G01V 3/104
Using several coupled or uncoupled coils
Official title: {using several coupled or uncoupled coils (G01V3/101 takes precedence)}
G01V3/104 (Using several coupled or uncoupled coils) appears on 665 US grants and 520 published applications in this corpus.
Search patents in G01V- Granted patents
- 665
- Published applications
- 520
- Assignees
- 354
- Inventors
- 1,050
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 9 | 0 |
| 1978 | 12 | 0 |
| 1979 | 5 | 0 |
| 1980 | 3 | 0 |
| 1981 | 11 | 0 |
| 1982 | 9 | 0 |
| 1983 | 2 | 0 |
| 1984 | 8 | 0 |
| 1985 | 5 | 0 |
| 1986 | 7 | 0 |
| 1987 | 7 | 0 |
| 1988 | 4 | 0 |
| 1989 | 11 | 0 |
| 1990 | 13 | 0 |
| 1991 | 10 | 0 |
| 1992 | 4 | 0 |
| 1993 | 4 | 0 |
| 1994 | 7 | 0 |
| 1995 | 11 | 0 |
| 1996 | 13 | 0 |
| 1997 | 14 | 0 |
| 1998 | 6 | 0 |
| 1999 | 11 | 0 |
| 2000 | 8 | 0 |
| 2001 | 11 | 0 |
| 2002 | 13 | 10 |
| 2003 | 13 | 21 |
| 2004 | 10 | 16 |
| 2005 | 10 | 10 |
| 2006 | 16 | 12 |
| 2007 | 10 | 12 |
| 2008 | 7 | 20 |
| 2009 | 8 | 18 |
| 2010 | 20 | 12 |
| 2011 | 13 | 17 |
| 2012 | 16 | 13 |
| 2013 | 8 | 22 |
| 2014 | 12 | 25 |
| 2015 | 15 | 33 |
| 2016 | 23 | 29 |
| 2017 | 26 | 29 |
| 2018 | 30 | 28 |
| 2019 | 32 | 26 |
| 2020 | 35 | 35 |
| 2021 | 34 | 33 |
| 2022 | 24 | 22 |
| 2023 | 25 | 22 |
| 2024 | 21 | 24 |
| 2025 | 23 | 17 |
| 2026 | 12 | 14 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Sensor device having first induction coil set and second induction coil set for determining position change of metal item29 Sep 2026US 12,748,234 B2Getac Technology Corporation
- Metal detection system for use with medical waste container8 Sep 2026US 12,727,959 B2Stryker Corporation
- Apparent resistivity measuring system and method using semi-airborne electromagnetic method8 Sep 2026US 12,730,243 B2Institute of Geology and Geophysics, Chinese Academy of Sciences
- Metal detector25 Aug 2026US 12,717,057 B2Tarsacci LLC
- Audio rendering of an electromagnetic metal detection signal4 Aug 2026US 12,699,201 B2Sarl Xplorer
- Constant current metal detector with driven transmit coil24 Sep 2026US 2026/0287779 A1Minelab Electronics Pty Limited
- Eddy current tip timing sensor used for blade-tip deicing23 Jul 2026US 2026/0208866 A1Rtx Corporation
- Portable Metal Detector Comprising A Helical Winding23 Jul 2026US 2026/0211146 A1Costruzioni Elettroniche Industriali Automatismi S .p.A. C.E.I.A. S.P.A.
- Concealed metal detection system23 Apr 2026US 2026/0112255 A1Safe Space Ventures LLC
- Sensor element9 Apr 2026US 2026/0098747 A1Balluff GmbH
Most cited
By later US patents
- Tracking system to follow the position and orientation of a device with radiofrequency field gradients749US 5,211,165 AGeneral Electric Company · 1993
- Medical instrument location means591US 5,099,845 AMicronix Pty Ltd. · 1992
- Catheter locating device540US 4,173,228 AApplied Medical Devices, Inc. · 1979
- Catheter depth, position and orientation location system506US 5,425,367 ANavion Biomedical Corporation · 1995
- Method of and apparatus for determining very accurately the position of a device inside biological tissue496US 4,431,005 AMcCormick Laboratories, Inc. · 1984