G02F 2201/20
Delay line
Official title: delay line
G02F2201/20 (Delay line) appears on 124 US grants and 117 published applications in this corpus.
Search patents in G02F- Granted patents
- 124
- Published applications
- 117
- Assignees
- 93
- Inventors
- 212
- Latest grant
- 4 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1992 | 1 | 0 |
| 1993 | 4 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 5 |
| 2003 | 15 | 28 |
| 2004 | 10 | 2 |
| 2005 | 11 | 7 |
| 2006 | 3 | 2 |
| 2007 | 1 | 2 |
| 2008 | 2 | 3 |
| 2009 | 4 | 7 |
| 2010 | 5 | 6 |
| 2011 | 3 | 4 |
| 2012 | 3 | 6 |
| 2013 | 6 | 0 |
| 2014 | 4 | 4 |
| 2015 | 11 | 4 |
| 2016 | 1 | 3 |
| 2017 | 3 | 2 |
| 2018 | 3 | 8 |
| 2019 | 6 | 1 |
| 2020 | 2 | 2 |
| 2021 | 1 | 3 |
| 2022 | 2 | 3 |
| 2023 | 2 | 7 |
| 2024 | 5 | 3 |
| 2025 | 5 | 4 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Multi-mode multi-pass delay4 Nov 2025US 12,461,310 B1Psiquantum, Corp.
- Optical arbitrary pulse pattern generator21 Oct 2025US 12,449,707 B2Teknologian tutkimuskeskus VTT Oy
- Light source9 Sep 2025US 12,411,387 B2Nkt Photonics A/S
- Light source5 Aug 2025US 12,379,641 B2Nkt Photonics A/S
- Cryogenic waveform source22 Apr 2025US 12,283,995 B2Teknologian tutkimuskeskus VTT Oy
- Optical devices and methods of manufacture27 Aug 2026US 2026/0251922 A1Taiwan Semiconductor Manufacturing Company.Ltd
- Modulators based on cascaded mach-zehnder interferometers23 Oct 2025US 2025/0328055 A1GLOBALFOUNDRIES U. S. Inc.
- Optical short pulse generator, optical short pulse generation method, and program16 Oct 2025US 2025/0321460 A1Nippon Telegraph and Telephone Corporation
- Light source6 Mar 2025US 2025/0076729 A1Nkt Photonics A/S
- Light source9 Jan 2025US 2025/0013120 A1Nkt Photonics A/S
Most cited
By later US patents
- Optical modulator for an optical transmitter84US 5,359,449 AFujitsu Limited · 1994
- Microwave adaptive transversal filter employing variable photonic delay lines81US 5,220,163 AThe United States of America as represented by the Secretary of the Air Force · 1993
- Photonic bandgap apparatus and method for delaying photonic signals74US 5,751,466 AUniversity of Alabama at Huntsville · 1998
- Optical coupler having evanescent coupling region70US 6,944,369 B2SiOptical, Inc. · 2005
- Semiconductive guided-wave programmable optical delay lines using electrooptic fabry-perot elements65US 5,140,651 AThe United States of America as represented by the Secretary of the Air Force · 1992