G01N 27/904
With two or more sensors
Official title: with two or more sensors
G01N27/904 (With two or more sensors) appears on 247 US grants and 229 published applications in this corpus.
Search patents in G01N- Granted patents
- 247
- Published applications
- 229
- Assignees
- 187
- Inventors
- 628
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 4 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 4 | 0 |
| 1988 | 3 | 0 |
| 1989 | 5 | 0 |
| 1990 | 2 | 0 |
| 1991 | 6 | 0 |
| 1992 | 5 | 0 |
| 1993 | 7 | 0 |
| 1994 | 2 | 0 |
| 1995 | 5 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 5 | 0 |
| 2002 | 3 | 3 |
| 2003 | 3 | 5 |
| 2004 | 6 | 5 |
| 2005 | 3 | 5 |
| 2006 | 8 | 7 |
| 2007 | 5 | 7 |
| 2008 | 2 | 3 |
| 2009 | 6 | 3 |
| 2010 | 1 | 7 |
| 2011 | 4 | 7 |
| 2012 | 4 | 7 |
| 2013 | 4 | 3 |
| 2014 | 5 | 7 |
| 2015 | 5 | 6 |
| 2016 | 4 | 15 |
| 2017 | 6 | 10 |
| 2018 | 13 | 11 |
| 2019 | 11 | 15 |
| 2020 | 13 | 16 |
| 2021 | 9 | 14 |
| 2022 | 18 | 15 |
| 2023 | 11 | 9 |
| 2024 | 12 | 14 |
| 2025 | 14 | 21 |
| 2026 | 6 | 14 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method and tool for inspecting the condition of the internal surface of pipes6 Oct 2026US 12,753,874 B2Petroleo Brasileiro S.A. - Petrobras
- C-scan data merging6 Oct 2026US 12,754,168 B2Evident Canada, Inc.
- Method for non-destructive testing of regions of interest of a metal piece during additive manufacturing22 Sep 2026US 12,741,320 B2Amiquam SA
- Tool and system for eddy current inspection28 Jul 2026US 12,693,265 B2Airbus Operations S.L.U.
- Complex part inspection with eddy current sensors12 May 2026US 12,625,110 B2JENTEK Sensors, Inc.
- Array probe jig8 Oct 2026US 2026/0309673 A1Mitsubishi Heavy Industries, Ltd.
- Composite detection apparatus and method of pulsed eddy current and magnetic flux leakage in oil and gas pipeline24 Sep 2026US 2026/0287125 A1China Special Equipment Inspection & Research Institute
- Row-column addressed 2d eddy current array17 Sep 2026US 2026/0276590 A1Evident Canada, Inc.
- Eddy current devices and methods for fuel channel inspection17 Sep 2026US 2026/0276591 A1Ontario Power Generation Inc.
- Matrix capture approach for eddy current (ec) inspection17 Sep 2026US 2026/0276592 A1Evident Canada, Inc.
Most cited
By later US patents
- Eddy current probe having body of high permeability supporting drive coil and plural sensors116US 5,399,968 ANorthrop Grumman Corporation · 1995
- Omnidirectional eddy current probe and inspection system101US 7,015,690 B2General Electric Company · 2006
- Method and apparatus for a multi-channel multi-frequency data acquisition system for nondestructive eddy current inspection testing88US 5,182,513 AGeneral Electric Company · 1993
- Apparatus for near surface nondestructive eddy current scanning of a conductive part using a multi-layer eddy current probe array87US 5,262,722 AGeneral Electric Company · 1993
- Eddy current method and apparatus for inspecting ferromagnetic tubular members83US 4,292,589 ASchlumberger Technology Corporation · 1981