H04L 27/12
Modulator circuits
Official title: Modulator circuits; Transmitter circuits
H04L27/12 (Modulator circuits) appears on 880 US grants and 730 published applications in this corpus.
Search patents in H04L- Granted patents
- 880
- Published applications
- 730
- Assignees
- 371
- Inventors
- 1,253
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 5 | 0 |
| 1983 | 5 | 0 |
| 1984 | 3 | 0 |
| 1985 | 7 | 0 |
| 1986 | 6 | 0 |
| 1987 | 6 | 0 |
| 1988 | 3 | 0 |
| 1989 | 3 | 0 |
| 1990 | 0 | 0 |
| 1991 | 7 | 0 |
| 1992 | 7 | 0 |
| 1993 | 8 | 0 |
| 1994 | 11 | 0 |
| 1995 | 9 | 0 |
| 1996 | 14 | 0 |
| 1997 | 12 | 0 |
| 1998 | 16 | 0 |
| 1999 | 13 | 0 |
| 2000 | 4 | 0 |
| 2001 | 9 | 2 |
| 2002 | 8 | 6 |
| 2003 | 6 | 7 |
| 2004 | 6 | 37 |
| 2005 | 4 | 20 |
| 2006 | 11 | 13 |
| 2007 | 8 | 15 |
| 2008 | 15 | 21 |
| 2009 | 17 | 26 |
| 2010 | 30 | 24 |
| 2011 | 32 | 21 |
| 2012 | 20 | 23 |
| 2013 | 20 | 28 |
| 2014 | 28 | 46 |
| 2015 | 55 | 57 |
| 2016 | 68 | 56 |
| 2017 | 59 | 58 |
| 2018 | 66 | 49 |
| 2019 | 53 | 47 |
| 2020 | 49 | 30 |
| 2021 | 42 | 21 |
| 2022 | 26 | 26 |
| 2023 | 32 | 18 |
| 2024 | 26 | 23 |
| 2025 | 15 | 37 |
| 2026 | 18 | 19 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Modulation signal processing apparatus and method, and microcontroller unit and electronic device6 Oct 2026US 12,756,605 B2Zhejiang Geoforcechip Technology Co., Ltd.
- Transceiver device and method thereof6 Oct 2026US 12,756,606 B2Realtek Semiconductor Corp.
- Method and system for a repeater network that utilizes distributed transceivers with array processing29 Sep 2026US 12,750,171 B2Peltbeam Inc.
- Method and system for a repeater network that utilizes distributed transceivers with array processing25 Aug 2026US 12,719,627 B2Peltbeam Inc.
- Method and device for fast FSK communication in wireless power transmission system18 Aug 2026US 12,712,399 B2LG Electronics Inc.
- Voltage switching in a power management integrated circuit1 Oct 2026US 2026/0303421 A1Qorvo US, Inc.
- Transmitter for operation with restricted power consumption10 Sep 2026US 2026/0269835 A1Telefonaktiebolaget LM Ericsson (publ)
- Overlaid frequency-domain reflection modulation20 Aug 2026US 2026/0246672 A1QUALCOMM Incorporated
- Device to reader frequency multiplexing with manchester encoding6 Aug 2026US 2026/0231126 A1InterDigital Patent Holdings, Inc.
- Reflection modulation via subcarrier indices30 Jul 2026US 2026/0223129 A1QUALCOMM Incorporated
Most cited
By later US patents
- Hierarchical data collection network supporting packetized voice communications among wireless terminals and telephones789US 5,726,984 ANorand Corporation · 1998
- Hierarchical data collection network supporting packetized voice communications among wireless terminals and telephones346US 6,389,010 B1Intermec IP Corp. · 2002
- Digital compensation for wideband modulation of a phase locked loop frequency synthesizer313US 6,008,703 AMassachusetts Institute of Technology · 1999
- Hand-held terminal with display screens, interactive screens, magnetic credit card readers, scanners, printers and handlers301US 5,679,943 ANorand Corporation · 1997
- Hierarchical communication system providing intelligent data, program and processing migration265US 5,790,536 ANorand Corporation · 1998