H04B 17/408
Using successive loop-backs
Official title: {using successive loop-backs}
H04B17/408 (Using successive loop-backs) appears on 20 US grants and 3 published applications in this corpus.
Search patents in H04B- Granted patents
- 20
- Published applications
- 3
- Assignees
- 19
- Inventors
- 46
- Latest grant
- 8 Oct 2019
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 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 | 1 |
| 2016 | 1 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 1 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Method and apparatus for repeating guided wave communication signals8 Oct 2019US 10,439,675 B2AT&T Intellectual Property I, L. P.
- Loopback-based built-in-self-test23 Aug 2016US 9,425,907 B2ST-Ericsson SA
- Method and apparatus employing wireless remote loopback capability for a wireless system repeater to provide end-to-end testing without a wireline connection26 Jun 2001US 6,253,060 B1Airnet Communications Corporation
- Signal detector for telephone line repeator remote loopback system10 Mar 1998US 5,726,993 ASiemens Telecom Networks
- Remote loopback apparatus and method for telephone line repeaters4 Feb 1997US 5,600,656 ASiemens Stromberg-Carlson
- Method and apparatus for granularity optimization of tx and/or rx beam angle(s)17 Jul 2025US 2025/0233637 A1Rakuten Symphony, Inc.
- Method and apparatus for repeating guided wave communication signals7 Jun 2018US 2018/0159595 A1AT&T Intellectual Property I, L. P.
- Loopback-Based Built-In-Self-Test24 Sep 2015US 2015/0270912 A1ST-Ericsson SA
Most cited
By later US patents
- Method and apparatus employing wireless remote loopback capability for a wireless system repeater to provide end-to-end testing without a wireline connection127US 6,253,060 B1Airnet Communications Corporation · 2001
- Step-by-step remote locating system for repeaters in a PCM link31US 4,402,075 ASociete Anonyme de Tele-Communication · 1983
- Communication circuit loopback test apparatus23US 4,630,268 ARockwell International Corporation · 1986
- Data transmission telemonitoring equipment and system17US 4,635,260 ATelefonia Elettronica e Radio S.p.A. · 1987
- Method and apparatus for monitoring intermediate regenerative repeaters16US 4,406,919 ASiemens Aktiengesellschaft · 1983