H04B 10/504
Using direct modulation
Official title: {using direct modulation}
H04B10/504 (Using direct modulation) appears on 659 US grants and 542 published applications in this corpus.
Search patents in H04B- Granted patents
- 659
- Published applications
- 542
- Assignees
- 281
- Inventors
- 1,286
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 4 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 4 | 0 |
| 1984 | 3 | 0 |
| 1985 | 4 | 0 |
| 1986 | 3 | 0 |
| 1987 | 6 | 0 |
| 1988 | 3 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 13 | 0 |
| 1992 | 5 | 0 |
| 1993 | 12 | 0 |
| 1994 | 22 | 0 |
| 1995 | 11 | 0 |
| 1996 | 9 | 0 |
| 1997 | 8 | 0 |
| 1998 | 12 | 0 |
| 1999 | 10 | 0 |
| 2000 | 11 | 0 |
| 2001 | 15 | 5 |
| 2002 | 13 | 29 |
| 2003 | 25 | 33 |
| 2004 | 29 | 39 |
| 2005 | 19 | 29 |
| 2006 | 29 | 17 |
| 2007 | 10 | 15 |
| 2008 | 14 | 30 |
| 2009 | 26 | 19 |
| 2010 | 20 | 16 |
| 2011 | 21 | 4 |
| 2012 | 11 | 18 |
| 2013 | 9 | 12 |
| 2014 | 18 | 12 |
| 2015 | 11 | 16 |
| 2016 | 20 | 16 |
| 2017 | 14 | 18 |
| 2018 | 16 | 25 |
| 2019 | 24 | 25 |
| 2020 | 31 | 39 |
| 2021 | 26 | 31 |
| 2022 | 30 | 24 |
| 2023 | 28 | 24 |
| 2024 | 17 | 13 |
| 2025 | 16 | 22 |
| 2026 | 10 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Ridge waveguide laser with dielectric current confinement29 Sep 2026US 12,749,872 B2Applied Optoelectronics, Inc.
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- Bi-directional and multi-channel optical module with single cavity accommodating both optical transmitter and receiver assemblies11 Aug 2026US 12,706,676 B2Global Technology Inc.
- Optical communication system with a simplified remote optical power supply4 Aug 2026US 12,700,926 B2Ayar Labs, Inc.
- Communications Circuitry with Injection Locking Mode Control25 Jun 2026US 2026/0180686 A1Apple Inc.
- Optical Communication System with a Simplified Remote Optical Power Supply28 May 2026US 2026/0149504 A1Ayar Labs, Inc.
- Optical link with vcsel wavelength modulation30 Apr 2026US 2026/0121377 A1Volantis Semiconductor, Inc.
- Optical links with degree of freedom vcsel modulation on a photonic wafer-scale interposer30 Apr 2026US 2026/0121378 A1Volantis Semiconductor, Inc.
- Reduction of waveguide crosstalk with sub-wavelength structures30 Apr 2026US 2026/0121757 A1Volantis Semiconductor, Inc.
Most cited
By later US patents
- Method and apparatus for transmitting broadband amplitude modulated radio frequency signals over optical links204US 5,191,459 AScientific-Atlanta, Inc. · 1993
- Synchronous quantized subcarrier multiplexer for digital transport of video, voice and data158US 4,999,831 AUnited Telecommunications, Inc. · 1991
- Chirped-pulse multiple wavelength telecommunications system147US 5,631,758 ALucent Technologies Inc. · 1997
- Optical networking unit employing optimized optical packaging138US 6,652,158 B2Optical Zonu Corporation · 2003
- Device and method to control the output power of laser diodes137US 5,383,208 AFrance Telecom · 1995