H04B 10/548
Phase or frequency modulation
H04B10/548 (Phase or frequency modulation) appears on 1,156 US grants and 1,245 published applications in this corpus.
Search patents in H04B- Granted patents
- 1,156
- Published applications
- 1,245
- Assignees
- 370
- Inventors
- 1,938
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 3 | 0 |
| 1992 | 0 | 0 |
| 1993 | 4 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 6 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 1 |
| 2002 | 6 | 5 |
| 2003 | 9 | 14 |
| 2004 | 7 | 13 |
| 2005 | 2 | 23 |
| 2006 | 8 | 20 |
| 2007 | 11 | 31 |
| 2008 | 25 | 31 |
| 2009 | 19 | 45 |
| 2010 | 25 | 44 |
| 2011 | 31 | 42 |
| 2012 | 43 | 54 |
| 2013 | 33 | 44 |
| 2014 | 66 | 56 |
| 2015 | 61 | 85 |
| 2016 | 66 | 85 |
| 2017 | 89 | 83 |
| 2018 | 89 | 71 |
| 2019 | 112 | 87 |
| 2020 | 91 | 88 |
| 2021 | 77 | 79 |
| 2022 | 83 | 73 |
| 2023 | 67 | 50 |
| 2024 | 55 | 55 |
| 2025 | 37 | 35 |
| 2026 | 19 | 31 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Joint classical and quantum optical communications22 Sep 2026US 12,744,603 B2Institut Mines-Telecom
- Signal processing apparatus, optical transmitting apparatus, optical receiving apparatus, optical transmission system, and signal processing method25 Aug 2026US 12,719,583 B2NEC Corporation
- Transmitting device and method for transmitting a broadband optical transmission signal30 Jun 2026US 12,671,501 B2Rheinisch-Westfalische Technische Hochschule Aachen (Rwth) Aachen
- Systems and methods for in-phase and quadrature modulation16 Jun 2026US 12,659,044 B2Huawei Technologies Co., Ltd.
- To network synchronization16 Jun 2026US 12,659,046 B2British Telecommunications Public Ltd.Co.
- Optical transmission device, optical transmission system, optical module, and optical controller1 Oct 2026US 2026/0303220 A11FINITY Inc.
- Optical transmitter with quad-wire differential optical modulator and driver1 Oct 2026US 2026/0303221 A1Ciena Corporation
- Optical transmitter and optical transceiver24 Sep 2026US 2026/0291616 A1NEC Corporation
- Communication method and device17 Sep 2026US 2026/0280720 A1Huawei Technologies Co., Ltd.
- Communication method, communication apparatus and communication system10 Sep 2026US 2026/0269949 A1NTT, Inc.
Most cited
By later US patents
- RF processing system and method153US 10,630,391 B1MagiQ Technologies, Inc. · 2020
- Optical transmission apparatuses, methods, and systems122US 7,826,752 B1Level 3 Communications, LLC · 2010
- Method and means for transmitting large dynamic analog signals in optical fiber systems108US 5,042,086 ADylor Corporation · 1991
- Optical I-Q-modulator105US 8,295,710 B2Nokia Siemens Networks Oy · 2012
- Method and device for generating optical signals95US 8,831,440 B2Huawei Technologies Co., Ltd. · 2014