H04Q 2011/0026
Using free space propagation
Official title: {using free space propagation (e.g. lenses, mirrors)}
H04Q2011/0026 (Using free space propagation) appears on 589 US grants and 492 published applications in this corpus.
Search patents in H04Q- Granted patents
- 589
- Published applications
- 492
- Assignees
- 240
- Inventors
- 1,049
- Latest grant
- 14 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 5 | 0 |
| 1996 | 5 | 0 |
| 1997 | 8 | 0 |
| 1998 | 7 | 0 |
| 1999 | 18 | 0 |
| 2000 | 20 | 0 |
| 2001 | 29 | 8 |
| 2002 | 41 | 76 |
| 2003 | 53 | 50 |
| 2004 | 43 | 39 |
| 2005 | 43 | 27 |
| 2006 | 31 | 20 |
| 2007 | 27 | 17 |
| 2008 | 16 | 16 |
| 2009 | 16 | 9 |
| 2010 | 10 | 10 |
| 2011 | 10 | 3 |
| 2012 | 7 | 5 |
| 2013 | 2 | 11 |
| 2014 | 14 | 13 |
| 2015 | 12 | 28 |
| 2016 | 25 | 25 |
| 2017 | 19 | 17 |
| 2018 | 24 | 17 |
| 2019 | 16 | 9 |
| 2020 | 21 | 23 |
| 2021 | 19 | 16 |
| 2022 | 8 | 15 |
| 2023 | 11 | 8 |
| 2024 | 15 | 11 |
| 2025 | 10 | 14 |
| 2026 | 2 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Optical node device employing independently operable elements14 Apr 2026US 12,601,953 B2JVCKENWOOD Corporation
- Wavelength selective switch, optical switching device, and system6 Jan 2026US 12,520,066 B2Huawei Technologies Co., Ltd.
- Optical routing device for ultra-flexible and ultra-reliable laser beam based wireless communication18 Nov 2025US 12,477,256 B2Wireless Photonics LLC
- Tunable optical add/drop multiplexer14 Oct 2025US 12,445,221 B2Huawei Technologies Co., Ltd.
- Efficiently interconnecting computing nodes to enable use of high-radix network switches8 Jul 2025US 12,356,126 B2Microsoft Technology Licensing, LLC
- A system for directing incident light onto spatial light modulator planes30 Jul 2026US 2026/0219457 A1Huber+Suhner Polatis Limited
- Optical switch30 Jul 2026US 2026/0222714 A1Huber+Suhner Polatis Limited
- Manufacturable High Port Count Optical Cross Connect12 Mar 2026US 2026/0072218 A1Ciena Corporation
- Machine-learning based approach for robust configuration of optically interconnected data centers5 Feb 2026US 2026/0039981 A1Nokia Solutions and Networks Oy
- Artificial intelligence computing system and method1 Jan 2026US 2026/0006355 A1Huawei Technologies Co., Ltd.
Most cited
By later US patents
- Multi-wavelength cross-connect optical switch282US 6,097,859 AThe Regents of the University of California · 2000
- Wavelength-selective optical add/drop using tilting micro-mirrors256US 5,960,133 ATellium, Inc. · 1999
- Fiber-optic free-space micromachined matrix switches155US 5,960,132 AAT&T Corp. · 1999
- Optical cross-connect switch with integrated optical signal tap128US 6,668,108 B1Calient Networks, Inc. · 2003
- Modular all-optical cross-connect126US 6,614,953 B2Photuris, Inc. · 2003