G01R 33/032
Using magneto-optic devices
Official title: using magneto-optic devices, e.g. Faraday {or Cotton-Mouton effect}
G01R33/032 (Using magneto-optic devices) appears on 728 US grants and 670 published applications in this corpus.
Search patents in G01R- Granted patents
- 728
- Published applications
- 670
- Assignees
- 395
- Inventors
- 1,490
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 6 | 0 |
| 1985 | 8 | 0 |
| 1986 | 15 | 0 |
| 1987 | 14 | 0 |
| 1988 | 4 | 0 |
| 1989 | 10 | 0 |
| 1990 | 8 | 0 |
| 1991 | 7 | 0 |
| 1992 | 7 | 0 |
| 1993 | 10 | 0 |
| 1994 | 6 | 0 |
| 1995 | 14 | 0 |
| 1996 | 14 | 0 |
| 1997 | 9 | 0 |
| 1998 | 10 | 0 |
| 1999 | 9 | 0 |
| 2000 | 8 | 0 |
| 2001 | 12 | 1 |
| 2002 | 11 | 3 |
| 2003 | 6 | 4 |
| 2004 | 2 | 5 |
| 2005 | 1 | 5 |
| 2006 | 6 | 7 |
| 2007 | 5 | 2 |
| 2008 | 3 | 4 |
| 2009 | 3 | 10 |
| 2010 | 5 | 14 |
| 2011 | 5 | 15 |
| 2012 | 15 | 16 |
| 2013 | 10 | 13 |
| 2014 | 11 | 17 |
| 2015 | 14 | 23 |
| 2016 | 24 | 29 |
| 2017 | 30 | 66 |
| 2018 | 35 | 43 |
| 2019 | 47 | 33 |
| 2020 | 36 | 59 |
| 2021 | 55 | 64 |
| 2022 | 49 | 53 |
| 2023 | 48 | 50 |
| 2024 | 41 | 51 |
| 2025 | 50 | 47 |
| 2026 | 33 | 36 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Diamond magneto-optical sensor29 Sep 2026US 12,748,165 B2Sumitomo Electric Industries, Ltd.
- Techniques for atomic magnetometers and atomic magnetic gradiometers22 Sep 2026US 12,742,835 B2Honeywell Aerospace US LLC
- Optically pumped magnetometer and magnetoencephalograph22 Sep 2026US 12,742,838 B2Hamamatsu Photonics K.K.
- Ring resonator magnetometer with absorbent material8 Sep 2026US 12,730,162 B2Honeywell Aerospace US LLC
- Solid-state spin sensor with a compliant head1 Sep 2026US 12,724,091 B2EuQlid, Inc.
- Systems and methods for fabrication of a part with an embedded quantum sensor8 Oct 2026US 2026/0309812 A1Toyota Jidosha Kabushiki Kaisha
- Function estimation protocols with photonic sensors8 Oct 2026US 2026/0309813 A1
- Pcsel magnetometer8 Oct 2026US 2026/0309814 A1II-Vi Delaware, Inc.
- Signal Processing Methods and Systems for Biomagnetic Field Imaging1 Oct 2026US 2026/0294306 A1SB Technology, Inc.
- Measurement system1 Oct 2026US 2026/0298986 A1Seikoh Giken Co., Ltd.
Most cited
By later US patents
- Optical magnetic field sensor employing differently sized transmission lines132US 5,635,830 AMatsushita Electric Industrial Co., Ltd. · 1997
- Integrated optical devices utilizing magnetostrictively, electrostrictively or photostrictively induced stress129US 5,502,781 AAT&T Corp. · 1996
- Magnetometer126US 5,189,368 ALockheed Sanders, Inc. · 1993
- Atomic magnetometer and method of sensing magnetic fields122US 8,334,690 B2The United States of America as represented by the Secretary of Commerce, The National Institute of Standards and Technology · 2012
- Electronic spin based enhancement of magnetometer sensitivity99US 8,547,090 B2President and Fellows of Harvard College · 2013