H04L 1/243
At the transmitter, using a loop-back
Official title: {at the transmitter, using a loop-back}
H04L1/243 (At the transmitter, using a loop-back) appears on 276 US grants and 240 published applications in this corpus.
Search patents in H04L- Granted patents
- 276
- Published applications
- 240
- Assignees
- 171
- Inventors
- 583
- Latest grant
- 2 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 6 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 6 | 0 |
| 2000 | 4 | 0 |
| 2001 | 2 | 2 |
| 2002 | 6 | 8 |
| 2003 | 4 | 15 |
| 2004 | 4 | 18 |
| 2005 | 7 | 8 |
| 2006 | 15 | 10 |
| 2007 | 12 | 20 |
| 2008 | 8 | 12 |
| 2009 | 14 | 9 |
| 2010 | 15 | 7 |
| 2011 | 7 | 10 |
| 2012 | 10 | 6 |
| 2013 | 5 | 11 |
| 2014 | 19 | 13 |
| 2015 | 22 | 22 |
| 2016 | 11 | 11 |
| 2017 | 10 | 9 |
| 2018 | 10 | 12 |
| 2019 | 15 | 8 |
| 2020 | 7 | 9 |
| 2021 | 5 | 3 |
| 2022 | 8 | 6 |
| 2023 | 4 | 5 |
| 2024 | 5 | 3 |
| 2025 | 4 | 1 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Systems for and methods of unified packet recirculation2 Dec 2025US 12,489,719 B2Avago Technologies International Sales Pte. Limited
- Storing data in transit over links of a network7 Oct 2025US 12,438,650 B2Duplicent, LLC
- Interface with variable data rate19 Aug 2025US 12,393,547 B2Rambus Inc.
- Facilitating outer loop link adaptation in advanced networks1 Apr 2025US 12,267,157 B2AT&T Intellectual Property I, L. P.
- Systems, methods, and storage media for detecting a security intrusion of a network device3 Dec 2024US 12,160,320 B2Level 3 Communications, LLC
- Internet storage6 Aug 2026US 2026/0230237 A1Duplicent, LLC
- Low voltage differential signaling (lvds) system having a built-in self-testing (bist) circuit5 Mar 2026US 2026/0067006 A1NXP USA, Inc.
- Facilitating outer loop link adaptation in advanced networks19 Jun 2025US 2025/0202616 A1AT&T Intellectual Property I, L. P.
- Interface with Variable Data Rate8 Aug 2024US 2024/0264972 A1Rambus Inc.
- Systems for and methods of unified packet recirculation27 Jun 2024US 2024/0214330 A1Avago Technologies International Sales Pte. Limited
Most cited
By later US patents
- Method and apparatus for testing a packet-based network308US 5,477,531 AHewlett-Packard Company · 1995
- Transceiver for extending a CSMA/CD network for wireless communication159US 5,917,629 AInternational Business Machines Corporation · 1999
- Method and apparatus for evaluating and optimizing a signaling system146US 7,490,275 B2Rambus Inc. · 2009
- Method and system for selectively accessing multiplexed data transmission network for monitoring and testing of the network135US 4,059,729 AMartin Marietta Aerospace · 1977
- Method and apparatus for objectively characterizing communications link quality113US 5,784,406 AQUALCOM Incorporated · 1998