H04L 27/04
Modulator circuits
Official title: Modulator circuits; Transmitter circuits
H04L27/04 (Modulator circuits) appears on 839 US grants and 855 published applications in this corpus.
Search patents in H04L- Granted patents
- 839
- Published applications
- 855
- Assignees
- 324
- Inventors
- 1,360
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 8 | 0 |
| 1999 | 7 | 0 |
| 2000 | 2 | 0 |
| 2001 | 6 | 1 |
| 2002 | 0 | 7 |
| 2003 | 9 | 3 |
| 2004 | 12 | 22 |
| 2005 | 8 | 12 |
| 2006 | 10 | 15 |
| 2007 | 14 | 26 |
| 2008 | 10 | 21 |
| 2009 | 13 | 31 |
| 2010 | 14 | 24 |
| 2011 | 20 | 15 |
| 2012 | 23 | 18 |
| 2013 | 44 | 28 |
| 2014 | 44 | 45 |
| 2015 | 47 | 61 |
| 2016 | 50 | 45 |
| 2017 | 59 | 49 |
| 2018 | 47 | 54 |
| 2019 | 71 | 60 |
| 2020 | 55 | 71 |
| 2021 | 44 | 48 |
| 2022 | 53 | 47 |
| 2023 | 54 | 41 |
| 2024 | 53 | 26 |
| 2025 | 25 | 46 |
| 2026 | 15 | 39 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method and transmitter for transmitting data using constellation15 Sep 2026US 12,739,056 B2Mitsubishi Electric Corporation
- Pairing modulation8 Sep 2026US 12,732,403 B2Vestel Elektronik Sanayi Ve Ticaret A.S.
- Methods and apparatus to structure envelope detector circuitry for on-off keying modulation11 Aug 2026US 12,706,789 B2Texas Instruments Incorporated
- System and method for improved amplitude shift keying (ASK) communication in wireless power transfer applications4 Aug 2026US 12,700,883 B2STMicroelectronics International N. V.
- Dual-mode transmitter for low-power double-data rate (LPDDR)interface4 Aug 2026US 12,700,984 B2Foundation for Research and Business, Seoul National University of Science and Technology
- Methods for cyclic prefix handling for low-power receivers8 Oct 2026US 2026/0312858 A1
- Energy efficient ook based synchronization signal8 Oct 2026US 2026/0313568 A1
- Non-orthogonal multiplexing of low-power signals and non-low-power signals1 Oct 2026US 2026/0303272 A1QUALCOMM Incorporated
- Extended symbol decoding1 Oct 2026US 2026/0303419 A1Microchip Technology Incorporated
- Ambient power synchronization field1 Oct 2026US 2026/0303420 A1QUALCOMM Incorporated
Most cited
By later US patents
- Serial communication protocol for medical device579US 9,226,766 B2Ethicon Endo-Surgery, Inc. · 2016
- VSB reception system with enhanced signal detection for processing supplemental data202US 6,760,077 B2LG Electronics Inc. · 2004
- Waveform adaptive ultra-wideband transmitter175US 6,026,125 AMultispectral Solutions, Inc. · 2000
- Communication system166US 6,049,651 AMatsushita Electric Industrial Co., Ltd. · 2000
- Method for energy distribution in a surgical modular energy system160US 11,628,006 B2Cilag GmbH International · 2023