G01M 11/338
By measuring dispersion other than pmd
Official title: {by measuring dispersion other than PMD, e.g. chromatic dispersion}
G01M11/338 (By measuring dispersion other than pmd) appears on 132 US grants and 128 published applications in this corpus.
Search patents in G01M- Granted patents
- 132
- Published applications
- 128
- Assignees
- 81
- Inventors
- 291
- Latest grant
- 7 Jul 2026
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| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
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| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
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| 1988 | 1 | 0 |
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| 1997 | 1 | 0 |
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| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 2 |
| 2002 | 5 | 11 |
| 2003 | 6 | 15 |
| 2004 | 12 | 10 |
| 2005 | 7 | 5 |
| 2006 | 12 | 6 |
| 2007 | 2 | 3 |
| 2008 | 3 | 1 |
| 2009 | 1 | 3 |
| 2010 | 3 | 7 |
| 2011 | 3 | 4 |
| 2012 | 4 | 3 |
| 2013 | 8 | 5 |
| 2014 | 5 | 7 |
| 2015 | 3 | 2 |
| 2016 | 3 | 1 |
| 2017 | 4 | 7 |
| 2018 | 5 | 4 |
| 2019 | 7 | 5 |
| 2020 | 2 | 5 |
| 2021 | 3 | 1 |
| 2022 | 4 | 1 |
| 2023 | 2 | 8 |
| 2024 | 2 | 7 |
| 2025 | 4 | 4 |
| 2026 | 4 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Dispersion measuring device, and dispersion measuring method7 Jul 2026US 12,674,720 B2Hamamatsu Photonics K.K.
- Dispersion measurement device and dispersion measurement method16 Jun 2026US 12,656,218 B2Hamamatsu Photonics K.K.
- Method of selecting optimized multimode optical fibers21 Apr 2026US 12,607,538 B2Corning Incorporated
- Dispersion measurement device and method based on franson second-order quantum interference technology6 Jan 2026US 12,516,988 B2National Time Service Center, Chinese Academy of Sciences
- Dispersion measurement device and dispersion measurement method23 Dec 2025US 12,504,348 B2Hamamatsu Photonics K.K.
- Apparatus for generating group velocity dispersion and quantum communication system using the same5 Mar 2026US 2026/0063508 A1Postech Research and Business Development Foundation
- Chromatic dispersion measurement8 May 2025US 2025/0146904 A1EXFO Inc.
- Estimation method, measurement method, and information processing device24 Apr 2025US 2025/0130137 A1Fujikura Ltd.
- Dispersion measurement device and method based on franson second-order quantum interference technology30 Jan 2025US 2025/0035490 A1National Time Service Center, Chinese Academy of Sciences
- Methods for Estimating Modal Bandwidth Spectral Dependence2 Jan 2025US 2025/0007605 A1Panduit Corp.
Most cited
By later US patents
- Optical characteristic measuring apparatus, the method thereof and recording medium57US 6,678,041 B2Advantest Corporation · 2004
- Method and apparatus for measuring chromatic dispersion coefficient48US 4,710,022 AFujitsu Limited · 1987
- Optical supervisory channel apparatus and method for measuring optical properties42US 6,765,659 B1Ciena Corporation · 2004
- Multimode optical fibers34US 7,995,888 B2Draka Comteq B.V. · 2011
- Method and apparatus for chromatic dispersion measurements32US 5,406,368 AKokusai Denshin Denwa Kabushiki Kaisha · 1995