H04L 25/4917
Using multilevel codes
Official title: {using multilevel codes}
H04L25/4917 (Using multilevel codes) appears on 1,621 US grants and 1,154 published applications in this corpus.
Search patents in H04L- Granted patents
- 1,621
- Published applications
- 1,154
- Assignees
- 482
- Inventors
- 2,213
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 6 | 0 |
| 1978 | 8 | 0 |
| 1979 | 1 | 0 |
| 1980 | 6 | 0 |
| 1981 | 11 | 0 |
| 1982 | 3 | 0 |
| 1983 | 7 | 0 |
| 1984 | 9 | 0 |
| 1985 | 8 | 0 |
| 1986 | 5 | 0 |
| 1987 | 10 | 0 |
| 1988 | 11 | 0 |
| 1989 | 10 | 0 |
| 1990 | 8 | 0 |
| 1991 | 9 | 0 |
| 1992 | 11 | 0 |
| 1993 | 11 | 0 |
| 1994 | 10 | 0 |
| 1995 | 10 | 0 |
| 1996 | 16 | 0 |
| 1997 | 13 | 0 |
| 1998 | 41 | 0 |
| 1999 | 42 | 0 |
| 2000 | 38 | 0 |
| 2001 | 56 | 14 |
| 2002 | 47 | 39 |
| 2003 | 47 | 45 |
| 2004 | 48 | 40 |
| 2005 | 23 | 45 |
| 2006 | 51 | 23 |
| 2007 | 52 | 24 |
| 2008 | 30 | 32 |
| 2009 | 27 | 47 |
| 2010 | 40 | 34 |
| 2011 | 21 | 18 |
| 2012 | 42 | 15 |
| 2013 | 33 | 36 |
| 2014 | 29 | 31 |
| 2015 | 50 | 47 |
| 2016 | 65 | 54 |
| 2017 | 62 | 59 |
| 2018 | 59 | 53 |
| 2019 | 79 | 76 |
| 2020 | 70 | 60 |
| 2021 | 81 | 78 |
| 2022 | 76 | 81 |
| 2023 | 76 | 69 |
| 2024 | 67 | 39 |
| 2025 | 45 | 59 |
| 2026 | 37 | 36 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Phase management circuit for high-speed ADC receivers and methods thereof6 Oct 2026US 12,756,603 B2Samsung Electronics Co., Ltd.
- Semiconductor device using multi-level signaling and coding method thereof22 Sep 2026US 12,744,620 B2Samsung Electronics Co., Ltd.
- Receiver receiving data signal of multi-level and electronic system including the same22 Sep 2026US 12,744,692 B2Samsung Electronics Co., Ltd.
- Transceiver circuit15 Sep 2026US 12,739,156 B2NXP USA, Inc.
- Apparatuses and methods for encoding and decoding of signal lines for multi-level communication architectures8 Sep 2026US 12,730,562 B2
- Transmitter and receiver for transmitting and receiving multi-level signal and system including the same1 Oct 2026US 2026/0303304 A1Seoul National University R&Db Foundation
- Systems and Methods for Communicating using Time Shift Signaling1 Oct 2026US 2026/0303418 A1TeraSignal LLC
- Frequency domain correlation information signaling for transmission layers of a precoded channel24 Sep 2026US 2026/0292799 A1QUALCOMM Incorporated
- Linear modulator for signaling at thz frequencies17 Sep 2026US 2026/0280948 A1Attotude, Inc.
- Method for selecting symbols and data communication system using the selected symbols27 Aug 2026US 2026/0254683 A1Leading Ui Co., Ltd.
Most cited
By later US patents
- Serial communication protocol for medical device579US 9,226,766 B2Ethicon Endo-Surgery, Inc. · 2016
- Multimode digital modem240US 6,055,268 ATexas Instruments Incorporated · 2000
- Method for interoperability of a T1E1.4 compliant ADSL modem and a simpler modem238US 6,044,107 ATexas Instruments Incorporated · 2000
- Multimode digital modem231US 6,002,722 ATexas Instruments Incorporated · 1999
- Hybrid wireless wire-line network integration and management215US 6,021,158 ATexas Instruments Incorporated · 2000