H04M 19/006
Circuits for increasing the range of current supply source
Official title: {Circuits for increasing the range of current supply source}
H04M19/006 (Circuits for increasing the range of current supply source) appears on 23 US grants and 5 published applications in this corpus.
Search patents in H04M- Granted patents
- 23
- Published applications
- 5
- Assignees
- 13
- Inventors
- 32
- Latest grant
- 20 Aug 2019
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 5 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 2 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 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 | 1 |
| 2019 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- DC distribution connection device20 Aug 2019US 10,390,416 B2SMK Corporation
- Line powered loop extender with communications, control, and diagnostics13 Mar 2007US 7,190,716 B22Wire, Inc.
- Increasing gain with isolating upstream and downstream filters and amplifiers7 Dec 2004US 6,829,292 B1Symmetricom, Inc.
- Dual-slope current battery-feed circuit9 Oct 2001US 6,301,358 B1Avaya Technology Corp.
- Automatic loss control circuit28 Dec 1993US 5,274,703 AAT&T Bell Laboratories
- Dc distribution connection device12 Apr 2018US 2018/0103530 A1SMK Corporation
- Power supply control using dynamic controller parameter(s)7 Jul 2005US 2005/0147233 A1
- Line conditioner and build-out for telephone systems12 Jun 2003US 2003/0108190 A1
- Line powered loop extender with communications, control, and diagnostics8 Aug 2002US 2002/0106076 A12Wire, Inc.
- Subscriber loop range extension using negative-impedance repeaters14 Mar 2002US 2002/0031216 A1
Most cited
By later US patents
- Range extender with gain48US 4,054,941 ABell Telephone Laboratories, Incorporated · 1977
- Line powered loop extender with communications, control, and diagnostics48US 7,190,716 B22Wire, Inc. · 2007
- Telephone range extender with gain20US 4,056,688 ABell Telephone Laboratories, Incorporated · 1977
- Telephone loop resistance detector16US 4,282,407 ABell Telephone Laboratories, Incorporated · 1981
- Increasing gain with isolating upstream and downstream filters and amplifiers13US 6,829,292 B1Symmetricom, Inc. · 2004