G01R 15/245
Using magneto-optical modulators
Official title: {using magneto-optical modulators, e.g. based on the Faraday or Cotton-Mouton effect}
G01R15/245 (Using magneto-optical modulators) appears on 252 US grants and 167 published applications in this corpus.
Search patents in G01R- Granted patents
- 252
- Published applications
- 167
- Assignees
- 141
- Inventors
- 447
- Latest grant
- 15 Sep 2026
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| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 5 | 0 |
| 1986 | 7 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 5 | 0 |
| 1990 | 5 | 0 |
| 1991 | 4 | 0 |
| 1992 | 6 | 0 |
| 1993 | 6 | 0 |
| 1994 | 4 | 0 |
| 1995 | 10 | 0 |
| 1996 | 7 | 0 |
| 1997 | 4 | 0 |
| 1998 | 8 | 0 |
| 1999 | 9 | 0 |
| 2000 | 8 | 0 |
| 2001 | 6 | 1 |
| 2002 | 4 | 9 |
| 2003 | 10 | 3 |
| 2004 | 4 | 2 |
| 2005 | 1 | 5 |
| 2006 | 4 | 3 |
| 2007 | 2 | 2 |
| 2008 | 3 | 4 |
| 2009 | 3 | 7 |
| 2010 | 5 | 7 |
| 2011 | 3 | 15 |
| 2012 | 3 | 9 |
| 2013 | 7 | 7 |
| 2014 | 10 | 6 |
| 2015 | 7 | 8 |
| 2016 | 9 | 10 |
| 2017 | 9 | 9 |
| 2018 | 4 | 8 |
| 2019 | 15 | 4 |
| 2020 | 4 | 7 |
| 2021 | 12 | 7 |
| 2022 | 3 | 5 |
| 2023 | 8 | 7 |
| 2024 | 5 | 7 |
| 2025 | 4 | 9 |
| 2026 | 5 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Integrated optical system-based optical current sensor system15 Sep 2026US 12,736,564 B2Optonics Co., Ltd.
- Fiber optic current sensor controller25 Aug 2026US 12,716,919 B2OpticAmpere LLC
- CMOS integration of a high bandwidth optically isolated current sensor21 Jul 2026US 12,689,283 B2STMicroelectronics International N. V.
- Sensor with a light guide connection7 Jul 2026US 12,674,824 B2
- Magneto-optical sensor for monitoring of a semiconductor element in a semiconductor module3 Feb 2026US 12,540,954 B2Siemens Aktiengesellschaft
- Fiber Optic Current Sensor Module for Switchgear Metering and Field-Testing Applications9 Jul 2026US 2026/0194561 A1OpticAmpere LLC
- Measuring an Electrical Current Using Two Optical Current Transformers28 May 2026US 2026/0147022 A1HSP Hochspannungsgeräte GmbH
- Optical fiber break detection method and apparatus, relay protection apparatus, and storage medium5 Mar 2026US 2026/0063507 A1Siemens Aktiengesellschaft
- Electronic Subassembly5 Mar 2026US 2026/0063702 A1Siemens Aktiengesellschaft
- Electronic Subassembly5 Mar 2026US 2026/0066613 A1Siemens Aktiengesellschaft
Most cited
By later US patents
- Method for remotely detecting an electric field using a liquid crystal device154US 4,818,072 ARaychem Corporation · 1989
- Methods and apparatus for optically measuring polarization rotation of optical wavefronts using rare earth iron garnets78US 6,534,977 B12003
- Magneto-optic current sensor62US 4,947,107 ASundstrand Corporation · 1990
- Method and apparatus for optically measuring a current47US 4,564,754 AHitachi, Ltd. · 1986
- Drift compensation technique for a magneto-optic current sensor44US 4,683,421 AWestinghouse Electric Corp. · 1987