G01M 11/3118
Using coded light-pulse sequences
Official title: {using coded light-pulse sequences}
G01M11/3118 (Using coded light-pulse sequences) appears on 72 US grants and 69 published applications in this corpus.
Search patents in G01M- Granted patents
- 72
- Published applications
- 69
- Assignees
- 56
- Inventors
- 193
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 3 | 3 |
| 2007 | 2 | 0 |
| 2008 | 0 | 3 |
| 2009 | 0 | 2 |
| 2010 | 0 | 1 |
| 2011 | 2 | 2 |
| 2012 | 1 | 0 |
| 2013 | 5 | 5 |
| 2014 | 1 | 8 |
| 2015 | 8 | 3 |
| 2016 | 5 | 1 |
| 2017 | 2 | 4 |
| 2018 | 4 | 4 |
| 2019 | 3 | 7 |
| 2020 | 5 | 0 |
| 2021 | 2 | 6 |
| 2022 | 7 | 3 |
| 2023 | 2 | 7 |
| 2024 | 5 | 1 |
| 2025 | 0 | 4 |
| 2026 | 2 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method and apparatus for performing optical time domain reflectometry on an optical fibre21 Jul 2026US 12,687,457 B2Telefonaktiebolaget LM Ericsson (publ)
- Optical measurement system12 May 2026US 12,624,971 B2Sintela Limited
- Estimating nonlinear phase shift in a multi-span fiber-optic link using a coherent receiver30 Apr 2024US 11,971,323 B2Ciena Corporation
- Apparatuses and methods for optical code-delay reflectometry (OcoDR)2 Apr 2024US 11,949,458 B2Sequent Logic, LLC
- Automatic optical time-domain reflectometer (OTDR)-based testing of device under test5 Mar 2024US 11,923,894 B2Viavi Solutions Inc.
- Optical fiber group delay characteristics test equipment and methods3 Sep 2026US 2026/0259106 A1NTT, Inc.
- Line monitoring system having frequency modulation for noise reduction19 Feb 2026US 2026/0049896 A1Subcom, LLC
- Optical measurement system8 Jan 2026US 2026/0009659 A1Sintela Limited
- Correction technique for coded sequence otdr1 Jan 2026US 2026/0002836 A1EXFO Inc.
- Bidirectional Optical Time Domain Reflectometer using a single wavelength22 May 2025US 2025/0167884 A1Ciena Corporation
Most cited
By later US patents
- Coherent reflectometric fiber Bragg grating sensor array100US 6,285,806 B1The United States of America as represented by the Secretary of the Navy · 2001
- Fault location in optical communication systems61US 6,075,628 ANortel Networks Limited · 2000
- Natural fiber span reflectometer providing a virtual signal sensing array capability43US 7,030,971 B1The United States of America as represented by the Secretary of the Navy · 2006
- Method for identifying an optical fiber using a pattern of reflected light42US 5,506,674 ANippon Telegraph and Telephone Corporation · 1996
- Optical waveguide having diffraction grating area and method of fabricating the same39US 5,671,308 ANippon Telegraph and Telephone Corporation · 1997