H04L 27/28
With simultaneous transmission of different frequencies each representing one code element
Official title: with simultaneous transmission of different frequencies each representing one code element
H04L27/28 (With simultaneous transmission of different frequencies each representing one code element) appears on 167 US grants and 171 published applications in this corpus.
Search patents in H04L- Granted patents
- 167
- Published applications
- 171
- Assignees
- 86
- Inventors
- 291
- Latest grant
- 28 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 1 |
| 2003 | 1 | 7 |
| 2004 | 1 | 8 |
| 2005 | 2 | 3 |
| 2006 | 2 | 2 |
| 2007 | 5 | 6 |
| 2008 | 6 | 5 |
| 2009 | 4 | 4 |
| 2010 | 4 | 11 |
| 2011 | 5 | 17 |
| 2012 | 12 | 12 |
| 2013 | 15 | 7 |
| 2014 | 13 | 14 |
| 2015 | 19 | 8 |
| 2016 | 10 | 9 |
| 2017 | 11 | 10 |
| 2018 | 9 | 10 |
| 2019 | 12 | 7 |
| 2020 | 5 | 9 |
| 2021 | 6 | 3 |
| 2022 | 2 | 5 |
| 2023 | 6 | 4 |
| 2024 | 4 | 3 |
| 2025 | 3 | 4 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for modulation using index of low-power frequency points, transmitter, and receiver thereof28 Oct 2025US 12,457,136 B2Xiamen Zifisense InfoTech Co., Ltd.
- Signal modulating method, signal demodulating method, device, storage medium and program product23 Sep 2025US 12,425,286 B2Huawei Technologies Co., Ltd.
- Multi-user duplicate transmission28 Jan 2025US 12,212,448 B2QUALCOMM Incorporated
- Communication apparatus and communication method for measuring a channel quality indicator (CQI)31 Dec 2024US 12,185,150 B2Sun Patent Trust
- Dual carrier index modulation (DC-IM)10 Dec 2024US 12,166,621 B2Koc University
- Communication method and apparatus3 Sep 2026US 2026/0261366 A1Huawei Technologies Co., Ltd.
- Overlaid frequency-domain reflection modulation20 Aug 2026US 2026/0246672 A1QUALCOMM Incorporated
- Communication apparatus and communication method for dual stream dual carrier modulation18 Dec 2025US 2025/0385819 A1Panasonic Intellectual Property Corporation of America
- Coordinate Interleaved Power Index Modulation29 May 2025US 2025/0175376 A1Koc University
- Multi-user duplicate transmission29 May 2025US 2025/0175377 A1QUALCOMM Incorporated
Most cited
By later US patents
- Orthogonal vector DSL79US 8,279,745 B2Telefonaktiebolaget'l M Ericsson (Publ) · 2012
- Method and apparatus for data transfer using a time division multiple frequency scheme supplemented with polarity modulation47US 7,321,601 B2General Atomics · 2008
- Tunable oscillator31US 6,781,470 B2General Atomics · 2004
- Method and apparatus for automatic gain control of a multi-carrier signal in a communication receiver31US 7,995,684 B2QUALCOMM Incorporated · 2011
- Harmonic transmission of data31US 8,675,779 B2Landis+Gyr Technologies, LLC · 2014