H04Q 2011/0058
Crossbar
Official title: {Crossbar; Matrix}
H04Q2011/0058 (Crossbar) appears on 247 US grants and 232 published applications in this corpus.
Search patents in H04Q- Granted patents
- 247
- Published applications
- 232
- Assignees
- 126
- Inventors
- 481
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 6 | 0 |
| 2001 | 9 | 3 |
| 2002 | 13 | 23 |
| 2003 | 15 | 11 |
| 2004 | 13 | 8 |
| 2005 | 11 | 9 |
| 2006 | 7 | 5 |
| 2007 | 4 | 2 |
| 2008 | 1 | 3 |
| 2009 | 5 | 3 |
| 2010 | 2 | 4 |
| 2011 | 1 | 5 |
| 2012 | 3 | 3 |
| 2013 | 5 | 2 |
| 2014 | 3 | 9 |
| 2015 | 10 | 7 |
| 2016 | 6 | 19 |
| 2017 | 25 | 21 |
| 2018 | 11 | 12 |
| 2019 | 19 | 17 |
| 2020 | 18 | 27 |
| 2021 | 24 | 12 |
| 2022 | 11 | 8 |
| 2023 | 4 | 9 |
| 2024 | 8 | 4 |
| 2025 | 4 | 2 |
| 2026 | 2 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Wavelength cross connect device, and wavelength cross connect method25 Aug 2026US 12,720,239 B2NTT, Inc.
- Automated physical network systems based on robotic control and management of fiber optic interconnects30 Jun 2026US 12,671,920 B2Telescent Inc.
- Optical transmission system and optical matrix7 Oct 2025US 12,439,186 B2Acon Optics Communications Inc.
- Low-power integrated beam steering switch matrix platform19 Aug 2025US 12,395,767 B2The Trustees of Columbia University in the City of New York
- Variable tilt equalization device and variable tilt equalization method8 Jul 2025US 12,356,125 B2NEC Corporation
- Switching systems configured to receive optical and electrical modules30 Jul 2026US 2026/0222713 A1Eridu Al Corporation
- Distributed reconfigurable switching node for multiple core fiber30 Apr 2026US 2026/0122380 A1Subcom, LLC
- Automatic topology discovery for optical cross connect19 Feb 2026US 2026/0052329 A1Cisco Technology, Inc.
- Machine-learning based approach for robust configuration of optically interconnected data centers5 Feb 2026US 2026/0039981 A1Nokia Solutions and Networks Oy
- Submarine branching unit2 Oct 2025US 2025/0310668 A1NEC Corporation
Most cited
By later US patents
- Method and apparatus for isolating faults in a switching matrix249US 6,856,600 B1Cisco Technology, Inc. · 2005
- Method of providing network services161US 6,912,221 B1Cisco Technology, Inc. · 2005
- Method for allocating bandwidth in an optical network79US 6,631,134 B1Cisco Technology, Inc. · 2003
- Wavelength-division multiplexed M×N×M cross-connect switch using active microring resonators72US 6,195,187 B1The United States of America as represented by the Secretary of the Air Force · 2001
- Opto-electronic distributed crossbar switch70US 6,597,824 B2Raytheon Company · 2003