communication device, line disconnection judgment method and non-transitory recording medium storing a computer readable program2 Jul 2019US 10,341,526 B2Konica Minolta, Inc.
- Facsimile apparatus and control method of facsimile apparatus8 Jan 2019US 10,178,271 B2Canon Kabushiki Kaisha
- Image communication apparatus capable of performing facsimile communication via IP network, method of controlling the same, and storage medium14 Aug 2018US 10,051,137 B2Canon Kabushiki Kaisha
- Image forming apparatus31 Jul 2018US 10,038,817 B2KYOCERA Document Solutions Inc.
- Facsimile apparatus25 Sep 2025US 2025/0301082 A1FUJIFILM Business Innovation Corp.
- Facsimile apparatus11 Sep 2025US 2025/0286960 A1Sharp Kabushiki Kaisha
- Facsimile apparatus, method of controlling the same, and storage medium7 Mar 2019US 2019/0075216 A1Canon Kabushiki Kaisha
- Facsimile communication device, line disconnection judgment method and non-transitory recording medium storing a computer readable program3 May 2018US 2018/0124275 A1Konica Minolta, Inc.
- Facsimile apparatus and control method of facsimile apparatus20 Jul 2017US 2017/0208206 A1Canon Kabushiki Kaisha
Most cited
By later US patents
- Communication apparatus recognizing speech and automatically switching from data to speech transmission127US 4,815,121 ACanon Kabushiki Kaisha · 1989
- Data communication apparatus with voice communication control77US 4,932,048 ACanon Kabushiki Kaisha · 1990
- Data communication apparatus adapted to perform data communication and speech communication76US 4,800,439 ACanon Kabushiki Kaisha · 1989
- Facsimile apparatus with automatic answering telephone function, and communication method in said apparatus55US 5,544,234 ACanon Kabushiki Kaisha · 1996
- Voice/data switch50US 4,821,312 ARainier Technologies Corporation · 1989