H04Q 1/36
Pulse-correcting arrangements
Official title: Pulse-correcting arrangements, e.g. for reducing effects due to interference
H04Q1/36 (Pulse-correcting arrangements) appears on 22 US grants and 1 published applications in this corpus.
Search patents in H04Q- Granted patents
- 22
- Published applications
- 1
- Assignees
- 19
- Inventors
- 32
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 6 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Device for detection of a clipped ringing signal22 Sep 2026US 12,745,022 B2Nuvoton Technology Corporation
- Terminal repeater having a function for repeating DC loop signal4 Feb 1992US 5,086,462 AKabushiki Kaisha Toshiba
- Method for determining telephone dial pulse parameters independently of subscriber line length13 Jun 1989US 4,839,920 ASiemens Aktiengesellschaft
- Constant-percent break pulse corrector20 May 1986US 4,590,432 AAT&T Bell Laboratories
- Electronic telephone relay26 Nov 1985US 4,555,593 AMicrocommunications, Inc.
Most cited
By later US patents
- Dial pulse restorer20US 4,319,091 ADictaphone Corporation · 1982
- Regeneration of signalling pulses12US 3,985,970 ASociete Lignes Telegraphiques et Telephoniques · 1976
- Dial pulse sensor and repeater circuit11US 4,230,912 AGTE Automatic Electric Laboratories Incorporated · 1980
- Digital method and apparatus for dynamically generating an output pulse train having a desired duty cycle from an input pulse train8US 4,075,569 ARockwell International Corporation · 1978
- Ringing signal detector7US 4,184,053 AIwasaki Tsushinki Kabushiki Kaisha · 1980